2015 WATER QUALITY REPORT. Your Partner in Water

Transcription

1 2015 WATER QUALITY REPORT Your Partner in Water

2 SaskWater is committed to ensuring a long term, sustainable, quality water supply to our customers. TABLE OF CONTENTS 2 SaskWater s Potable Water Customers and Water Sources 4 SaskWater s Certified Operation and Maintenance Customers 5 Treatment Water Treatment Processes Surface Water Groundwater Monitoring Requirements Drinking Water Quality SaskWater Owned Water Treatment Systems Drinking Water Quality Certified Operation and Maintenance Water Treatment Systems 13 Transmission Monitoring Requirements Drinking Water Quality SaskWater Owned Water Transmission Systems Drinking Water Quality Certified Operation and Maintenance Water Transmission Systems 19 Information Key Drinking Water Parameters and Effects Explanation of Terms Emergency Boil Water Orders Precautionary Drinking Water Advisories

3 SaskWater s Potable Water Customers and Water Sources SaskWater owns and operates eight water treatment plants serving municipalities and rural pipeline groups. Each treatment plant has a different source of water as described in the following table. Our water treatment plant located in Draws water from this source And delivers potable water to these major users Melfort Codette Lake on the North Saskatchewan River Village of Beatty Star City Farming Co. Ltd. Town of Kinistino City of Melfort Town of Star City Village of Weldon Melfort Rural Pipeline Association Edenwold Local Reservoir Village of Edenwold Elbow Lake Diefenbaker Village of Elbow Line 19 Water Pipeline Utility (Loreburn, Strongfield) Gravelbourg Thomson Lake Town of Gravelbourg Thomson Lake Regional Park Authority Pierceland Local Aquifer Village of Pierceland Wakaw South Saskatchewan River Village of Annaheim Town of Bruno Town of Cudworth Hamlet of Domremy Hillcrest Farms Ltd. Hamlet of Hoey City of Humboldt Village of Lake Lenore Village of Muenster Hamlet of St. Isidore-de-Bellevue Village of St. Louis Town of Wakaw SHL Rural Pipeline Association North Central Rural Pipeline Association One Arrow First Nation White City Zehner Aquifer Town of White City Cupar Hatfield Aquifer Town of Cupar 2

4 SaskWater s Potable Water Customers and Water Sources SaskWater also owns and operates nine water transmission systems. Our transmission business buys water from the City of, the City of Regina and the Buffalo Pound Water Treatment Corporation and delivers it to customers. This transmission system Purchases water from this supplier And delivers potable water to these customers Buffalo Pound East City of Regina K+S Windsor Salt Ltd., Eastview Water Users Co-op, Village of Grand Coulee, Yara Belle Plaine Inc., Canadian Pacific Railway Buffalo Pound North Buffalo Pound Water Treatment Corporation Arm River Farming Co. Ltd., Village of Bethune, Buffalo Plains Cattle Co., Village of Disley, Dufferin Water Association, Qu Appelle Valley Water Users Association, K+S Potash Canada Inc. Buffalo Pound West Buffalo Pound Water Treatment Corporation Eight Mile Pipeline Association Inc, Village of Marquis, Marquis Rural Water Users Inc., Parklane Waterline Inc., Parkview Water Users Inc., Village of Tuxford, Tuxford Rural Water Users Inc. East City of Allan South Rural Water Utility, Town of Allan, R.M. of Blucher (Sunset Estates), Village of Bradwell, Village of Clavet, R.M. of Corman Park (Casa Rio/Wood Meadows/Grasswood), Cory Park Mobile City, Dundurn Rural Water Utility, Eighth Street Waterline Group Inc., Village of Elstow, Elstow North Rural Water Utility, English River Enterprises, Southeast Corman Park Rural Water Corp., GNC Bioferm Inc., Canlan Ice Sports Jemini, Lost River Water Co. Ltd., Potash Corporation of Sask. Inc. Allan Division, Potash Corporation of Sask. Inc. Patience Lake Division, Prairie Plant Systems Inc., East School Division #41, Stadium Sports Ltd., South Yellowhead Water Corporation, University of Saskatchewan (Goodale Farms), East Floral Industrial Park Ltd., South Floral Water Corporation, SCS Water Group Inc., Teen Challenge Canada North City of Akzo Nobel Chemicals Ltd., Richardson Milling, Murron Poultry Farms Ltd., R.M. of Corman Park (North Corman Industrial Park), Town of Dalmeny, Dalmeny West Water System Ltd., ERCO Worldwide, Town of Hague, Intervalley Water Inc., City of Martensville, Town of Osler, Ostara Holsteins Ltd., Sask Valley Rural Water Utility, Wanuskewin Heritage Park, City of Warman, Village of Hepburn West City of Burnco Rock Products Ltd., Chemtrade West Limited Partnership, Potash Corporation of Sask. Inc. Cory Division, Prairie Pride Chick Sales Ltd. Northeast City of Town of Aberdeen, Highway 41 Water Utility, University of Saskatchewan (Kernen Farm) Northwest Thatcher Avenue City of BizHub Developments Ltd, Yellowhead Industrial Park Water Corp., Brandt Tractor Properties Ltd. Northwest 33rd Street City of R.M. of Corman Park (Battleford Trail), Ministry of Government Services (Yarrow Youth Farm) 3

