2017 ANNUAL DRINKING WATER QUALITY REPORT

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5 2017 ANNUAL DRINKING WATER QUALITY REPORT ENGINEERING & PUBLIC WORKS Prepared June 4, 2018 File #: /000/ Doc #: v1

6 TABLE OF CONTENTS PAGE NO. Contents EXECUTIVE SUMMARY... 4 Message from the Medical Health Officer... 4 Emergency Response Plan... 4 INTRODUCTION... 5 SOURCE WATER TESTING... 5 DISTRIBUTION TESTING... 6 Sampling Stations... 6 Figure 1: Sampling Station Locations... 7 Table 1: Sampling Stations... 8 Sampling Frequency... 9 Table 2: Scheduled s by Month Test Parameters... 9 Regulations/Standards Distribution Testing...10 Table 3: Chemical and Physical Properties to be Monitored MONITORING RESULTS Table 4: Weekly Microbiological Testing Results E. Coli Figure 2: Sampling Stations Indicating Positive for Chlorine Residuals...14 Table 5: 2017 Chlorine Residuals Figure 3: Chlorine Residuals Disinfection Byproducts...17 Table 6: Metro Vancouver HAA Test Results Table 7: Metro Vancouver THM Test Results Metals Testing...20 Table 8: Metals Testing Results Table 9: Metals Standards, Canadian Safe Drinking Water Guideline Vinyl Chloride...21 Table 10: Vinyl Chloride Results ph...22 Table 11: ph Results CUSTOMER COMPLAINTS SYSTEM IMPROVEMENTS SYSTEM MAINTENANCE File #: /000/ Doc #: v1 2

7 APPENDICES I II lii Heath Link BC Bulletin #56 Drinking Water & Weakened Immune Systems 2017 GVWD Quality Control Annual Report Executive Summary Monitoring Results from Coquitlam Stations 3 File #: /000/ Doc #: v1

8 2017 Annual Drinking Water Quality Report EXECUTIVE SUMMARY Under the Drinking Water Protection Act and Drinking Water Protection Regulation the City is required to continually monitor water quality and make available to the public a report summarizing the results of the monitoring program. This report summarizes the results of drinking water quality monitoring in Coquitlam in the year The microbial quality of water distributed in 2017 was in full compliance with all regulations. Six water samples tested positive for non-fecal bacteria but were under the frequency and concentration parameters. The City has come in under all of the maximum concentrations of disinfection bi-products (DBPs), metals, and vinyl chlorides as recommended by The Guidelines for Canadian Drinking Water Quality. The City recorded 28 water quality complaints in The majority of these were due to turbidity caused by normal operation & maintenance activities and usually cleared up within 2 hours of the initial call. Message from the Medical Health Officer Water from taps that is not used for several hours is good for washing or watering plants, but not for drinking or cooking as it may contain elevated levels of lead or copper. Run the water for at least one minute or until the water is cold before using it for drinking or cooking. For the same reason, never use water from hot taps for drinking or cooking. While the message from the Medical Health Officer is good precautionary advice, it has more prominence in older communities that had widespread use of lead pipe & solder in their plumbing systems. Metro Vancouver also maintains water ph above 6.5 to control corrosion, which reduces the leaching of lead and copper into the water supply. Emergency Response Plan The City water utility is included in the Public Works Response Plan and Division Operation Centre Guidelines, The plan can be viewed on the City s website; 4

9 2017 Annual Drinking Water Quality Report INTRODUCTION Water suppliers in the Province of British Columbia are regulated by the Drinking Water Protection Act and the Drinking Water Protection Regulation. The Act and Regulation establishes the roles and responsibilities of water suppliers and the Ministry of Health with regard to establishing, operating and monitoring a water distribution system to ensure the protection of the public from water borne health hazards. Section 8 of the regulation stipulates that a supplier must collect and test samples from the supply and distribution system as directed by a drinking water officer. In July 1998 the Lower Mainland Medical Health Officers issued the Water Quality Monitoring Protocol outlining the Health Officer s requirements for water purveyors in the greater Vancouver area. Most of the municipalities in the region, including the City of Coquitlam, do not have their own sources, but purchase treated water from the Greater Vancouver Water District (Metro Vancouver). To coordinate the efforts of the various municipalities with regard to distribution system testing, and to spell out their own responsibilities with regard to source water testing, Metro Vancouver, in consultation with the Regional Health Officers prepared the Water Quality Monitoring and Reporting Plan for the GVRD and Member Municipalities. The Drinking Water Protection Act requires that the results of a supplier s water quality monitoring program be reported publicly. Section 11 of the regulation stipulates that a report must be published within 6 months of the end of each calendar year. This report will fulfill this requirement. SOURCE WATER TESTING All water distributed by the City s water utility is purchased from Metro Vancouver. Water is supplied to the City from one of two regional sources. About half of the water consumed in the City originates in Seymour Lake the other half in Coquitlam Lake. Both sources are surface sources. As of January 2010, the Seymour Lake has been filtered and disinfected by the use of ultra violet light. Coquitlam Lake is an un-filtered source with ozone and ultra violet light used as the primary disinfectant. The ph of the water at both Seymour and Coquitlam Lake is also adjusted to make the water less acidic as a corrosion control measure. Both sources use chlorine as a secondary disinfectant. Despite the efforts of Metro Vancouver and the City of Coquitlam to provide disinfected drinking water, individuals with weakened immune systems are advised to read the Health Link BC Bulletin attached in Appendix l. Quality of pre and post treated source water is monitored by Metro Vancouver in keeping with their water quality monitoring and reporting plan. The results of Metro Vancouver s monitoring for 2017 can be found in their publication The Greater Vancouver Water District Quality Control Annual Report The results of Metro Vancouver s source water sampling and testing are summarized in Appendix li of this report. File #: /000/ Doc #: v1 5

