
The following water quality report for Medical Lake, Washington, is based on research conducted by the Environmental Working Group (EWG) from 2018 to 2024.
Your water comes from a series of wells. We're required to monitor our city's drinking water for specific contaminants regularly. Those results are an indicator that our water meets health standards.
Concerned about your water? See options for complimentary water testing in Medical Lake.


The city water of Medical Lake tested positive for 15 contaminants. Any questions or concerns? WHS Water has a list of local water experts in your area who can help you understand your specific water chemistry and viable forms of filtration.
Get in contact with local water experts in your area to help you learn about your specific water chemistry.

Learn about the research and science behind health guidelines to fill in the gaps in outdated government standards. Health guidelines are created to establish standards that prioritize health and safeguard drinking water.
Environmental Working Group (EWG) “EWG’s Tap Water Database: What’s in Your Drinking Water?” 2024 https://www.ewg.org/tapwater/

We partner with local water companies that provide complimentary water testing.
WHS Water Division
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