Water Quality Reports
What's really in your city's water?
Look up contaminants, hardness, and your free Water Score — sourced from EPA SDWIS. Then compare trusted local pros.
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Get your water tested
City reports tell you what the utility measured at the plant. To find out what is coming out of your tap — or what is in a private well — you send a sample to a certified lab. We publish the official certification lists state by state, with the government source cited on every page.
Find an EPA-certified water testing labHow the Water Score works
Every city report on this site carries a 0–100 Water Score so you can read your water at a glance. It starts at 100 and drops based on what EPA records show for the public water system that serves your address — a lower score flags more issues to look into.
What is the Water Score?
The Water Score is a single 0–100 number summarizing how clean your tap water is, based on EPA SDWIS violation data for the public water system serving your address. The score starts at 100 and is reduced for measured contaminant levels relative to health guidelines, health-based violations on record, and water hardness.
How is the Water Score calculated?
It begins at 100 and is lowered based on three inputs from EPA records: measured contaminant levels relative to federal health guidelines, the number of health-based violations on file in EPA SDWIS, and local water hardness. A higher score means fewer issues on record for the measured contaminants.
What do the Water Score bands mean?
0–40 (Poor) means multiple contaminants above health guidelines. 41–70 (Fair) means some elevated contaminants worth addressing. 71–100 (Good) means the system is within guidelines on the measured contaminants. The score reflects the public system on record, not your home's plumbing, so an in-home test is still the only way to confirm what's at your tap.
See your city's data above, then book a free 30-minute water test — no pitch, no obligation.