10 2017 Annual Drinking Water Quality Report DISTRIBUTION TESTING To satisfy the requirements of the Drinking Water Protection Regulation and ultimately safe guard public health, the City must continuously test water quality throughout the system as stipulated in Metro Vancouver s water quality monitoring and reporting plan. Metro Vancouver collects and analyzes samples as a service to the City. Metro Vancouver s Laboratory is a member of the Canadian Association of Analytical Laboratories and is accredited by the Standards Council of Canada. The Provincial Health Officer also approves the Lab for the analysis of drinking water samples. All weekly test results are forwarded to both the City and the Fraser Health Authority directly by the Lab in accordance with the monitoring plan. If a sample shows evidence of fecal contamination, the Lab makes telephone contact immediately with both the City and the Health Region in keeping with the requirements of Section 9 of the Drinking Water Protection Regulation. Sampling Stations There are 32 dedicated sampling stations distributed throughout the City. The station locations were chosen in consultation with the Fraser Health Authority and Metro Vancouver to provide a representative sample of the quality throughout the entire distribution system. Figure 1 shows the geographic location of the sampling stations. Table 1 lists the sampling stations, their regional source and the relative flow rate at each location. File #: /000/ Doc #: v1 6

11 2017 Annual Drinking Water Quality Report Figure 1: Sampling Station Locations 7

12 2017 Annual Drinking Water Quality Report Table 1: Sampling Stations Station Location Pressure Regional Flow Main Zone Supply Rate Dia COQ-531 Clearw ater Way at Riverview Park Field House Foster Seymour/Coquitlam Dead End 150 COQ-532 Mallard Court in island in cul de sac Noons Creek Coquitlam Dead End 100 COQ-533 Ivy Avenue by Roy Stibbs School Burnaby Mtn. Seymour Low 150 COQ-534 Brookmere east of Whiting By Coquitlam College Seymour Seymour Low 150 COQ-535 Joyce Street By Lord Baden Pow ell School Foster Seymour/Coquitlam Low 150 COQ-536 Mundy Street By Cape Horn Elementary School Foster Seymour/Coquitlam Low 200 COQ-537 Balfour By RC MacDonald School Burnaby Mtn. Seymour/Coquitlam Low 150 COQ-538 Baker Drive By Baker Drive School Burnaby Mtn. Seymour/Coquitlam Low 150 COQ-539 Lansdow ne Drive South of Aberdeen Tow n Center Coquitlam Medium 150 COQ-540 Eagle Ridge Reservoir Compound Eagleridge Coquitlam Medium 250 COQ-541 North end of Fresno (betw een 720 and 721 Fresno) Burnaby Mtn. Seymour Dead End 150 COQ Orkeny Burnaby Mtn. Seymour/Coquitlam Dead End 150 COQ-543 Across from 1150 How es PL Foster Seymour/Coquitlam Dead End 150 COQ-544 Betw een 720 and721 Pembrook Seymour Seymour Dead End 150 COQ-545 Blue Jay north of Finch east side Scott Creek Coquitlam Dead End 200 COQ-546 Mackin Park in Compound by Field House Brunette Coquitlam Low 150 COQ-547 Harper Reservoir Compound Harper Coquitlam Medium 300 COQ-548 Rochester School, on Schoolhouse Foster Seymour/Coquitlam Medium 200 COQ-549 Scott Creek Reservoir in pump compound Scott Creek Coquitlam Medium 350 COQ-600 Victoria Drive at Leigh Elementary School Coquitlam Coquitlam Low 150 COQ-601 Betw een 2089 And 2085 Concord Brunette Coquitlam Dead End 150 COQ Glenbrook East side of street Harper Coquitlam Low 150 COQ-604 East end of Baycrest North of Hyd N-067 Coquitlam Coquitlam Low 150 COQ-605 Hoy Creek Pump Station Whitebark Pl. Hoy Creek Coquitlam Medium 400 COQ-606 Irvine and Reese Coquitlam Coquitlam Medium 200 COQ-607 Noons Creek Pump Station Noons Creek Coquitlam Low 300 COQ-608 Mountain Reservoir (Parkw ay Boulevard) Mountain Coquitlam Low 300 COQ-610 West end of Thompson Burnaby Mtn. Seymour Dead End 150 COQ-611 Rogers at Leeder Brunette Coquitlam Medium 200 COQ-612 Hampton Court Mountain Coquitlam Low 200 COQ-613 Summit Reservoir Access Road Summit Coquitlam Medium 300 COQ-614 Bouy Drive and Quay Place Coquitlam Coquitalm Medium 150 8

