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Water Quality Reports

We have the drinking water tested quarterly for a wide range of parameters including Selenium, Bacterial Testing1 , Health Related Testing and Non-Health Related Testing. The Water Quality Reports summarize parameters of greatest health interest to the public.  

The drinking water in Lethbridge is consistently in full compliance with all provincial (Alberta Environment and Parks) regulations and federal (Health Canada) guidelines.  


PLEASE NOTE: Water Quality Reports will now be provided on a quarterly basis: March, June, September, and December.


Questions about Selenium levels in Lethbridge?

The Selenium levels in Lethbridge drinking water ranges from 0.3ug/L (micrograms per Litre) and 0.9ug/L with the average at 0.5ug/L.

However, the water treatment plant is not capable of reducing Selenium.  The Selenium concentration in the treated drinking water is largely unchanged from the river concentration.


2021 Water Quality Reports


June 2021

March 2021


2020 Water Quality Reports

February 2020

January 2020

mg/L = milligrams per litre or one part per million


1 Parameter without guideline. Hardness levels between 80 and 100mg/L (as CaCO3) are generally considered acceptable; hardness in excess of 200 mg/L is considered poor; hardness in excess of 500 mg/L is considered unacceptable.