5 SaskWater s Certified Operation and Maintenance Customers In addition to operating our own potable water systems, SaskWater also provides certified operation and maintenance (COM) services to communities and user groups across Saskatchewan. This water treatment plant located in Is owned by Draws water from this source... And delivers potable water to these major users Cochin Interlake Regional Water Board Local Aquifer Village of Cochin, Hamlet of Days Beach, Hamlet of Trevessa Beach, Hamlet of West Chatfield, Hamlet of Summerfields Beach Meota Jackfish Lake West Water Utility Corp. Infiltration wells adjacent to the North Saskatchewan River Village of Meota, Village of Metinota, RM of Meota, Hamlet of Lakeview, Hamlet of Suttons Beach La Ronge Lac La Ronge Regional Water Corp Lac La Ronge Village of Air Ronge, Town of La Ronge, Lac La Ronge Indian Band Vanscoy Village of Vanscoy South Saskatchewan River Village of Vanscoy This distribution system Purchases water from this supplier And delivers potable water to these customers Caron/Mortlach Regional Public Utility Board SaskWater Village of Caronport, Hamlet of Caron, Village of Mortlach North Central Rural Pipeline Association SaskWater Various connections to the north and south of the Wakaw-Humboldt Regional Water Treatment Plant Regina North Industrial Subdivision City of Regina Regina North Industrial Subdivision Village of Elbow SaskWater Village of Elbow Town of Star City SaskWater Town of Star City Town of White City SaskWater Town of White City Village of Air Ronge Lac La Ronge Regional Water User Corporation Village of Air Ronge Village of Edenwold SaskWater Village of Edenwold 4

6 Treatment Water Treatment Processes Water treatment removes natural and man-made contaminants from the source water so that it is safe and pleasant to drink. The treatment process from a surface water source (like a river or lake) differs from treatment for groundwater (drawn from an aquifer). Surface Water Generally, surface water treatment involves either conventional treatment, which consists of screening to remove debris, coagulation-flocculation, clarification or sedimentation, filtration, and disinfection; or membrane treatment, which consists of screening to remove debris, reverse osmosis membrane filtration, and disinfection to remove physical, chemical, microbial and other contaminants from the water. Our treatment plants in Melfort, Wakaw, Gravelbourg, Edenwold and Elbow use these types of processes. Groundwater For groundwater, the treatment process generally consists of oxidation of iron, manganese and other minerals with aeration and/or other processes followed by detention, filtration and disinfection. Our treatment plants in Pierceland, White City and Cupar use groundwater sources with this kind of treatment process. Monitoring Requirements SaskWater undertakes water quality testing as required by The Waterworks and Sewage Works Regulations, 2015 and by operating permits for our water treatment plants and distribution systems. SaskWater monitors water quality to: assess and ensure the safety of the water for our customers assess the need for any process adjustments determine quality trends and identify potential concerns We employ more than 60 provincially certified operators who monitor and maintain the quality of water from the initial source to the final point of delivery. Our highly trained, dedicated operators, technicians, technologists and professional engineers keep abreast of technological changes, water quality, and any upgrading needs of our waterworks systems to meet ever-changing water quality standards and monitoring requirements. SaskWater also monitors most of our facilities and customer facilities remotely. We have remote monitoring equipment installed in 55 locations, which we either own or operate, allowing continuous facility surveillance. We monitor key water quality parameters, equipment operation and water levels, pressures and flows. 5

7 The following tables summarize the monitoring and testing requirements SaskWater must meet at its owned and COM treatment plants for bacteriological parameters, chlorine residuals, turbidity, chemical, and health and toxicity parameters. SaskWater Owned Water Treatment System Annual Volume in 2015 (m 3 ) Water Source Bacteriological & Chlorine Residuals Chlorine Residuals at the Treatment Plant Turbidity General Chemical Health & Toxicity Trihalomethanes Codette RWSS 986,181 Codette Lake 2 per week 1 per day Continuous 3 months year 2 every 3 months in Jan, Apr, July, Oct Cupar 38,220 Hatfield Aquifer 1 per week 1 per day 1 per day for groundwater Edenwold 16,028 Local Reservoir 1 per week 1 per day 1 per day per filter 3 months every 3 months in Jan, Apr, July, Oct Elbow 69,855 Lake Diefenbaker 1 per week 1 per day 1 per day per filter 3 months every 3 months in Jan, Apr, July, Oct Gravelbourg 139,285 Thomson Lake 1 per week 2 per day Continuous 3 months every 3 months in Jan, Apr, July, Oct Pierceland 60,277 Local Aquifer 1 per week 1 per day 1 per day for groundwater Wakaw- Humboldt RWSS 1,181,588 South Sask. River 3 per week 1 per day Continuous 3 months year 2 every 3 months in Jan, Apr, July, Oct White City 276,272 Zehner Aquifer 1 per week 1 per day 1 per day for groundwater 6