13 2017 Annual Drinking Water Quality Report The monitoring protocol recommends the following distribution of sampling sites: 10% from supply 40% Low Flow 40% Medium Flow 10% Dead End. The City s current distribution is 0%, 41%, 31% and 28% respectively. The City has a disproportionate number of dead end and low flow sites. This is due to the City s sampling points being established prior to the creation of the current protocol. Sampling Frequency Schedule B of the Drinking Water Protection Regulation requires that the City take a minimum of 90 samples per month plus 1 sample per month for every 10,000 people in excess of 90,000. Coquitlam s population in 2017 was approximately 140,000. Under the protocol a minimum of 95 samples per month were required. The City s lowest number of samples in one month was 129, thus fulfilling the protocol. Metro Vancouver collects samples from each sampling station on a weekly basis. Occasionally samples may not be collected due to malfunction of or damage to a station, or because a station could not be accessed. Table 2 summarizes the number of samples drawn each month as part of the Region s scheduled sampling program. Table 2: Scheduled s by Month 2017 Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec s Test Parameters Weekly samples collected at each sampling site are tested for the following parameters: Physical Parameters Temperature measured in degrees Celsius Free chlorine residual measured in milligrams per liter (mg/l) Turbidity measured in nephelometeric turbidity units (NTU) Bacteriological Parameters Heterotrophic Plate Count (HPC) measured in colonies per milliliter coliform measured in organisms per 100 milliliters E. coli measured in organisms per 100 milliliters The Region also samples from selected stations quarter annually for the following: Disinfection Byproducts Halo acetic acids measured in parts per billion (ppb) Trihalomethanes measured in parts per billion (ppb) File #: /000/ Doc #: v1 9

14 2017 Annual Drinking Water Quality Report And semi-annually for the following: Metals Vinyl Chloride ph Regulations/Standards Distribution Testing The Drinking Water Protection Regulation of the Drinking Water Protection Act establishes the legislated standard for the microbiological quality of water. As of April 1, 2006, the Regulation requires that samples must meet the following criteria: Parameter: Escherichia coli coliform bacteria Standard: No detectable Escherichia coli per 100 ml (a) 1 sample in a 30 day period No detectable total coliform bacteria per 100 ml (b) more than 1 sample in a 30 day period At least 90% of samples have no detectable total bacteria per 100 ml and; no sample has more than 10 total coliform bacteria per 100 ml In addition to the legislated requirements, Water Quality Monitoring Protocol also states that samples should also meet the standards for microbiology contained in the Guidelines for Canadian Drinking Water Quality published by Health Canada. With respect to the Guideline states: For distribution systems in public supplies where fewer than 10 samples are collected in a given sampling period, no sample should contain total coliform bacteria. In distribution systems where greater than 10 samples are collected in a given sampling period, no consecutive samples from the same site or not more than 10% of samples should show the presence of total coliform bacteria. Testing for total coliforms should be carried out in all drinking water systems. The number, frequency, and location of samples for total coliform testing will vary according to the type and size of the system and jurisdictional requirements. Health Canada, the World Health Organization and the US Environmental Protection Agency all now recognize that there are no negative health effects related to the presence of Heterotrophic bacteria in drinking water. The Heterotrophic Plate Count test is still conducted on samples drawn to give an indication of changes in the bacteriological environment of the water supplied. Metro Vancouver s Water Quality Monitoring and Reporting Plan requires testing for particular physical and chemical properties from the distribution system. s representative of each water source are required. Parameters to be monitored, Canadian Safe Drinking Water Guideline limits and sampling frequency are listed on Table 3 below. File #: /000/ Doc #: v1 10

15 2017 Annual Drinking Water Quality Report Table 3: Chemical and Physical Properties to be Monitored Parameter MAC mg/l AO Frequency Copper <1.0* semi-annually Halo acetic acids <0.080 quarterly Iron <0.3* semi-annually Lead <0.01 semi-annually Odor inoffensive on complaint ph semi-annually Taste Inoffensive on complaint Tri halo methane (THM) 0.1 quarterly Vinyl Chlorine semi-annually Zinc <5.0* semi-annually * - in mg/l MAC - Maximum Acceptable Concentration AO - Aesthetic Objective MONITORING RESULTS Monitoring Results for each sampling site are provided in Appendix III. The weekly results for microbiological testing are summarized on Table 4 below. Table 4: Weekly Microbiological Testing Results Week Number s Tested s >0 MF/100mLs >10 Mf/100mLs File #: /000/ Doc #: v1 s Positive for E.coli MF/100mLs 11

16 2017 Annual Drinking Water Quality Report Week Number s Tested s >0 MF/100mLs >10 Mf/100mLs s Positive for E.coli MF/100mLs % of 0.28% 0.00% 0.00% E. Coli In 2017 there were no samples drawn that tested positive for Escherichia coliform. Of the 2107 samples taken in 2017, six samples tested positive for coliforms from five stations: Coq-532, Coq-533, Coq-543, Coq-600 (twice), and Coq-612. None of these positive samples contained more than 10 coliform per 100 ml. At no time in 2017 did the number of positive samples exceed the 10% of samples in a 30 day period permitted by the Safe Drinking Water Regulation. No stations had consecutive positive coliform tests. Coquitlam was in full compliance with regulations. File #: /000/ Doc #: v1 12

17 2017 Annual Drinking Water Quality Report Figure 2: Sampling Stations Indicating Positive for 13

18 2017 Annual Drinking Water Quality Report Chlorine Residuals It is important to maintain a disinfectant residual in the distribution system in order to control the re-growth of bacteria. In the greater Vancouver region, free chlorine is used as a disinfectant. Experience has shown that where a disinfectant residual of 0.2 parts per million (milligrams per liter) is maintained, re-growth can be controlled. Table 5 reports the total number of samples collected from each sampling point, the number of samples over 0.2 ppm of free chlorine and the number of samples with less than 0.2 ppm free chlorine. 14

