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Image of water treatment plant filter tanks2010 Water Treatment Plant treated water quality test results

The new Water Treatment Plant is a state-of-the-art, modern facility designed for performance, safety, and environmental sustainability. In the plant, the water goes through several treatment processes, including dissolved air flotation, ozonation, filtration and ultraviolet light disinfection. Fluoride and orthophosphate are also added to the water. The Water Treatment Plant allows us to:

  • meet increasingly strict Canadian drinking water quality guidelines,
  • virtually eliminate the risk of waterborne disease,
  • reduce levels of disinfection by-products and
  • significantly improve the taste and odour of the drinking water.

Testing
We test our water at Shoal Lake, at the Water Treatment Plant raw water inlet and at the Water Treatment Plant treated water outlet once the water has passed through all of the treatment processes. The water then flows from the water treatment plant to the three regional reservoirs and pumping stations before being distributed to Winnipeg homes and businesses.

At the Water Treatment Plant treated water sampling point we test for:

  • routine water chemistry
  • taste and odour compounds
  • metals
  • disinfection by-products
  • bacteria
What is being measured How it's measured Guideline or regulation Water Treatment Plant treated average Water Treatment Plant treated range Comments
Odour units Inoffensive 41 25 to 70 Meets the guideline
Geosmin*** parts per trillion no guideline <0.7 <0.5 to 0.8 Common taste and odour compound
IPMP - 2-isopropyl-3-methoxypyrazine*** parts per trillion no guideline <0.5 <0.5 to <0.5 Common taste and odour compound
IBMP - 2-isobutyl-3-methoxypyrazine*** parts per trillion no guideline <0.5 <0.5 to <0.5 Common taste and odour compound
MIB - 2-methylisoborneol*** parts per trillion no guideline <1.3 <0.5 to <2.0 Common taste and odour compound
246 TCA - 2,4,6-trichloroanisole*** parts per trillion no guideline <0.8 <0.5 to <2.0 Common taste and odour compound
236 TCA - 2,3,6-trichloroanisole*** parts per trillion no guideline <0.7 <0.5 to <2.0 Common taste and odour compound
345 TCV - 3,4,5-trichloroveratrole*** parts per trillion no guideline <0.5 <0.5 to <0.5 Common taste and odour compound
MTBE - methyl tertiary-butyl ether*** parts per million no more than 0.015 <0.0005 <0.0005 to <0.0005 Meets the guideline
NDMA - N-nitrosodimethylamine*** parts per billion under review 0.0031 0.0011 to 0.0050 Guideline under review by Health Canada
Plankton (algae) count cells per millilitre no guideline <100 <100 to 300 Algae contribute to odours and may cause filter clogging
Chlorophyll-a** parts per billion no guideline <1 <1 to 1 Chlorophyll is found in algae
Microcystin LR*** parts per billion no more than 1.5 <0.2 <0.2 to <0.2 Meets the guideline
Turbidity (clearness) Nephelometric turbidity units no more than 1 0.19 0.08 to 0.36 Meets the guideline
Colour, Apparent Apparent colour units no guideline 2.5 2.5 to 2.5  -
Total Solids parts per million no guideline 184 142 to 264  -
Total Dissolved Solids parts per million no more than 500 169 121 to 211 Meets the guideline
Conductivity microsiemens per centimetre no guideline 303 273 to 321 Another measure of dissolved solids
pH units between 6.5 and 8.5 7.90 7.40 to 8.33 Meets the guideline
Temperature degrees Celcius no more than 15 10.0 0.1 to 22.5 Does not always meet the guideline
Total Alkalinity parts per million as calcium carbonate no guideline 69 61 to 74  -
Total Hardness parts per million as calcium carbonate between 80 and 100 77 70 to 84 80 to 100 parts per million is recommended
Total Organic Carbon parts per million no guideline 4 2 to 20  -
Dissolved Organic Carbon parts per million no guideline 4 2 to 19  -
Total Inorganic Carbon* parts per million no guideline 14.1 8.8 to 16.6  -
Total Phosphorus*** parts per million no guideline <0.20 <0.20 to <0.20 Phosphorus can contribute to algae growth
Ammonia Dissolved* parts per million no guideline 0.020 <0.010 to <0.050  -
Nitrate Nitrogen* parts per million no more than 10 0.028 0.012 to 0.052 Meets the guideline