8 SaskWater Operated Water Treatment System Water Source Bacteriological & Chlorine Residuals Chlorine Residuals at the Treatment Plant Turbidity General Chemical Health & Toxicity Trihalomethanes Interlake Local Aquifer 3 per week May to Oct, 2 per month Nov to Apr 1 per day 1 per day for groundwater Jackfish Lake Infiltration wells adjacent to the North Sask. River 3 per week 2 per day 2 per day per filter 3 months every 3 months in Jan, Apr, July, Oct La Ronge Lac La Ronge 2 per week 1 per day Continuous 3 months every 3 months in Jan, Apr, July, Oct Vanscoy South Sask. River 1 per week 1 per day 1 per day per filter 3 months every 3 months in Jan, Apr, July, Oct 7

9 2015 Drinking Water Quality SaskWater Owned Water Treatment Systems Our governing standards direct us to meet or exceed the Saskatchewan Drinking Water Quality Standards for health related potable water parameters. Summary of 2015 water quality data SASKWATER OWNED WATER TREATMENT SYSTEMS Parameters Units Saskatchewan Standards & Objectives Codette RWSS Cupar Edenwold Elbow Gravelbourg Pierceland Wakaw- Humboldt RWSS White City Regulatory Aesthetic 1. BACTERIOLOGICAL 1 : Total Coliform E. Coli Background Bacteria No. of Regular Bacteriological Tests Required No. of Regular Bacteriological Tests Submitted CHLORINE RESIDUALS: From samples submitted for bacteriological analysis Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Cl 2 Tests Required No. of Cl 2 Tests Performed From water entering distribution system Free Chlorine (Cl 2) Residuals: Minimum mg/l Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l no standard Maximum mg/l Average mg/l No. of Cl 2 Tests Required No. of Cl 2 Tests Performed Continuous Continuous Continuous Continuous 730 Continuous Continuous Continuous 3. TURBIDITY: From samples submitted for bacteriological analysis Minimum NTU Maximum NTU no standard Average NTU No. of Turbidity Tests Required No. of Turbidity Tests Performed From water leaving the filter Surface Water: Minimum NTU Maximum NTU Maximum NTU Average NTU th Percentile NTU th Percentile NTU th Percentile NTU From water entering the distribution system Groundwater: Minimum NTU Maximum NTU no standard Average NTU th Percentile NTU No. of Turbidity Tests Required Continuous Continuous 365 Continuous 365 No. of Turbidity Tests Performed Continuous Continuous Continuous Continuous 5 Continuous Continuous Continuous Continuous 8

10 Summary of 2015 water quality data (continued) SASKWATER OWNED WATER TREATMENT SYSTEMS Parameters Units Saskatchewan Standards & Objectives Codette RWSS Cupar Edenwold Elbow Gravelbourg Pierceland Wakaw- Humboldt RWSS White City Regulatory Aesthetic 4. CHEMICAL HEALTH: Aluminum mg/l no standard < Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l < < Chromium mg/l < < < Copper mg/l Iron mg/l Lead mg/l 0.01 < < < Manganese mg/l 0.05 < < < Selenium mg/l < Trihalomethanes (THM) mg/l Uranium mg/l < Zinc mg/l GENERAL CHEMICAL: Alkalinity mg/l Bicarbonate mg/l no standard Calcium mg/l no standard Carbonate mg/l no standard <1 <1 <1 <1 <1 <1 Chloride mg/l Fluoride mg/l Hardness (as CaCO 3) mg/l Hydroxide mg/l no standard <1 <1 <1 <1 <1 <1 Magnesium mg/l Nitrate (as NO 3) mg/l <0.04 ph ph units Potassium mg/l no standard Sodium mg/l Specific Conductivity us/cm no standard Sulphate mg/l Sum of Ions mg/l no standard TDS mg/l CONDUCTIVITY and PH: Specific Conductivity µs/cm no standard 39 ph ph units CHEMICAL PESTICIDES: Atrazine mg/l <0.001 Bromoxynil (Buctril) mg/l < Carbofuran mg/l 0.09 < Chlorpyrifos mg/l 0.09 <0.002 Dicamba (Banvel) mg/l 0.12 < , 4-Dichlorophenoxyacetic acid 2, 4 (2, 4-D) mg/l 0.1 < Dichlorprop (2, 4-DP) mg/l no standard < Diclofop-methyl (HoeGrass) mg/l <0.003 Dimethoate mg/l 0.02 <0.001 Ethalfluralin mg/l no standard <0.001 Glyphosate mg/l 0.28 <0.01 Lindane mg/l no standard < Malathion mg/l 0.19 <0.002 MCPA mg/l <0.001 Pentachlorophenol (PCP) mg/l 0.06 <0.002 Picloram (Tordon) mg/l 0.19 <0.001 Propanil mg/l no standard < Triallate (Avadex BW) mg/l no standard <0.001 Trifluralin (Treflan) mg/l <