19 2017 Annual Drinking Water Quality Report Table 5: 2017 Chlorine Residuals Station # of s Taken CL2 Free Greater Than 0.2 (#) CL2 Free Less Than 0.2 (#) CL2 Free Greater Than 0.2 (%) CL2 Free Less Than 0.2 (%) COQ % 31.9% COQ % 92.8% COQ % 0.0% COQ % 1.6% COQ % 23.1% COQ % 6.5% COQ % 0.0% COQ % 7.7% COQ % 6.2% COQ % 17.3% COQ % 54.3% COQ % 18.3% COQ % 48.4% COQ % 6.2% COQ % 53.8% COQ % 0.0% COQ % 0.0% COQ % 19.4% COQ % 0.0% COQ % 0.0% COQ % 1.6% COQ % 0.0% COQ % 3.4% COQ % 1.6% COQ % 16.7% COQ % 3.1% COQ % 6.8% COQ % 3.1% COQ % 1.5% COQ % 69.8% COQ % 12.7% COQ % 3.2% = % 16% File #: /000/ Doc #: v1 15

20 2017 Annual Drinking Water Quality Report Figure 3: Chlorine Residuals 16

21 2017 Annual Drinking Water Quality Report Stations COQ-612, 532 & 545 all reside on Westwood Plateau in areas that see little demand for water due to their locations on dead-end watermains. This is exacerbated by these sampling stations being on the opposite side of the plateau than the reservoirs that serve them. The level of chlorination on the Plateau is also moderated as high levels of chlorine in this area of the City have contributed to the creation of disinfection biproducts in the past. Residual at station COQ-541 was below 50% of samples >0.2ppm again. This is primarily due to this sample station being on one of the longest dead-end watermains in the City. Given the length of this dead-end watermain and the minimal population it serves, it will likely stay below the recommended criteria. Residual at station COQ-543 usually straddles the 50% of samples >0.2ppm line due to its location on a long dead-end. Coquitlam 531 had 68% of its samples register greater than 0.2ppm of free chlorine as it is on a short dead-end water main. Disinfection Byproducts The use of chlorine as a disinfectant for unfiltered source water can result in the creation of two families of potentially carcinogenic compounds: Trihalomethanes (THM s) and Haloacetic acids (HAA s). The Guidelines for Canadian Drinking Water Quality state that the running annual average total THM concentration should not exceed 100 parts per billion (ppb). In addition to concentration of bromodichlorimethane should not exceed 16 ppb. The Canadian guideline for HAA s adopted in 2008 is 80 ppb. All samples tested in 2017 were within the recommended guidelines for THMs and HAAs. Staff will continue to use operational procedures such as using reduced reservoir levels in times of low water demand and suspending the operation of the Mountain rechlorination station in times of high water demand to limit the generation of HAAs. Metro Vancouver test results for disinfection byproducts are summarized on Tables 6 and Table 7. File #: /000/ Doc #: v1 17

22 2017 Annual Drinking Water Quality Report Table 6: Metro Vancouver HAA Test Results HAA (ppb) Dibromoacetic Acid Dichloroacetic Acid Monobromoacetic Acid Monochloroacetic Acid Trichloroacetic Acid Haloacetic Acid HAA Quarterly Average (Guileline Limit 80ppb/mL) Date d COQ May-16 <0.5 5 < COQ Aug-16 <0.5 <1 < <5 COQ Oct-16 <0.5 2 < COQ Mar-17 < < COQ May-17 < <1 < COQ Aug-17 <0.5 4 <1 < COQ Nov-17 <0.5 2 <1 < COQ May-16 <0.5 7 < COQ Aug-16 <0.5 7 < COQ Oct-16 < COQ Mar-17 < <1 < COQ May-17 < <1 < COQ Aug-17 <0.5 8 <1 < COQ Nov-17 < < COQ May-16 <0.5 8 < COQ Aug-16 <0.5 7 < COQ Oct-16 < < COQ Mar-17 < <1 < COQ May-17 < <1 < COQ Aug-17 <0.5 9 <1 < COQ Nov-17 < <1 < COQ Jun-16 <0.5 3 < COQ Aug-16 < < COQ Oct-16 < COQ Mar-17 < < COQ May-17 < < COQ Aug-17 < < COQ Dec <1 < File #: /000/ Doc #: v1

23 2017 Annual Drinking Water Quality Report Table 7: Metro Vancouver THM Test Results THM (ppb) Bromodichloromethan e Bromoform Chlorodibromomethan e Chloroform Trihalomethanes THM Quarterly Average (Guileline Limit 100ppb/mL) Date d COQ May-16 <1 <1 < COQ Sep-16 1 < COQ Oct-16 1 <1 < COQ Feb-17 <1 <1 < COQ May-17 1 <1 < COQ Aug-17 <1 <1 < COQ Nov-17 <1 <1 < COQ May-16 <1 <1 < COQ Aug-16 2 <1 < COQ Oct-16 1 <1 < COQ Mar-17 <1 <1 < COQ May-17 1 <1 < COQ Aug-17 <1 <1 < COQ Nov-17 <1 <1 < COQ May-16 <1 <1 < COQ Aug-16 1 <1 < COQ Oct-16 <1 <1 < COQ Mar-17 <1 <1 < COQ May-17 1 <1 < COQ Aug-17 <1 <1 < COQ Nov-17 <1 <1 < COQ May-16 <1 <1 < COQ Aug-16 1 <1 < COQ Oct-16 <1 <1 < COQ Mar-17 <1 <1 < COQ May-17 <1 <1 < COQ Aug-17 <1 <1 < COQ Nov-17 <1 <1 < COQ May-16 <1 <1 < COQ Aug-16 1 < COQ Oct-16 1 <1 < COQ Mar-17 <1 <1 < COQ May-17 <1 <1 < COQ Aug-17 <1 <1 < COQ Nov-17 <1 <1 < COQ Jun-16 <1 <1 < COQ Aug-16 2 < COQ Oct-16 2 <1 < COQ Mar-17 1 <1 < COQ May-17 1 <1 < COQ Aug-17 1 <1 < COQ Dec-17 <1 <1 < File #: /000/ Doc #: v1

