Site Accessibility Information Access Key 1 to Skip to Top Navigation Access Key 2 to Skip to the Three One One link Access Key 3 to Skip to City of Winnipeg Main Menu Access Key 4 to Skip to Left Navigation Menu Access Key 5 to Skip to Content area Access Key 6 to Skip to Right Sidebar content area Access Key 7 to Skip to Footer Links
City of Winnipeg
|  Link to the City of Winnipeg French websiteFrançais  |

Image of water running out of a tap2005 Winnipeg water quality test results

Winnipeg is the last location where we add chlorine to the water - at the outlet from each of the three pumping stations. The other locations are at the Shoal Lake intake and at the Deacon Reservoir outlet. We maintain an average free chlorine residual of between 0.3 and 0.4 milligrams per litre in the distribution system.

Testing
Winnipeg water is intensively monitored on a routine basis to ensure that the water is safe and that regulatory requirements are met. Because water quality is so important, our level of monitoring and sampling exceeds Provincial regulatory requirements.

  • We monitor chlorine at the places where it is added, and at 19 sites throughout the distribution system. Equipment is used to continuously monitor chlorine levels at the pumping stations and the distribution system levels are checked weekly from about the beginning of May to about the end of October, and every two weeks at other times.
  • Microbiological samples are taken weekly at over 60 locations throughout the system. Tests are conducted for general bacteria and for coliform bacteria according to Provincial regulations.

We also test Winnipeg water for:

  • routine water chemistry
  • metals (analyzed both by us and the Province)
  • disinfection by-products

We measure how water quality changes within the distribution system and the quality of water delivered to customers with these tests. We also respond to customer inquiries and complaints about water quality. Contact us for more information.