11 Summary of 2015 water quality data (continued) SASKWATER OWNED WATER TREATMENT SYSTEMS Parameters Units Saskatchewan Standards & Objectives Regulatory Aesthetic Codette RWSS Cupar Edenwold Elbow Gravelbourg Pierceland Wakaw- Humboldt RWSS 8. CHEMICAL ORGANICS: Benzene mg/l < Benzo(a)pyrene mg/l < Carbon tetrachloride mg/l <0.002 Dichlorobenzene 1,2 mg/l 0.2 < Dichlorobenzene 1,4 mg/l < Dichloroethane 1,2 mg/l < Dichloroethylene 1,1 mg/l < Dichloromethane mg/l 0.05 < Dichlorophenol 2,4 mg/l 0.9 <0.001 Ethylebenzene mg/l < Monochlorobenzene mg/l 0.08 < Nitrilotriacetic Acid (NTA) mg/l 0.4 Tetrachlorophenol 2,3,4,6 mg/l 0.1 <0.001 Toluene mg/l < Trichloroethylene mg/l 0.05 < Trichlorophenol 2,4,6 mg/l <0.001 Vinyl Chloride mg/l < Total Xylenes mg/l 0.3 < White City 9. CYANIDE and MERCURY: Cyanide mg/l Mercury mg/l < HALOACETIC ACIDS and RADIOLOGICAL: Haloacetic Acids 5 mg/l Gross alpha Bq/L 0.1 <0.21 Gross beta Bq/L / Notes mg/l: Milligrams per litre (equivalent to parts per million) µs/cm: Microsiemens per centimetre Bq/L: Becquerel per litre NTU: Nephelometric Turbidity Unit <: Below detection limits RWSS: Regional Water Supply System : Water Treatment Plant 95th Percentile: Turbidity levels from each filter must not exceed this limit in at least 95% of the discrete measurements made for each calendar month; or if continuous turbidity monitoring is employed, at least 95% of the time for each calendar month. to test (). Due to be sampled again in For 2014 results, please see SaskWater 2014 Water Qualitiy Report. Does not meet Water Security Agency Permit to Operate requirements. 1. Regulatory Limits Total Coliform: zero organisms detectable per 100 ml E. coli: zero organisms detectable per 100 ml Background Bacteria: less than 200 organisms per 100 ml Any organisms detected over these limits will result in one positive for that sample. 2. Chlorine residuals in the distribution system must be either 0.1 mg/l free or 0.5 mg/l total. 3. Additional testing carried out by SaskWater but not required by the permit. 4. Bacteriological sample not taken the week of May 25, Additional controls were put in place to avoid future missed samples. 5. Due to analyses malfunction, data from June 26 to June 30 is test kit data from samples taken from the treated water lab tap. 10

12 2015 Drinking Water Quality Certified Operation and Maintenance Water Treatment Systems Our governing standards direct us to meet or exceed the Saskatchewan Drinking Water Quality Standards for health related potable water parameters. CERTIFIED OPERATION AND MAINTENANCE WATER TREATMENT SYSTEMS Parameters Units Saskatchewan Standards & Objectives Halbrite Interlake Jackfish Lake La Ronge Vanscoy Regulatory Aesthetic 1. BACTERIOLOGICAL 1 : Total Coliform E. Coli Background Bacteria No. of Regular Bacteriological Tests Required No. of Regular Bacteriological Tests Submitted CHLORINE RESIDUALS: From samples submitted for bacteriological analysis Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Free Cl 2 Tests Required No. of Free Cl 2 Tests Performed From water entering distribution system Free Chlorine (Cl 2) Residuals: Minimum mg/l Minimum mg/l Minimum mg/l Maximum mg/l Average mg/l No. of Free Cl 2 Tests Required Continuous No. of Free Cl 2 Tests Performed Continuous Continuous Continuous Continuous 3. TURBIDITY: From samples submitted for bacteriological analysis Minimum NTU Maximum NTU no standard Average NTU No. of Turbidity Tests Required No. of Turbidity Tests Performed From water leaving the filter Surface Water: Minimum NTU Maximum NTU Maximum NTU Average NTU th Percentile NTU th Percentile NTU From water entering the distribution system Groundwater: Minimum NTU Maximum NTU no standard Average NTU th Percentile NTU No. of Turbidity Tests Required Continuous 365 No. of Turbidity Tests Performed Continuous Continuous Continuous 11

