How is WaterCheckup different from other water quality checkers?

Most water quality checkers tap one EPA database. WaterCheckup combines five federal datasets plus EWG health guidelines: SDWIS violations, UCMR5 PFAS monitoring (2023–2025), enforcement history, lead tap sampling, lead service line inventory, and EWG benchmarks — merged into one free ZIP report with an A–F Water Safety Grade and expert filter guidance.

What is the WaterCheckup Water Safety Grade?

Each city and ZIP report includes a Water Safety Score (0–100) and letter grade (A– through F) based on EPA violation history, PFAS UCMR5 detections, contaminant severity, and how levels compare to health guidelines — not just whether your utility meets legal limits. Grades are explained in plain language with filter recommendations from a 30-year water treatment expert.

Is my tap water safe to drink?

It depends on your water system, home plumbing, and which contaminants matter for your household. Enter your ZIP at watercheckup.com for a free report that merges EPA SDWIS, PFAS testing, lead data, and EWG health guidelines — then see certified filter options if PFAS, lead, or other issues are flagged.

What water filter removes PFAS?

Only reverse osmosis (NSF/ANSI 58) and select carbon systems (NSF 401 or P473) are certified to remove PFAS forever chemicals. Standard Brita pitchers improve taste but are not certified for PFAS. WaterCheckup shows PFAS levels for your utility and recommends NSF-certified systems matched to your water profile.

See What's Really In
Your Tap Water

The most comprehensive free water quality database in America — 400,000+ utilities, all 50 states, built by a 30-year water treatment expert.

Enter your ZIP, city, county, or utility for EPA-backed reports and contaminant-matched filter picks — free, no login.

ENTER YOUR ZIP OR CITY

Discover hidden contaminants in your tap — drawn from federal Safe Drinking Water records. No account required.

Official records, plain English

We pull from published drinking-water data—not scary rumors—then turn it into a score and filter ideas for your ZIP.

Why filtration matters

Tap water

Varies by city & pipes

→

Filtered

Right filter for what tests found

Illustration only — your report uses real levels for your area.

How we analyze water →

WHAT PEOPLE ARE SAYING

★★★★★

“I had no idea my water had PFAS above the federal limit. Checked my ZIP, saw the report, ordered a filter that same night.”

Sarah M.

Columbus, OH

★★★★★

“Finally a site that shows real EPA data instead of just trying to sell me something. The score made it immediately clear my water was a problem.”

David K.

Phoenix, AZ

★★★★★

“Moved to a new city and checked the water before I even unpacked. Three open violations. Bought a filter before my first glass.”

Priya S.

Chicago, IL

★★★★★

“My daughter has been drinking this water for two years. Seeing the lead risk on here convinced me to get a filter immediately. Should have found this sooner.”

Marcus T.

Baltimore, MD

★★★★★

“We’re on a tight budget, so “free” mattered. Same EPA numbers I’d dig for myself, but in one screen — I finally understood what to filter for.”

James R.

Denver, CO

★★★★★

“I compared our report to the utility’s PDF and it lined up. Gave me confidence to pick an RO system instead of guessing off a blog post.”

Elena V.

Austin, TX

WHY WATERCHECKUP

Why WaterCheckup

Most Comprehensive Coverage

400,000+ local water utilities tracked across all 50 states. From major cities to small towns — if the EPA regulates it, WaterCheckup covers it. More coverage than any other free water quality site.