24 2017 Annual Drinking Water Quality Report Metals Testing A total of ten water samples were collected from five locations and tested for the presence of metals in The results of the testing are provided in Table 8. Table 9 gives the current guidelines for metals in drinking water as established by Health Canada, the US Environmental Protection Agency and the World Health Organization. The Tables show that drinking water supplied in Coquitlam complies with all of these standards for metals. Table 8: Metals Testing Results COQ-533 COQ-536 COQ-538 COQ-541 COQ-544 Description Roy Stibbs School Fairview 2017 Cape Horn School Finnigan 2017 Baker Drive School Baker Fresno Pembroke 2017 Date 5-May 24-Oct 5-May 24-Oct 1-May 26-Oct 1-May 26-Oct 9-May 24-Oct Type GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB GRAB Aluminum µg/l Antimony µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Arsenic µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Barium µg/l Boron µg/l <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 Cadmium µg/l <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 Calcium µg/l Chromium µg/l <0.05 < < <0.05 <0.05 < <0.05 Cobalt µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Copper µg/l Iron µg/l Lead µg/l <0.5 <0.5 <0.5 < <0.5 <0.5 <0.5 <0.5 <0.5 Magnesium µg/l Manganese µg/l Mercury µg/l <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 Molybdenum µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Nickel µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Potassium µg/l Selenium µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Silver µg/l <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Sodium µg/l Zinc µg/l <3.0 <3.0 <3.0 < <3.0 < File #: /000/ Doc #: v1 20

25 2017 Annual Drinking Water Quality Report Table 9: Metals Standards, Canadian Safe Drinking Water Guideline Parameter Canadian Guideline Limit Reason Guideline Established Aluminium (µg/l) 200 aesthetic Antimony (µg/l) 6 health Arsenic (µg/l) 10 health Barium (µg/l) 1000 health Boron (µg/l) 5000 health Cadmium (µg/l) 5 health Calcium (µg/l) none Chromium (µg/l) 50 health Cobalt (µg/l) none Copper (µg/l) 1000 aesthetic Iron (µg/l) 300 aesthetic Lead (µg/l) 10 health Magnesium (µg/l) none Manganese (µg/l) 50 aesthetic Mercury (µg/l) 1.0 health Molybdenum (µg/l) none Nickel (µg/l) none Potassium (µg/l) none Selenium (µg/l) 50 health Silver (µg/l) none Sodium (µg/l) 200,000 aesthetic Zinc (µg/l) 5000 aesthetic *aesthetic standards= non health related. Vinyl Chloride A total of 6 samples were taken from sample points in the City where the distribution system is predominantly poly vinyl chloride (PVC) pipe. The guideline limit for vinyl chloride is mg/l. Vinyl chloride was not detected in significant concentrations in any of the samples taken as shown in Table 10. File #: /000/ Doc #: v1 21

26 2017 Annual Drinking Water Quality Report Table 10: Vinyl Chloride Results Station COQ-532 COQ-600 COQ-613 ph Reported Name Mallard Court Leigh Elementary School, Victoria Dr. Eagle Summit Reservoir, Gate Vinyl d date Chloride (mg/l) 16-Jun-17 < Nov-17 < Jun-17 < Nov-17 < Jun-17 < Nov-17 < ph is measured concurrently with testing for disinfection by products. Test results are provided in Table 11. Table 11: ph Results Station Location Date ph COQ Pembroke 21-Aug Nov COQ Concord 21-Aug Nov COQ-613 Eagle Summit Reservoir - Gate 23-Aug Dec CUSTOMER COMPLAINTS The City received 28 documented complaints regarding water quality in Most complaints are related to water turbidity due to flushing, valve exercising, hydrant use/maintenance, or elevated turbidity from Coquitlam Lake source. The majority of these problems are resolved by home owners running their taps for 1 to 3 hours. Other complaints are usually related to odors which may be due to elevated chlorine levels when described as a chemical odor; or, stagnant water in hot water tanks or in the service line when described as skunky or sulfurous. The City s response to complaints varies with the nature and extent of the problem. Persistent turbidity problems related to the City distribution system are usually resolved by purging turbid water from the system by flushing. The City responds to odor, taste or other customer specific complaints by conducting a site visit. Normally the problem is related to a specific issue within the business or residence. Sampling of water from the residence is done at the discretion of the attending staff member if it is suspected that the quality concern is related to the municipal supply. File #: /000/ Doc #: v1 22

27 2017 Annual Drinking Water Quality Report SYSTEM IMPROVEMENTS In 2017 the City replaced approximately $1.7 million of small and medium diameter water mains due to age and/or condition. The City continued its practice of replacing old water services in conjunction with road paving projects. Construction was started on the new Eagle Ridge pump station and will be completed in the summer of The new pump station will eliminate the old Briarcliffe pump station and Eagle Ridge reservoir. The elimination of Eagle Ridge reservoir should reduce water age and is anticipated to reduce the periodic generation of HAAs on Westwood Plateau. SYSTEM MAINTENANCE In 2017 the City continued with the uni-directional flushing program, flushing the water system in the Foster and Burnaby Mountain Zones. The City also flushed all dead end mains in Summit, Harper, and Coast Meridian Zones. The City continued with the tri-annual reservoir cleaning program in 2017; cleaning and disinfecting the Harper, Summit, Noons, and Foster Reservoirs. File #: /000/ Doc #: v1 23