13 Summary of 2015 water quality data (continued) CERTIFIED OPERATION AND MAINTENANCE WATER TREATMENT SYSTEMS Parameters Units Saskatchewan Standards & Objectives Halbrite Interlake Jackfish Lake La Ronge Vanscoy Regulatory Aesthetic 4. CHEMICAL HEALTH: Aluminum mg/l no standard < Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l < < Chromium mg/l 0.05 < < < Copper mg/l Iron mg/l < Lead mg/l < < Manganese mg/l < < Selenium mg/l 0.01 < < Trihalomethanes (THM) mg/l Uranium mg/l < Zinc mg/l < HAA5 mg/l GENERAL CHEMICAL: Alkalinity mg/l Bicarbonate mg/l no standard Calcium mg/l no standard Carbonate mg/l no standard <1 <1 <1 <1 Chloride mg/l Fluoride mg/l < Hardness (as CaCO 3) mg/l Hydroxide mg/l no standard <1 <1 <1 <1 Magnesium mg/l Nitrate (as NO 3) mg/l 45 <0.04 < ph ph units Potassium mg/l no standard Sodium mg/l Specific Conductivity us/cm no standard Sulphate mg/l Sum of Ions mg/l no standard TDS mg/l CONDUCTIVITY and ph: Specific Conductivity µs/cm no standard 135 ph ph units PRESSURE DECAY TESTING: Log Removal Value Notes mg/l: Milligrams per litre (equivalent to parts per million) µs/cm: Microsiemens per centimetre NTU: Nephelometric Turbidity Unit <: Below detection limits RWSS: Regional Water Supply System : Water Treatment Plant EPO: Environmental Project Officer 95th Percentile: Turbidity levels from each filter must not exceed this limit in at least 95% of the discrete measurements made for each calendar month; or if continuous turbidity monitoring is employed, at least 95% of the time for each calendar month. to test (). Due to be sampled again in Deviation from Water Security Agency Permit to Operate requirements. 1. Regulatory Limits Total Coliform: zero organisms detectable per 100 ml E. coli: zero organisms detectable per 100 ml Background Bacteria: less than 200 organisms per 100 ml Any organisms detected over these limits will result in one positive for that sample. 2. Chlorine residuals in the distribution system must be either 0.1 mg/l free or 0.5 mg/l total. 3. Additional testing carried out by SaskWater but not required by the permit. 4. Bacteriological samples not taken the week of August 3, The EPO was notified. 5. Samples were not submitted the weeks of July 6 and July 13 due to suspension of postal service caused by forest fire. EPO was notified and two other samples were taken on July 20 and two on July 21 to confirm water quality after services resumed. 6. Low chlorine residual caused by process equipment malfunction. The EPO was notified. 7. One incidence of low chlorine residual from July 3 to July 4 following a power outage. The EPO was notified and a PDWA was issued. 8. One incidence of low chlorine residual on December 9, Field staff was on site, notified EPO and residual climbed above 0.10 mg/l within 5 minutes. 9. June 29, 2015, sample was not taken due to leak repair. 10. Aesthetic objectives are exceeded, but all regulatory requirements are met. 12

14 Transmission In addition to water treatment facilities, SaskWater also owns and provides certified operation and maintenance for potable water transmission systems. There are no treatment facilities on any of these transmission systems. Monitoring Requirements Depending on the population, each potable water transmission system must be monitored according to the Water Security Agency s (WSA) Municipal Drinking Quality Monitoring Guidelines. Permit requirements for a specific waterworks may require more sampling than outlined in WSA s guidelines. The following table summarizes the water quality monitoring and testing requirements for bacteriological, chlorine residuals, turbidity, chemical and health and toxicity parameters for each of our owned and COM facilities. SaskWater Owned Transmission System Annual Volume in 2015 (m 3 ) Water Source Bacteriological & Chlorine Residuals in Distribution System Chlorine Residuals Entering the Distribution System Turbidity General Chemical & Health & Toxicity Trihalomethanes Buffalo Pound East 74,913 City of Regina 1 per month 1 per day as per permit 3 months in Buffalo Pound North 179,798 Buffalo Pound 2 per month Continuous as per permit 3 months in Buffalo Pound West 48,714 Buffalo Pound 2 per month Continuous as per permit 3 months in East 850,965 City of 3 per week 1 per day 3 per week 3 months in North 2,796,035 City of 3 per week 1 per day 3 per week 3 months in Northeast 137,184 City of 1 per week 1 per day 1 per week 3 months in Northwest 33rd Street 13,989 City of 1 per month 1 per month 1 per month Northwest Thatcher Ave 21,301 City of 1 per week 1 per day 1 per week 3 months in West 79,786 City of 2 per week 1 per day 2 per week 3 months in 13

