Water Quality 2016 7.1 Water Quality Objectives for EPCOR 2016 Approval EPCOR Internal EPCOR Parameter Requirement Limit Target Turbidity (NTU) Individual Filters <0.3 <0.1 (2) <0.08 Distribution System < 5 (3) < 1 (1) < 1 Distribution System (Maintenance) < 5 (3) < 3 (1) < 1 Colour (TCU) <15 (3) <10 (1) <3 pH (25°C) 6.5 - 8.5 7.3 - 8.3 (1) 7.4 - 8.0 Taste and Odour Inoffensive (3) Inoffensive (1) Inoffensive E.coli absent absent (1) absent (PA/100 mL) Total Coliforms absent absent (1) absent (PA/100 mL) Total Chlorine Residual (mg/L) Water Treatment Plant Effluent >1.0 1.3 - 2.4 (2) 1.9 - 2.2 Reservoirs >0.5 1.0 - 2.4 (1) 1.2 - 2.2 Distribution >0.5 (4) 1.0 - 2.4 (1) 1.0 - 2.2 Fluoride: (mg/L) Reservoir Effluent 0.5 - 0.9 0.6 - 0.8 (1) 0.6 - 0.8 Trihalomethanes (mg/L) Reservoir Effluent <0.100 <0.050 (1) <0.040 Distribution System <0.100 <0.050 (1) <0.040 UV254 % Transmittance E.L. Smith >89% (2) >90% Rossdale >87% (2) >88% HAA (mg/L) Reservoir Effluent < 0.080 < 0.040 (1) <0.035 Distribution System < 0.080 < 0.040 (1) <0.035 NDMA (mg/L): Reservoir Effluent < 0.000040 < 0.000010 (1) <0.000005 Distribution System < 0.000040 < 0.000010 (1) Microoganism Log Removal at Giardia ≥5.5 ≥6.0 (2) >6.5 Cryptosporidium ≥5.5 ≥5.3 (2) >6.0 Virus ≥4.0 ≥4.5 (2) >5.0 (1) Limit based on City of Edmonton Performance Based Rate (PBR) agreement (2) Limit based on EPCOR Action Level (3) Aesthetic Objective (4) in 75% of samples collected in a day All values are expressed in units of mg/L unless otherwise stated. Based on Dec 13, 2013 Summary of Epcor Edmonton Water Quality Standards. 7.2 SUMMARY OF MAJOR CHEMICALS, MICROBIOLOGICAL, AND PHYSICAL PARAMETERS OF EDMONTON DRINKING WATER PRODUCED AT THE WATER TREATMENT PLANTS 2016 Parameter Unit MAC* Average Median Min Max Count Alkalinity, total mg CaCO3/L 137 117 84 156 732 Aluminum mg/L (0.1/0.2) 0.035 0.040 0.019 0.108 24 Arsenic mg/L 0.01 <0.0002 <0.0002 <0.0002 0.0004 24 Bromate, dissolved mg/L 0.01 <0.005 <0.005 <0.005 <0.005 198 Bromodichloromethane ug/L 0.5 0.6 <0.5 2.2 731 Cadmium mg/L 0.005 <0.0001 <0.0001 <0.0001 <0.0001 24 Chlorate, dissolved mg/L 1 0.13 0.13 <0.10 0.48 198 Chloride, dissolved mg/L 6.03 5.80 3.94 11.2 198 Chlorine, total mg/L 3.0 2.16 2.02 1.54 2.41 733 Chlorite, dissolved mg/L 1 <0.005 <0.005 <0.005 0.200 198 Chromium mg/L 0.05 <0.0002 <0.0002 <0.0002 <0.0002 24 Colour TCU (15) <1 <1 <1 2 732 Conductivity uS/cm 430 399 333 544 107 Copper mg/L (1) 0.003 <0.002 <0.002 0.003 24 Cryptosporidium oocysts/100L <0.1 <0.1 <0.1 0.1 27 Fluoride, dissolved mg/L 1.5 0.69 0.69 0.58 0.80 732 Giardia cysts/100L <0.1 <0.1 <0.1 <0.1 27 Haloacetic Acids, total (HAA5) ug/L 17.2 20.4 11.1 38.0 24 Hardness, Calcium mg CaCO3/L 124 118 83 199 732 Hardness, total mg CaCO3/L 194 177 148 258 732 Iron mg/L (0.3) <0.002 <0.002 <0.002 0.002 24 Lead mg/L 0.01 <0.0001 <0.0001 <0.0001 <0.0001 24 Manganese mg/L (0.05) <0.002 <0.002 <0.002 0.005 24 Mercury mg/L 0.001 0.0001 <0.0001 <0.0001 0.0002 24 NDMA ng/L 40 <0.7 <1.6 <1.6 5.2 24 Nitrate (as N), dissolved mg/L 10 0.08 0.03 <0.01 0.21 198 Nitrite (as N), dissolved mg/L 1 <0.01 <0.01 <0.01 <0.01 198 pH N/A (6.5–10.5) 7.8 7.8 7.0 8.3 732 Potassium mg/L 0.72 0.73 0.54 1.62 24 Sodium mg/L (200) 10.0 10.5 5.7 32.8 24 Sulphate, dissolved mg/L 74 76.7 39.1 157 198 Total Dissolved Solids mg/L 236 240 205 321 24 Total Organic Carbon mg/L C 1.8 1.8 0.6 3.6 104 Trihalomethanes ug/L <100 8.9 12.1 3.0 31.4 731 Turbidity NTU 0.07 0.07 0.05 0.14 732 Uranium mg/L 0.02 <0.0005 <0.0005 <0.0005 <0.0005 24 Zinc mg/L (5) <0.002 <0.002 <0.002 0.005 24 Bacteriological Data Coliforms, total PA/100 mL 62 Absent Absent Absent 734 E. coli PA/100 mL 62 Absent Absent Absent 734 * Health Canada Guidelines for Canadian Drinking Water Quality Maximum Acceptable Concentration and Alberta Environment and Sustainable Resource Development Approval Limit. Limits in brackets indicates an aesthetic objective or operational guideline. 