28 Appendix l Health Link BC Bulletin #56: Drinking Water and Weakened Immune Systems

29 Number 56 June 2013 Preventing Water-Borne Infections For People with Weakened Immune Systems Who is at higher risk from water-borne infections? People with very weak immune systems who are at higher risk of certain water-borne diseases include those with: HIV infection who have a CD4+ count of less than 100 cells/mm 3 ; lymphoma or leukemia (hematological malignancies) who are being actively treated or have been in remission and off treatment for less than 1 year; hematopoietic stem cell transplant recipients; and people born with diseases that severely affect their immune systems. Some people with weakened immune systems, such as those with certain types of cancers or taking certain medications, may not be at higher risk of severe water-borne diseases. These people do not need to take extra precautions with their drinking water. Ask your health care provider how weak your immune system is, and whether you need to take extra precautions. How can drinking water become contaminated? Drinking water can contain different organisms, including bacteria, viruses and parasites, which can cause disease. These organisms can exist in the source water such as lake water and survive through treatment, or they can enter the water supply in the distribution system. Well water can be contaminated if the well is not built properly or if it draws on water from the surface of the ground, such as shallow wells or wells drilled in fractured rock. Surface water, such as rivers, lakes and streams, can also contain disease-causing organisms from animal feces. If you have a weak immune system, you should not drink water from surface sources or wells potentially contaminated by surface water such as dug wells, unless the water has been treated to remove or inactivate at least 99.9 per cent of parasites (protozoa), per cent of viruses and all harmful bacteria. Most community water systems in B.C. have effective treatment, such as disinfection or chlorination, against bacteria and viruses. However, in many cases, treatment may not provide a 99.9 per cent reduction in infectious parasites. Some water systems and many private supplies have no treatment at all. If the water you drink has not been disinfected, please refer to HealthLinkBC File #49b How to Disinfect Drinking Water. How can I further treat disinfected water? People with very weak immune systems need to take extra precautions with their drinking water. Boiling: If your water supply has already been disinfected, bring the water to a full boil to inactivate any Cryptosporidium parasites - a major concern for people with weakened immune systems. For more information, see HealthLinkBC File #48 Cryptosporidium Infection. If the water has not already been disinfected, bring the water to a full boil for at least 1 minute. This will kill or inactivate bacteria, viruses and parasites. At elevations over 2,000 meters (6,500 feet), boil water for at least 2 minutes to disinfect it.

30 Do not drink or use tap water to brush your teeth, rinse your mouth, mix drinks or make ice cubes without boiling it first. Please note that boiling water will get rid of viruses, bacteria and parasites but not chemicals which may be found in the water. Reverse Osmosis (RO): RO is effective against all disease-causing organisms and many chemical contaminants. Unless it has a high capacity, it will only produce small amounts of water and waste a large volume. Speak to a water treatment specialist to see if this is the best option for you. Ultraviolet (UV) Treatment: UV light will kill many disease-causing organisms, and is effective against almost all parasites. UV will not kill some bacterial spores and some viruses, so it should not be used unless the water supply is at least disinfected. UV treatment units should meet NSF Standard #55A. Filters: Filters do not remove bacteria and viruses and should not be used unless the water supply is disinfected first. If you plan to install a drinking water filter in your home, you will need a system labeled as Absolute 1 micron or smaller, and labeled as meeting ANSI/NSF International Standard #53 for removal of parasites. Jug-type filters, such as a Brita, which sit in a jug and allow water to trickle through, and some tap-mounted and built-in devices are not an appropriate solution. The jug filter models are not effective in removing many disease-causing organisms. making ice cubes and for recipes where water is used but not boiled, such as cold soups. For More Information For more information, including the level of treatment in your local water system, please contact: your drinking water purveyor or supplier; or the local environmental health officer or drinking water officer; or visit tacts.html. Please also see the following HealthLinkBC Files: #49a Water-borne Diseases in British Columbia #49b How to Disinfect Drinking Water #69b Formula Feeding Your Baby: Safely Preparing and Storing Formula. For more HealthLinkBC File topics, visit or your local public health unit. Click on or call for non-emergency health information and services in B.C. For deaf and hearing-impaired assistance, call in B.C. Translation services are available in more than 130 languages on request. Can I drink bottled water? Bottled water in B.C. may or may not have been treated. If you have a very weak immune system, check with the bottling company to find out what treatment, if any, it has had. Bottled water that has been properly treated using one of the methods list above can be used for drinking, brushing teeth,

