January 2026

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Arsenic in Spokane Drinking Water: What’s the Risk?

According to the Environmental Protection Agency (EPA) and the Environmental Working Group (EWG), Spokane’s municipal drinking water has 3.19 ppb of arsenic. The EWG’s health guidelines define a safe amount of arsenic as 0.004 ppb or less, making Spokane water’s arsenic 797 times the recommended health guideline. So, what does that mean, and is our

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How to Filter Spokane Water Contaminants | Quick Guide

A water quality report for Spokane, Washington, conducted by the Environmental Protection Agency (EPA) and the Environmental Working Group (EWG) in 2024 found 26 total water contaminants in Spokane’s municipal water source. Spokane’s water comes from the Spokane Valley Rathdrum Prairie Aquifer (SVRP). The largest water source for the SVRP is the Spokane River, where most water

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14 Total Water Contaminants Found in Pullman, WA

The Environmental Protection Agency (EPA) found 14 total water contaminants in Pullman, Washington, in research conducted in 2024. Municipal water in Pullman comes from the Pullman-Moscow Groundwater Basin, where contaminants enter the water source. Water contaminants are not always harmful, but in large quantities can cause adverse health effects. The Environmental Working Group (EWG) advises

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