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Common FAQ's

​​​​​​​​​​​​​​​​​​​ Are you looking for other water, wastewater and storm water information?  You've come to the right place! Here are some common FAQ's. If you cannot find what you are looking for, please click on the link at the bottom of the page.


Accordion Answer

​Our water distribution system is designed and operated to deliver a minimum acceptable pressure delivered to each Lethbridge service connection of no less than 300 kilopascals (45 psi) during peak hour demand, and 350 kilopascals (50 psi) at maximum day demand.  The maximum pressure should not exceed 625 kilopascals (90 psi).

If there is a water main flush in your area, the water pressure will seem low, but will return to normal once the water main flushing is complete.

If there is another reason, contact Public Operations at 403-320-3850 and they will assist you in finding out the cause.


​​Lethbridge drinking water consistently exceeds regulated requirements established by Health Canada in the "Guidelines for Canadian Drinking Water Quality", and the specific requirements within our Approval from the Province of Alberta under the Environmental Protection and Enhancement Act.


​​The hardness of Lethbridge water varies and is highest in the winter.  It typically ranges from 140 milligrams per litre (about 8 grains per US gallon) to 210 milligrams per litre (about 12 grains per US gallon).


​​The smell can be due to changing temperatures or services in your area. In this case, it is safe. If there is no information being released about water interruptions in your area or required water conservation, please call Public Operations at 403-320-3850.


Accordion Answer

​​Do not flush any of the following items:

  • houseplant leaves and clippings
  • silt or mud
  • rags
  • human or animal hair
  • tea bags
  • coffee grounds
  • cooking grease or animal grease
  • cigarettes, cigars, butts
  • kitty litter
  • solvents, paint
  • sanitary napkins
  • tampon applicators (plastic or cardboard)
  • disposable diapers
  • boxes, packaging, wrappers

The items above do not biodegrade during time spent in the wastewater collection and treatment systems. They cause blockages in sanitary sewer service connections, mains and pumping stations, causing backups into homes, and unnecessary discharges to the environment. They foul valves and pumps, resulting in thousands of dollars in maintenance and repair costs each year.

The same answer goes to homes which use on-site disposal (septic tanks and disposal fields). These items do not quickly biodegrade and therefore take up space and may interfere with the normal operation in the tank. They may also interfere with tank maintenance, and may detrimentally affect the municipal system when/if the sludge is finally disposed of.

The general rule is:
If you did not eat it first, you should find another way to dispose of it.

For more information, check out the​ "Don't Rush, Think Before You Flush" webpage.



Accordion Answer

​​No. According to Bylaw 5594, no items other than rainwater can enter the stormwater system, as they pollute the Oldman River.

Rule of thumb: If it is not "RAINWATER" it should not be entering the stormwater system.

​Looking for construction specifications or current projects related to water and wastewater?