31 Appendix ll GVWD 2017 Water Quality Annual Report Executive Summary

32 Water Greater Vancouver Water District 2017 Water Quality Annual Report Volume

33 1. EXECUTIVE SUMMARY Source Water Quality o In 2017, the turbidity levels of the delivered water met the requirements of the Guidelines for Canadian Drinking Water Quality (GCDWQ). o The Capilano supply was in service for the entire year. Heavy rainfall events in late November resulted in Capilano source water turbidity peaking at 5.1 Nephelometric Turbidity Unit (NTU). Even with the higher turbidity, the delivered filtered Capilano water was less than 0.1 NTU for the entire year. o The Seymour supply was in service for the entire year except for one week in late November, when heavy rainfall resulted in the source water turbidity peaking at over 100 NTU. The Seymour source was removed from service on November 24, 2017 and returned on December 1, The delivered filtered Seymour water was less than 0.1 NTU for the entire year. With the exception of the November and December turbidity events, source water turbidity entering the SCFP was generally less than 1 NTU. o The Coquitlam supply was in service for the entire year. The unfiltered Coquitlam source water was greater than 1 NTU for 19 days in 2017 and did not exceed 5 NTU throughout the year. o The microbiological quality of the three source waters was excellent in The levels of bacteria and protozoa detected were low and indicative of high quality source water. All three sources easily met the bacteriological requirements for avoiding filtration outlined in the turbidity section of the GCDWQ. o Results of the analyses of the source water for herbicides, pesticides, and volatile organic compounds and radionuclides were all found to be below the recommended limits for these substances as listed in the GCDWQ. Water Treatment o The Seymour Capilano Filtration Plant provided full filtration and the plant performance as measured by the quality of the delivered water, was excellent in The daily average turbidity of water leaving the clearwells to enter the GVWD transmission system was less than 0.08 NTU in o Turbidity levels for Individual Filter Effluent (IFE) met the turbidity requirements of the GCDWQ except for four minor excursions in November The four IFE turbidities were greater than 1 NTU for a combined total of 4 minutes, 50 seconds. o Filtration consistently removed iron, colour and organics from the Capilano and Seymour source water. o Levels of total aluminum in filtered water were consistently below the GCDWQ operational guideline value of 0.2 mg/l for direct filtration plants using aluminumbased coagulants. The maximum value for 2017 was 0.06 mg/l. o The secondary disinfection stations boosted chlorine as required. 7

34 Transmission/Distribution System Water Quality o Bacteriological water quality was excellent in the GVWD transmission mains. There was no E. coli detected in any of the samples collected. o Bacteriological water quality was excellent in the GVWD in-system storage reservoirs. There was no E. coli detected in any of the samples collected. o Bacteriological water quality was excellent in the distribution systems of the member jurisdictions. Of approximately 20,000 municipal samples collected for testing in 2017 a high percentage (99.8%) were free of total coliforms which was similar to 2016 (99.8%). No E. coli positive samples were detected in o The running average levels of the Trihalomethane group of chlorine disinfection by-products detected in the delivered water in the GVWD and municipal systems were well below the Maximum Acceptable Concentration (MAC) in the GCDWQ of 100µg/L (0.1 mg/l). The running average levels for the Haloacetic acid group of chlorine disinfection by-products were below the GCDWQ MAC of 80µg/L (0.08 mg/l). 8

35 Appendix lll Monitoring Results from Coquitlam Stations

36 Ecoli MF/100m Ls Ecoli MPN/10 0mLs HPC CFU/mls Temp C MF/100mLs MPN/100mLs name type reported name d date Chlorine Free mg/l Turbidity NTU COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 18-Jan <1 2 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 25-Jan <1 <2 5 <1 0.4 COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 31-Jan <1 <2 5 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 7-Feb <1 <2 4 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 9-Feb < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 16-Feb < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 23-Feb <1 <2 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 27-Feb <1 4 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 3-Mar < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 8-Mar <1 <2 5 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 10-Mar <1 <2 5 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 14-Mar <1 4 5 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 15-Mar <1 <2 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 21-Mar <1 <2 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 27-Mar <1 <2 7 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 6-Apr <1 <2 8 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 7-Apr <1 2 8 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 10-Apr <1 <2 9 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 21-Apr <1 <2 10 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 27-Apr <1 <2 12 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 3-May <1 <2 11 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 12-May <1 <2 12 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 16-May <1 <2 13 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 1-Jun <1 <2 15 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 5-Jun <1 <2 15 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 15-Jun <1 <2 14 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 21-Jun < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 28-Jun <1 <2 15 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 7-Jul < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 13-Jul < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 18-Jul <1 <2 16 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 19-Jul <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 20-Jul <1 <2 15 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 27-Jul <1 <2 16 <1 0.5 COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 2-Aug < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 4-Aug < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 9-Aug <1 <2 16 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 10-Aug < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 11-Aug <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 16-Aug <1 <2 17 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 21-Aug <1 <2 18 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 30-Aug <1 <2 17 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 1-Sep < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 6-Sep <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 13-Sep <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 16-Sep <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 20-Sep <1 <2 18 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 21-Sep <1 <2 19 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 23-Sep <1 <2 18 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 27-Sep <1 NA 18 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 28-Sep < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 29-Sep < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 5-Oct < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 13-Oct < <1 0.3 COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 20-Oct < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 26-Oct < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 30-Oct < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 3-Nov <1 <2 11 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 7-Nov <1 <2 10 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 9-Nov <1 <2 10 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 17-Nov <1 <2 10 <1 0.3 COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 23-Nov <1 <2 9 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 25-Nov < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 30-Nov < < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 7-Dec <1 2 8 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 8-Dec <1 2 8 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 15-Dec <1 <2 8 <1 0.5 COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 22-Dec <1 NA 6 < COQ-531 GRAB Riverview Park (Clearwater@ Paul Lake Crt) 29-Dec <1 NA 5 < COQ-532 GRAB Mallard Court 6-Jan <1 4 6 < COQ-532 GRAB Mallard Court 12-Jan <1 <2 6 < COQ-532 GRAB Mallard Court 18-Jan <1 <2 7 < COQ-532 GRAB Mallard Court 25-Jan <1 6 6 <1 0.44