Chloride parts per million no more than 250 21 16 to 27 Meets the guideline
Sulfate parts per million no more than 500 44 19 to 59 Meets the guideline
UV Transmittance (Filtered) percent transmissivity no guideline 95.2 79.4 to 97.1  -
UV Transmittance (Unfiltered) percent transmissivity no guideline 94.0 78.0 to 96.6  -
Chlorine (free) parts per million no guideline 1.06 0.58 to 1.65  -
Chlorine (total) parts per million no guideline 1.24 0.70 to 1.91  -
Trihalomethanes parts per billion no more than 100 36 5 to 81 Meets the guideline
Haloacetic acids parts per billion no more than 80 17 <5 to 43 Meets the guideline
Aldehydes parts per billion no guideline 18 9 to 28  -
Calcium** parts per million no guideline 21.0 19.5 to 22.4 Contributes to hardness
Magnesium** parts per million no guideline 5.8 5.5 to 6.0 Contributes to hardness
Sodium parts per million no more than 200 32.8 24.1 to 64.5 Meets the guideline
Potassium** parts per million no guideline 1.2 1.1 to 1.4  -
Iron parts per million no more than 0.3 0.06 <0.01 to 0.24 Meets the guideline
Copper** parts per million no more than 1.0 0.007 0.002 to 0.014 Meets the guideline
Lead** parts per million no more than 0.01 <0.001 <0.001 to <0.001 Meets the guideline
Aluminum** parts per million no more than 0.1 0.004 0.001 to 0.015 Meets the guideline
Arsenic** parts per million no more than 0.01 <0.001 <0.001 to <0.001 Meets the guideline
Chromium** parts per million no more than 0.05 0.002 <0.001 to 0.005 Meets the guideline
Nickel** parts per million no guideline 0.003 0.002 to 0.004  -
Cadmium** parts per million no more than 0.005 <0.001 <0.001 to <0.001 Meets the guideline
Manganese** parts per million no more than 0.05 0.027 0.021 to 0.038 Meets the guideline
Zinc** parts per million no more than 5.0 0.009 <0.001 to 0.019 Meets the guideline
Mercury** parts per million no more than 0.001 <0.000001 <0.000001 to <0.000001 Meets the guideline
Antimony* parts per million no more than 0.006 <0.00020 <0.00020 to 0.00034 Meets the guideline
Barium* parts per million no more than 1 0.0149 0.0140 to 0.0169 Meets the guideline
Beryllium* parts per million no guideline <0.00020 <0.00020 to <0.00020  -
Bismuth* parts per million no guideline <0.00020 <0.00020 to <0.00020  -
Boron** parts per million no more than 5 0.011 0.010 to 0.012 Meets the guideline
Cesium* parts per million no guideline <0.00010 <0.00010 to <0.00010  -
Cobalt* parts per million no guideline <0.00020 <0.00020 to 0.00023  -
Lithium* parts per million no guideline 0.0020 <0.0020 to 0.0035  -
Molybdenum* parts per million no guideline <0.00020 <0.00020 to <0.00020  -
Rubidium* parts per million no guideline 0.00172 0.00156 to 0.00184  -
Selenium* parts per million no more than 0.01 <0.0010 <0.0010 to <0.0010 Meets the guideline
Silicon* parts per million no guideline 1.00 0.089 to 2.54  -
Silver* parts per million no guideline <0.00010 <0.00010 to 0.00020  -
Strontium* parts per million no guideline 0.0390 0.0360 to 0.0436  -
Tellurium* parts per million no guideline <0.00020 <0.00020 to <0.00020  -
Thallium* parts per million no guideline <0.00010 <0.00010 to <0.00010  -
Thorium* parts per million no guideline <0.00010 <0.00010 to <0.00010  -
Tin* parts per million no guideline <0.00020 <0.00020 to <0.00060  -
Titanium* parts per million no guideline 0.00025 <0.00020 to <0.00090  -
Tungsten* parts per million no guideline <0.0010 <0.00020 to <0.0010  -
Uranium* parts per million no more than 0.02 <0.00010 <0.00010 to <0.00010 Meets the guideline
Vanadium* parts per million no guideline <0.00020 <0.00020 to 0.00032  -
Zirconium* parts per million no more than 0.1 <0.00040 <0.00040 to <0.00040 Meets the guideline
* Data reported was collected from Branch I at McPhillips/Branch II at Hurst from January to June and from Water Treatment Plant - Finished Water Branch 1/2 from July to December.
** Data reported was collected from Branch I at McPhillips/Branch II at Hurst.
*** Data reported was only available from July to December.
  Guidelines from 'Summary of Guidelines for Canadian Drinking Water Quality' by Health Canada, revised February 1, 2011.

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Last updated: July 18, 2016