
The following water quality report for Moscow, Idaho, is based on the research conducted by the Environmental Working Group (EWG) from 2014-2024.
Your water comes from wells that draw water from the Wanapum Aquifer and the Grande Ronde Aquifer in the Palouse Basin.
Concerned about your water? See options for complimentary water testing in Moscow.


The city water of Moscow tested positive for 10 contaminants. If you have questions about water treatment for specific contaminants, 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.
WHS Water Division takes pride in providing extensive drinking water quality data, research, and understanding of your local provider's water quality. If you'd prefer to have your water tested in person, reach out to a local water expert in the Eastern Washington and Northern Idaho area.

Learn about the research and science behind health guidelines as a way to fill in the gaps in outdated government standards.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 offer water testing at no cost to you.
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