What is being
measured
How it's
measured
Guideline
or regulation
Winnipeg
average
Winnipeg
range
Comments
Odour units Inoffensive 75 20 to 150 Raw water - guideline does not apply
Geosmin parts per trillion no guideline 14 <1 to 54 Common taste and odour compound
IPMP - 2-isopropyl-3-methoxypyrazine parts per trillion no guideline <2 <2 Common taste and odour compound
IBMP - 2-isobutyl-3-methoxypyrazine parts per trillion no guideline <2 <2 Common taste and odour compound
MIB - 2-methylisoborneol parts per trillion no guideline <2 <2 to 13 Common taste and odour compound
246 TCA - 2,4,6-trichloroanisole parts per trillion no guideline <2 <2 Common taste and odour compound
236 TCA - 2,3,6-trichloroanisole parts per trillion no guideline <2 <2 Common taste and odour compound
345 TCV - 3,4,5-trichloroveratrole parts per trillion no guideline <2 <2 Common taste and odour compound
Chlorophyll-a parts per billion no guideline <1 <1 Chlorophyll is found in algae
Microcystin LR parts per billion no more than 1.5 <0.2 <0.2 Meets the guideline
Turbidity (clearness) Nephelometric turbidity units no more than 1 0.52 0.25 to 1.5 Does not always meet the guideline
Colour, True units no more than 15 3 3 to 5 Meets the guideline
Total Dissolved Solids milligrams per litre no more than 500 100 96 to 108 Meets the guideline
Conductivity microsiemens per centimetre no guideline 160 150 to 170 Another measure of dissolved solids
pH units between 6.5 and 8.5 7.38 7.12 to 7.72 Meets the guideline
Temperature degrees Celsius no more than 15 10.1 2.5 to 33 Does not always meet the guideline
Total Alkalinity parts per million as calcium carbonate no guideline 62.8 56 to 71  -
Total Hardness parts per million as calcium carbonate no guideline 76 69 to 90 80 to 100 parts per million is recommended
Total Organic Carbon parts per million no guideline 7 5.8 to 8.5  -
Total Inorganic Carbon parts per million no guideline 15 12 to 16  -
Fluoride parts per million no more than 1.5 0.85 0.78 to 0.93 Meets the guideline
Nitrate parts per million no more than 10 0.01 <0.01 to 0.04 Meets the guideline
Phosphorus as orthophosphate parts per million no guideline 1.8 1 to 2.5 Added for lead control program
Chloride parts per million no more than 250 <9 <9 Meets the guideline
Sulphate parts per million no more than 500 <9 <9 Meets the guideline
Chlorine (total) parts per million no guideline 0.82 0.38 to 1.28  -
Chlorine (free) parts per million no guideline 0.46 0.07 to 0.91  -
Trihalomethanes a parts per billion no more than 100 115 76 to 163 Does not always meet the guideline
Bromodichloromethane a parts per billion no more than 16 11.3 7.1 to 15.1 Meets the guideline
Haloacetic acids parts per billion under review 120 68 to 171 Guideline under review by Health Canada
Calcium parts per million no guideline 21.7 19 to 23.1 Contributes to hardness
Magnesium parts per million no guideline 5.87 5.17 to 6.41  -
Sodium parts per million no more than 200 2.02 1.86 to 2.19 Raw water - guideline does not apply
Potassium parts per million no guideline 1.23 1.14 to 1.36  -
Iron parts per million no more than 0.3 0.04 0.03 to 0.06 Meets the guideline
Copper parts per million no more than 1.0 0.101 0.035 to 0.273 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 0.2 0.004 0.002 to 0.008 Meets the guideline
Arsenic parts per million no more than 0.025 <0.001 <0.001 to 0.001 Meets the guideline
Chromium parts per million no more than 0.05 <0.001 <0.001 to <0.004 Meets the guideline
Nickel parts per million no guideline 0.001 <0.001 to 0.001  -
Cadmium parts per million no more than 0.005 <0.001 <0.001 Meets the guideline
Manganese parts per million no more than 0.05 0.01 <0.01 to 0.02 Meets the guideline
Zinc parts per million no more than 5.0 <0.003 <0.003 to 0.016 Meets the guideline
Antimony parts per million no more than 0.006 0.0003 0.0003 to 0.0004 Meets the guideline
Barium parts per million no more than 1.0 0.014 0.012 to 0.016 Meets the guideline
Beryllium parts per million no guideline <0.0002 <0.0002  -
Bismuth parts per million no guideline <0.0002 <0.0002  -
Boron parts per million no more than 5 0.01 <0.01 to 0.01 Meets the guideline
Cesium parts per million no guideline <0.0001 <0.0001  -
Cobalt parts per million no guideline <0.0002 <0.0002  -
Lithium parts per million no guideline 0.00215 0.0021 to 0.0022  -
Molybdenum parts per million no guideline 0.0001 <0.0001 to 0.0001  -
Selenium parts per million no more than 0.01 <0.0002 <0.0002 Meets the guideline
Silicon parts per million no guideline 0.32 0.13 to 0.51  -
Silver parts per million no guideline 0.0001 0.0001  -
Strontium parts per million no guideline 0.0355 0.032 to 0.039  -
Tellurium parts per million no guideline <0.0002 <0.0002  -
Thallium parts per million no guideline 0.00002 <0.00002 to 0.00005  -
Thorium parts per million no guideline <0.0001 <0.0001  -
Tin parts per million no guideline <0.0002 <0.0002 to 0.0002  -
Titanium parts per million no guideline 0.0004 0.0004  -
Uranium parts per million no more than 0.02 <0.0001 <0.0001 Meets the guideline
Vanadium parts per million no guideline <0.0002 <0.0002  -
Zirconium parts per million no more than 0.1 <0.002 <0.002 Meets the guideline

* For more information on lead in drinking water, read our lead control program question and answer section.

Bacterial Testing

What is being measured Guideline Our test results Comments
Number of total coliform bacteria tests in year 1820 samples 3240 samples More testing than required by the guideline/provincial regulation
Number of times that total coliform bacteria show up in a test No more than 320 positive total coliform 18 positive test results All resamples were negative and met the guideline/provincial regulation
Number of times that more than 10 total coliform bacteria show up in a test No more than 10 bacteria per sample 6 samples with greater than 10 bacteria All resamples were negative and met the guideline/provincial regulation
Number of heterotrophic (bacteria) plate count (HPC) tests done No guideline 3239 samples Heterotrophic plate count is not required under the new provincial regulations.
Number of times that HPC counts are more than 500 colonies No guideline 12 samples with bacteria count greater than 500 11 resamples met the guideline. One resample was more than 500 and the watermain was flushed and resampled. The resample was less than 500.

(a) Guidelines for Canadian Drinking Water Quality: Guideline Technical Document, Trihalomethanes, May 2006.
      Guidelines from 'Summary of Guidelines for Canadian Drinking Water Quality' by Health Canada, March 2006.

 Select this icon to print a printer friendly version of this page This page is printer friendly.

top of pageTop of page

This page was last updated on June 23, 2016