15 SaskWater Operated Transmission System Water Source Bacteriological & Chlorine Residuals in Distribution System Chlorine Residuals Entering the Distribution System Turbidity General Chemical & Health & Toxicity Trihalomethanes Caron/Mortlach Regional Public Utility SaskWater 1 per week Continuous 3 months in North Central Rural Pipeline Association SaskWater 4 per month 2 per day 2 every 3 months in Regina North Industrial Subdivision City of Regina 1 per week 1 per day 3 months in Village of Elbow SaskWater 1 per week 1 per week 1 per week 3 months in Town of Star City SaskWater 1 per week 1 per day Town of White City SaskWater 2 per month 1 per day 2 per month Village of Air Ronge Lac La Ronge Regional Water User Corporation 2 per week 2 per week 2 per week Village of Edenwold SaskWater 1 per month 1 per month 1 per month 3 months in 14

16 2015 Drinking Water Quality SaskWater Owned Water Transmission Systems SASKWATER OWNED WATER TRANSMISSION SYSTEMS Parameters Units Saskatchewan Standards & Objectives Buffalo Pound East Buffalo Pound North Buffalo Pound West East North Northeast Northwest 33rd Street Northwest Thatcher Ave West Regulatory Aesthetic 1. BACTERIOLOGICAL 1 : Total Coliform E. coli Background Bacteria Number of Bacteriological Tests Required Number of Bacteriological Tests Submitted CHLORINE RESIDUALS: From samples submitted for bacteriological analysis Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Free Cl 2 Tests Required No. of Free Cl 2 Tests Performed From water entering distribution system Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Free Cl 2 Tests Required 365 Continuous Continuous No. of Free Cl 2 Tests Performed Continuous Continuous Continuous Continuous Continuous Continuous 4 Continuous Continuous 9 3. TURBIDITY: From samples submitted for bacteriological analysis Minimum NTU Maximum NTU no standard Average NTU No. of Turbidity Tests Required No. of Turbidity Tests Performed

17 Summary of 2015 water quality data (continued) SASKWATER OWNED WATER TRANSMISSION SYSTEMS Parameters Units Saskatchewan Standards & Objectives Buffalo Pound East Buffalo Pound North Buffalo Pound West East North Northeast Northwest 33rd Street Northwest Thatcher Ave West Regulatory Aesthetic 4. CHEMICAL HEALTH: Trihalomethanes (THM) mg/l Sampling for parameters below this point is not required under permit. Aluminum mg/l no standard Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l < < < < < Chromium mg/l 0.05 < < < < < < < < Copper mg/l 1.0 < < < Iron mg/l 0.3 <0.1 <0.1 < Lead mg/l 0.01 < < < < < Manganese mg/l 0.05 <0.01 <0.01 < < < < Selenium mg/l 0.01 < < < Uranium mg/l Zinc mg/l GENERAL CHEMICAL: Alkalinity mg/l Bicarbonate mg/l no standard Calcium mg/l no standard Carbonate mg/l no standard <1 <1 <1 <1 <1 Chloride mg/l Fluoride mg/l Hardness (as CaCO 3) mg/l Hydroxide mg/l no standard <1 <1 <1 <1 <1 Magnesium mg/l Nitrate (as NO 3) mg/l ph ph units Potassium mg/l no standard Sodium mg/l Specific Conductivity µs/cm no standard Sulphate mg/l Sum of Ions mg/l no standard TDS mg/l Notes mg/l: Milligrams per litre (equivalent to parts per million) µs/cm: Microsiemens per centimetre NTU: Nephelometric Turbidity Unit : Water Treatment Plant <: Below detection limits Free chlorine residuals don t apply due to using chloramination. to test (). Does not meet Water Security Agency Permit to Operate requirements. 1. Regulatory Limits Total Coliform: zero organisms detectable per 100 ml E. coli: zero organisms detectable per 100 ml Background Bacteria: less than 200 organisms per 100 ml Any organisms detected over these limits will result in one positive for that sample. 2. Chlorine residuals in the distribution system must be either 0.1 mg/l free or 0.5 mg/l total. 3. Additional testing carried out by SaskWater but not required by the permit. 4. One positive Total Coliform sample on July 15, 2015; repeat was negative. 5. One low chlorine residual submitted with bacteriological sample February 18, Bacteriological result was negative. 6. Low chlorine residual for 20 minutes on October 18, Chlorine meets guidelines 99.99% of the time. 7. Low water use resulted in low chlorine level. Chorine meets guidelines 99.5% of the time. 8. Low water use resulted in low chlorine level. Chorine meets guidelines 98.9% of the time. 9. There was 1 day (August 6, 2015) without continuous readings due to analyzer malfunction. 10. High THMs in systems supplied by the Buffalo Pound due to increasing levels of dissolved organic carbon in Buffalo Pound Lake. 16

