The City of Issaquah is committed to delivering the best quality drinking water. To that end, we remain vigilant in meeting the challenges of source water protection, water conservation and community education while continuing to serve the needs of all of our water users.
Each year, we take hundreds of water samples to determine the presence of any radioactive, biological, inorganic, volatile organic or synthetic organic contaminants. Our annual Water Quality Reports illustrate the results of those tests, as well as other valuable information.
Most Recent Water Quality Report
All Available Water Quality Reports
Learn more about how the City of Issaquah is now filtering PFAS from its drinking water.