Know Exactly What's
in Your
100% FREE. No login. No credit card. The only free tool that combines EPA violation records, PFAS testing data, lead tap sampling, enforcement history, and lead pipe inventory — then tells you exactly which filter removes what's in your water.
TYPE ZIP CODE OR CITY NAME
🇺🇸
Every US Water System
Any ZIP or city name. All 50 states. Municipal and well water.
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Real EPA Data
The only free tool combining 5 EPA databases — violations, PFAS testing, lead tap sampling, enforcement history, and lead pipe inventory — in one ZIP code search.
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Free Filter Solutions
Top-rated systems matched to your exact contaminants. No guessing.
1
The Problem — What's in Your Water?
Most people have no idea what's coming out of their tap. Here's the truth.
45%
of US tap water contains PFAS
400K+
miles of lead pipes still in use
270M
Americans drink disinfection byproducts daily
75%
of US water has detectable Chromium-6
☣️
PFAS "Forever Chemicals"
Cancer · Hormones · Immunity
Found in 45% of US tap water (USGS, 2023). Linked to kidney & testicular cancer, thyroid disease, and immune suppression. They never break down — standard carbon filters do NOT remove them. Only RO or certified PFAS filters work.
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Lead
Brain damage · No safe level
Over 400,000 miles of lead service lines still deliver water in the US. Lead causes permanent IQ loss and neurological damage — especially in children under 6. The EPA says there is no safe level. Comes from pipes, not the source.
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Chlorine & Disinfection Byproducts
Probable carcinogen · THMs · HAAs
Every water utility adds chlorine or chloramine. These react with organic matter to form Trihalomethanes (THMs) and Haloacetic Acids (HAAs) — both classified as probable human carcinogens by the EPA. 270 million Americans drink them daily.
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Nitrates
Infant mortality · Agricultural runoff
The #1 contaminant in rural and agricultural America. Nitrates above 10 mg/L cause "blue baby syndrome" — life-threatening oxygen deprivation in infants. Comes from fertilizer runoff and livestock waste. Standard pitchers do not remove it.
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Arsenic
Bladder · Lung · Skin cancer
Naturally occurring and odorless — you cannot taste it. Chronic exposure is linked to bladder, lung, and skin cancers. Over 2 million Americans drink water above the EPA limit of 10 ppb, and the WHO considers that limit too high.
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Chromium-6 (Hexavalent Chromium)
Probable carcinogen · 75% of water
The Erin Brockovich chemical. Found in 75% of US drinking water systems at levels above health guidelines. The EPA legal limit is for total chromium — Chromium-6 alone has no enforceable limit yet. Linked to gastrointestinal cancer.
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Microplastics & Nanoplastics
Emerging · Inflammation · Hormones
Found in virtually 100% of tap water samples worldwide. Recent studies detect them inside human blood, lungs, and placentas. Carry hormone-disrupting chemicals and heavy metals. Standard filters do not remove nanoplastics — only RO membranes do.
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Hard Water (Calcium & Magnesium Scale)
Pipe damage · Skin · Appliances
85% of the US has hard water. Scale builds up in pipes, water heaters, and appliances — reducing efficiency by up to 48% and cutting appliance life in half. Hard water also strips moisture from skin and hair, worsening eczema and dryness.
Enter your ZIP code above ↑ to see exactly what EPA data shows for your water system
2
What's Your Living Situation?
We'll show you the right filters for your home type.
3
The Solution — Water Filter Systems
The right filter removes 95-99% of what's in your water. Our recommendations in every category are the highest-rated products on the market.
EPA SDWIS
Official data source
UCMR5
PFAS monitoring data
135+
City reports
100% Free
No account needed
BROWSE BY CITY
Check your city's water quality
Real EPA data for 135+ US cities. Click any city to see contaminant levels, violations, and filter recommendations.
Albuquerque, NMAtlanta, GAAustin, TXBaltimore, MDBoston, MACharlotte, NCChicago, ILCleveland, OHColumbus, OHDallas, TXDayton, OHDenver, CODes Moines, IADetroit, MIFayetteville, NCFort Worth, TXFresno, CAHouston, TXIndianapolis, INJackson, MSJacksonville, FLKansas City, MOLas Vegas, NVLos Angeles, CALouisville, KYMemphis, TNMiami, FLMilwaukee, WIMinneapolis, MNNashville, TNNew Orleans, LANew York, NYOrlando, FLPhiladelphia, PAPhoenix, AZPittsburgh, PAPortland, ORRaleigh, NCSacramento, CASalt Lake City, UTSan Antonio, TXSan Diego, CASan Francisco, CASan Jose, CASeattle, WASt. Louis, MOTacoma, WATampa, FLTucson, AZWashington, DCView all 135+ cities →
WHY WATERCHECKUP IS DIFFERENT
Why trust our data?
WaterCheckup is the only free tool that combines EPA violation records, PFAS testing data, lead tap sampling, enforcement history, and lead pipe inventory — then translates it into plain English and tells you exactly which filter removes what's detected in your water. No login. No paywall. Five EPA databases plus EWG health guidelines, all in one ZIP code search.
EPA Violation Records
Live violation history & enforcement records for 150,000+ public water systems
EPA PFAS Testing Data
Federal PFAS monitoring results 2023–2025 — the most comprehensive PFAS dataset ever collected
EPA Enforcement History
Inspection records, formal actions, and penalty data from the EPA enforcement database
EPA Lead Tap Sampling
Actual measured lead levels at your tap from EPA Lead & Copper Rule testing
EPA Lead Pipe Inventory
Federal lead service line inventory — every US utility required to publish as of October 2024
EWG Health Guidelines
Contaminant levels compared against stricter independent health benchmarks, not just legal limits
FROM THE BLOG
Is PFAS in My Tap Water?
PFAS found in 45% of US tap water. Here's how to check yours.
Best RO Systems for PFAS 2025
The certified filters that actually work, at every budget.
Tap Water Safety During Pregnancy
Lead, nitrates, PFAS -- what to filter and why.
Moving? Check the Water First
Water quality varies dramatically by city. Here's what to look for.