18 2015 Drinking Water Quality Certified Operation and Maintenance Water Transmission Systems CERTIFIED OPERATION AND MAINTENANCE WATER TRANSMISSION SYSTEMS Parameters Units Saskatchewan Standards & Objectives Caron / Mortlach Regional Pipeline North Central Rural Regina North Pipeline Industrial Association Subdivision Town of Elbow Town of Star City Town of White City Village of Air Ronge Village of Edenwold Regulatory Aesthetic 1. BACTERIOLOGICAL 1 : Total Coliform E. coli Background Bacteria Number of Bacteriological Tests Required Number of Bacteriological Tests Submitted CHLORINE RESIDUALS: From samples submitted for bacteriological analysis Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l Total Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Cl 2 Tests Required No. of Cl 2 Tests Performed From water entering distribution system Free Chlorine (Cl 2) Residuals: Minimum mg/l Maximum mg/l Average mg/l No. of Free Cl 2 Tests Required Continuous No. of Free Cl 2 Tests Performed Continuous Continuous 9 Continuous Continuous Continuous TURBIDITY: From samples submitted for bacteriological analysis Minimum NTU Maximum NTU no standard Average NTU No. of Turbidity Tests Required No. of Turbidity Tests Performed From water entering the distribution system Groundwater: Minimum NTU 0.00 Maximum NTU no standard 0.44 Average NTU th Percentile NTU No. of Turbidity Tests Required 365 No. of Turbidity Tests Performed Continuous 17

19 Summary of 2015 water quality data (continued) CERTIFIED OPERATION AND MAINTENANCE WATER TRANSMISSION SYSTEMS Parameters Units Saskatchewan Standards & Objectives Caron / Mortlach Regional Pipeline North Central Rural Regina North Pipeline Industrial Association Subdivision Town of Elbow Town of Star City Town of White City Village of Air Ronge Village of Edenwold Regulatory Aesthetic 4. CHEMICAL HEALTH: Trihalomethanes (THM) mg/l Haloacetic Acids 5 mg/l Sampling for parameters below this point is not required under permit. Aluminum mg/l no standard Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l < Chromium mg/l 0.05 < Copper mg/l Iron mg/l Lead mg/l 0.01 < Manganese mg/l Selenium mg/l Uranium mg/l Zinc mg/l GENERAL CHEMICAL: Alkalinity mg/l Bicarbonate mg/l no standard 170 Calcium mg/l no standard 52 Carbonate mg/l no standard <1 Chloride mg/l Fluoride mg/l Hardness (as CaCO 3) mg/l Hydroxide mg/l no standard <1 Magnesium mg/l Nitrate (as NO 3) mg/l ph ph units Potassium mg/l no standard 11 Sodium mg/l Specific Conductivity µs/cm no standard 995 Sulphate mg/l Sum of Ions mg/l no standard 707 TDS mg/l Notes mg/l: Milligrams per litre (equivalent to parts per million) µs/cm: Microsiemens per centimetre NTU: Nephelometric Turbidity Unit <: Below detection limits EPO: Environmental Project Officer : Water Treatment Plant to test (). Deviation from Water Security Agency Permit to Operate requirements. 1. Regulatory Limits Total Coliform: zero organisms detectable per 100 ml E. coli: zero organisms detectable per 100 ml Background Bacteria: less than 200 organisms per 100 ml Any organisms detected over these limits will result in one positive for that sample. 2. Chlorine residuals in the distribution system must be either 0.1 mg/l free or 0.5 mg/l total. 3. Additional testing carried out by SaskWater but not required by the permit. 4. Bacteriological samples were not submitted the weeks of July 6, July 13 because there was no postal services. EPO was informed. 5. Four low chlorine residuals submitted with bacteriological samples on January 5, 2015, October 13, 2015, October 26, 2015, November 16, 2015; all bacteriological results were negative. 6. Low water use in the system resulted in low residuals. Chlorine meets guidelines 99.9% of the time. 7. Low water use in the system resulted in low residuals. Chlorine meets guidelines 99.9% of the time. 8. Low water use in the system resulted in low residuals. Chlorine meets guidelines 99.8% of the time. 9. All chlorine data from September 11 to October 6, 2015, was lost due to technical issues. 10. High THMs in systems supplied by the Buffalo Pound due to increasing levels of dissolved organic carbon in Buffalo Pound Lake. 18