37 Ecoli MF/100m Ls Ecoli MPN/10 0mLs HPC CFU/mls Temp C MF/100mLs MPN/100mLs name type reported name d date Chlorine Free mg/l Turbidity NTU COQ-532 GRAB Mallard Court 26-Jan <1 <2 6 <1 0.3 COQ-532 GRAB Mallard Court 31-Jan <1 <2 6 < COQ-532 GRAB Mallard Court 7-Feb <1 4 5 < COQ-532 GRAB Mallard Court 15-Feb <1 <2 5 < COQ-532 GRAB Mallard Court 16-Feb <1 <2 6 < COQ-532 GRAB Mallard Court 22-Feb <1 <2 5 < COQ-532 GRAB Mallard Court 1-Mar <1 2 6 < COQ-532 GRAB Mallard Court 8-Mar <1 <2 5 <1 0.3 COQ-532 GRAB Mallard Court 9-Mar <1 <2 5 < COQ-532 GRAB Mallard Court 14-Mar <1 <2 6 < COQ-532 GRAB Mallard Court 17-Mar <1 <2 6 < COQ-532 GRAB Mallard Court 22-Mar <1 <2 7 < COQ-532 GRAB Mallard Court 30-Mar <1 <2 8 < COQ-532 GRAB Mallard Court 31-Mar <1 2 7 < COQ-532 GRAB Mallard Court 6-Apr <1 <2 8 <1 0.3 COQ-532 GRAB Mallard Court 7-Apr <1 <2 8 < COQ-532 GRAB Mallard Court 13-Apr <1 <2 8 < COQ-532 GRAB Mallard Court 20-Apr < <1 0.5 COQ-532 GRAB Mallard Court 27-Apr < < COQ-532 GRAB Mallard Court 5-May < < COQ-532 GRAB Mallard Court 11-May < < COQ-532 GRAB Mallard Court 12-May < < COQ-532 GRAB Mallard Court 13-May <1 <2 13 < COQ-532 GRAB Mallard Court 18-May < < COQ-532 GRAB Mallard Court 25-May <1 <2 11 <1 0.3 COQ-532 GRAB Mallard Court 30-May < < COQ-532 GRAB Mallard Court 8-Jun < < COQ-532 GRAB Mallard Court 16-Jun < < COQ-532 GRAB Mallard Court 21-Jun < < COQ-532 GRAB Mallard Court 22-Jun < < COQ-532 GRAB Mallard Court 30-Jun < < COQ-532 GRAB Mallard Court 5-Jul < < COQ-532 GRAB Mallard Court 12-Jul < < COQ-532 GRAB Mallard Court 14-Jul < < COQ-532 GRAB Mallard Court 19-Jul < < COQ-532 GRAB Mallard Court 23-Jul < < COQ-532 GRAB Mallard Court 28-Jul < < COQ-532 GRAB Mallard Court 1-Aug < < COQ-532 GRAB Mallard Court 10-Aug < < COQ-532 GRAB Mallard Court 15-Aug < < COQ-532 GRAB Mallard Court 23-Aug < < COQ-532 GRAB Mallard Court 24-Aug < <1 0.5 COQ-532 GRAB Mallard Court 29-Aug < < COQ-532 GRAB Mallard Court 6-Sep < < COQ-532 GRAB Mallard Court 8-Sep < < COQ-532 GRAB Mallard Court 15-Sep < < COQ-532 GRAB Mallard Court 21-Sep < < COQ-532 GRAB Mallard Court 27-Sep <1 NA 19 < COQ-532 GRAB Mallard Court 4-Oct < <1 0.3 COQ-532 GRAB Mallard Court 12-Oct <1 <2 13 < COQ-532 GRAB Mallard Court 19-Oct < <1 0.2 COQ-532 GRAB Mallard Court 26-Oct < < COQ-532 GRAB Mallard Court 1-Nov < < COQ-532 GRAB Mallard Court 4-Nov < < COQ-532 GRAB Mallard Court 9-Nov < COQ-532 GRAB Mallard Court 11-Nov < < COQ-532 GRAB Mallard Court 12-Nov < < COQ-532 GRAB Mallard Court 17-Nov < < COQ-532 GRAB Mallard Court 18-Nov < < COQ-532 GRAB Mallard Court 24-Nov < <1 0.3 COQ-532 GRAB Mallard Court 1-Dec < < COQ-532 GRAB Mallard Court 8-Dec < < COQ-532 GRAB Mallard Court 14-Dec < < COQ-532 GRAB Mallard Court 20-Dec <1 NA 7 < COQ-532 GRAB Mallard Court 24-Dec <1 NA 6 < COQ-533 GRAB Roy Stibbs School Fairview 5-Jan <1 6 6 <1 1.2 COQ-533 GRAB Roy Stibbs School Fairview 11-Jan <1 <2 4 < COQ-533 GRAB Roy Stibbs School Fairview 20-Jan <1 <2 5 < COQ-533 GRAB Roy Stibbs School Fairview 23-Jan <1 <2 5 < COQ-533 GRAB Roy Stibbs School Fairview 31-Jan <1 <2 5 < COQ-533 GRAB Roy Stibbs School Fairview 9-Feb <1 <2 5 < COQ-533 GRAB Roy Stibbs School Fairview 16-Feb <1 <2 5 < COQ-533 GRAB Roy Stibbs School Fairview 23-Feb <1 <2 4 <1 0.15