7.3 SUMMARY OF LABORATORY ANALYSIS Testing of the Edmonton Drinking Water 2016 Drinking Water Testing Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Grand Total Water Treatment Plant # Tests 7,603 7,194 7,812 7,354 7,697 7,455 7,601 7,634 7,458 7,592 7,439 7,652 90,491 # Samples 338 326 460 348 355 334 334 347 344 330 336 351 4,203 Field Reservoirs # Tests 720 715 780 700 720 780 715 780 861 942 770 720 9,203 # Samples 48 47 60 44 48 60 47 60 48 50 58 48 618 Routine Distribution # Tests 1,283 1,172 1,159 1,262 1,182 1,147 1,244 1,177 1,272 1,223 1,183 1,148 14,452 System # Samples 169 164 162 166 166 159 160 165 167 156 163 162 1,959 System # Tests 184 200 361 398 306 366 400 429 369 266 220 432 3,931 Depressurization/Repair # Samples 46 50 70 73 76 92 100 106 92 67 55 75 902 Customer Complaints # Tests 534 603 834 969 834 707 537 475 774 1,104 1,196 435 9,002 # Samples 11 12 16 17 20 17 11 13 18 24 24 9 192 Externally Contracted # Tests 972 202 232 964 204 228 202 204 204 208 224 202 4,046 Analyses # Samples 106 101 116 102 102 114 101 102 102 104 112 101 1,263 Total # Tests 11,296 10,086 11,178 11,647 10,943 10,683 10,699 10,699 10,938 11,335 11,032 10,589 131,125 # Samples 718 700 884 750 767 776 753 793 771 731 748 746 9,137 Additional Testing Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Grand Total New Watermain Testing # Tests 5 35 55 80 10 30 62 60 35 80 205 165 822 # Samples 1 7 11 16 2 6 12 12 7 16 41 33 164 Water Treatment Plant # Tests 16 16 20 16 20 18 16 16 20 16 20 21 215 Waste Discharge # Samples 4 4 5 4 5 5 4 4 5 4 5 6 55 Quality Control # Tests 8,202 8,420 8,183 9,092 8,619 8,445 8,618 8,580 8,184 8,329 8,073 8,447 101,192 # Samples 137 131 150 131 123 127 142 142 130 121 131 134 1,599 Total # Tests 8,223 8,471 8,258 9,188 8,649 8,493 8,696 8,656 8,239 8,425 8,298 8,633 102,229 # Samples 142 142 166 151 130 138 158 158 142 141 177 173 1,818 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Grand Total Grand Total # Tests 19,760 19,483 19,466 21,777 20,303 19,910 19,442 19,417 19,946 20,516 19,872 19,996 239,888 # Samples 724 712 901 771 775 788 770 810 784 752 795 786 9,368 7.4 Bacteriological Data: Water Treatment Plants 2016 Treated Water Entering the Distribution System # of +ve Samples # of Samples Limit Required GCDWQ or Frequency - Rossdale E.L. Smith Rossdale E.L. Smith Approval Each Plant* Unit Coliforms, total 0 1** 366 368 0/100 mL [daily] PA/100 mL E. coli 0 1** 366 368 0/100 mL [daily] PA/100 mL Heterotrophic Plate Count 5 10 366 367 N/A [daily] CFU/mL Water Entering the Plant Reservoir # of +ve Samples # of Samples Limit Required GCDWQ or Frequency - Rossdale E.L. Smith Rossdale E.L. Smith Approval Each Plant* Unit Coliforms, total 0 0 365 368 N/A [daily] PA/100 mL E. coli 0 0 365 368 N/A [daily] PA/100 mL Heterotrophic Plate Count 5 3 365 367 N/A [daily] CFU/mL Raw River Water Entering the Treatment Plants Rossdale E.L. Smith Rossdale E.L. Smith Limit Required GCDWQ or Frequency - Mean Min Max Mean Min Max # of Samples Approval Each Plant* Unit Coliforms, total 2,425 30 160,000 5,069 28 240,000 365 54 N/A [weekly] PA/100 mL E. coli 148 <1 7,500 174 <1 6,100 365 54 N/A [weekly] PA/100 mL Heterotrophic Plate Count 1,868 86 8,500 753 49 4,200 12 12 N/A [monthly] CFU/mL * Indicates EPCOR Operations Program.