20 Information Further water quality information on potable water that we purchase is available from our suppliers: Buffalo Pound Water Treatment Corporation City of Moose Jaw City of Regina water_system/water-sewer-system/water_quality compliance_ reports/ City of and select from the available reports under Related Documents on the right. Key Drinking Water Parameters and Effects As the regulator for water quality, the Water Security Agency determines standards which are legally enforceable requirements for drinking water quality as per The Waterworks and Sewage Works Regulations, In general, standards are mandatory health parameters for systems that supply water for human consumptive use. The WSA also determines water quality aesthetic objectives which apply to certain characteristics of or substances found in water for human consumptive or hygienic use. SaskWater s governing standards for potable water quality direct us to meet or exceed the water quality parameters set by the province of Saskatchewan. Additional information on water quality, standards and aesthetic objectives can be found here: Health Canada Canadian Drinking Water Quality Guidelines guide/index-eng.php SaskH 2 O My Drinking Water WaterTrax Parameters Portal (free registration required) parameters.aspx Explanation of Terms Potable Water Treated water that is suitable for human consumption in accordance with applicable regulations. Non-Potable Water Water that is not suitable for human consumption in accordance with applicable regulations. Precautionary Drinking Water Advisory (PDWA) An advisory issued under the authority of Subsection 36(1) of The Environmental Management and Protection Act, 2010 by Water Security Agency Field Offices (WSAFO) when the WSAFO determines that there is a possibility that drinking water quality concerns exist but immediate public health threats have not been identified. As an example, it is standard protocol to issue a PDWA when a water main is depressurized to undertake repairs. Emergency Boil Water Orders There were no emergency boil water orders (EBWO) issued on any SaskWater owned or operated facilities in Precautionary Drinking Water Advisories A Precautionary Drinking Water Advisory (PDWA) is issued when drinking water quality concerns exist but immediate public health threats have not been identified. They are commonly issued as a result of power outages or maintenance that may result in depressurization of the distribution system. There were twelve (12) PDWAs issued on SaskWater owned potable water systems in 2015: Potable Water Supply System East had a PDWA on January 23 rd and May 20 th due to new water main connections that resulted in a system depressurization. Potable Water Supply System North had a PDWA on March 1 st and March 10 th due to depressurization caused by a water main repair. Potable Water Supply System West had a PDWA on November 2 nd due to depressurization caused by planned system maintenance for a new piping tie-in. Buffalo Pound Potable Water Supply System East had a PDWA on May 6 th due to a planned depressurization of the water distribution system due to necessary maintenance on the City of Regina water transmission main. 19

21 Buffalo Pound Potable Water Supply System North had a PDWA on May 6 th due to a planned system depressurization to facilitate tie-in of new water mains, on October 20 th due to a depressurization of the water distribution system, and on December 11 th due to a system-wide depressurization. Buffalo Pound Water Supply System West had a PDWA on October 20 th due to a depressurization of the water distribution system and on December 11 th due to a system wide depressurization. The Wakaw-Humboldt Regional Water Supply System had a PDWA issued March 6 th due to a depressurization caused by a water main repair. Where SaskWater provides operation and maintenance services to community or rural pipeline association-owned systems, there were thirteen (13) PDWAs issued in 2015: The Interlake Regional Water Board had three PDWAs: one on January 19 th due to a depressurization in the distribution system caused by a line break and repair, and one each on June 18 th and July 20 th due to depressurization caused by a power outage. The Village of Halbrite had a PDWA on February 5 th due to depressurization due to maintenance, and one on March 26 th due to possible reservoir contamination. The Jackfish Lake West Water Utility had PDWAs issued on January 24 th, June 17 th and July 6 th due to a depressurization caused by a power outage. The North Central Rural Pipeline Association had a PDWA March 6 th due to a depressurization caused by a water main repair on the Wakaw-Humboldt Regional Water Supply System. The Northern Village of Air Ronge had a PDWA on June 29 th due to a depressurization of the distribution system due to a water main repair, and on October 1 st, October 22 nd and October 23 rd due to depressurizations required for fire hydrant repair. There were some instances of SaskWater potable customers having PDWAs issued on their own distribution systems in Other than the instances noted above, all of these advisories were due to issues with the customers facilities and not due to the water supplied by SaskWater. There were some instances of SaskWater non-potable water customers having PDWAs issued on customer-owned treatment and distribution systems in In these instances, customers are aware that the water SaskWater supplies is non-potable, and if they wish to use non-potable water for domestic purposes, the customers are responsible for providing their own water treatment. There is an ongoing PDWA issued by the Water Security Agency in 2008 on SaskWater s Non-Potable Water Supply System East and West. This is a situation where the Water Security Agency has decided that this system falls under The Environmental Management and Protection Act, 2002 and The Waterworks and Sewage Works Regulations, This is a non-potable water supply system developed to supply industrial customers; however, household users are also supplied and the water is unsuitable for drinking unless treated. All residential users on the east system have since confirmed that the non-potable water system is no longer connected to their domestic water system. The majority of these users are now being supplied by the Dundurn Rural Water Utility. No further ongoing PDWA will be required for the east non-potable water system; however the PDWA has not yet been rescinded by the WSA. An alternative potable water source for the west system residential users has yet to be developed and water users have until December 31, 2016, to find alternate sources. 20

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