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Water quality · PA

Pennsylvania Water Quality (2026)

Clear water flowing from a polished chrome kitchen faucet into a glass

Ranks among the most contaminated states. About 19% of tested systems had PFAS above the EPA standard; USGS found PFAS in 76% of sampled PA rivers and streams.

Our Pennsylvania coverage focuses on the 1 metros below: Philadelphia. Each city page lists the utility's water source, hardness in grains per gallon, any contaminants flagged above EWG's stricter health guideline, and the whole-house system type that matches that specific profile, not a generic recommendation copied across the state.

If your Pennsylvania city is not in the list yet, the nearest covered metro is usually a reasonable proxy: regional source water and treatment plants are typically shared across nearby municipalities. Private wells in Pennsylvania are a different story and need a mail-in lab panel, the utility CCR will not apply.

Sources: EWG; USGS

Cities we cover