Tap Water Lookup

Public records. A clearer perspective.

Your water.
In clearer focus.

What’s in your tap water? Explore the measurements, understand the context, and trace every number back to EPA records.

Independent. Sourced from the EPA. Made to be understood.

Behind every drop

30substances

29 PFAS + lithium
Measured in EPA’s national survey

Water systems in UCMR 5
10,313
County overviews
3,211
States & territories
56
Discover the data

01 / A national picture

Every place has
a water story.

Explore 56 states and territories and 3,211 county overviews. ZIPs without a published report lead to a state or county overview.

The water atlas

Explore the survey.

EPA UCMR 5 Public survey records

Alaska: PFAS found at 9 of 28 surveyed systems (32%). Open state report.Alabama: PFAS found at 116 of 306 surveyed systems (38%). Open state report.Arkansas: PFAS found at 10 of 172 surveyed systems (6%). Open state report.Arizona: PFAS found at 57 of 170 surveyed systems (34%). Open state report.California: PFAS found at 239 of 697 surveyed systems (34%). Open state report.Colorado: PFAS found at 37 of 158 surveyed systems (23%). Open state report.Connecticut: PFAS found at 42 of 63 surveyed systems (67%). Open state report.District of Columbia: PFAS found at 3 of 3 surveyed systems (100%). Open state report.Delaware: PFAS found at 17 of 34 surveyed systems (50%). Open state report.Florida: PFAS found at 188 of 390 surveyed systems (48%). Open state report.Georgia: PFAS found at 81 of 251 surveyed systems (32%). Open state report.Hawaii: PFAS found at 2 of 44 surveyed systems (5%). Open state report.Iowa: PFAS found at 32 of 151 surveyed systems (21%). Open state report.Idaho: PFAS found at 9 of 62 surveyed systems (15%). Open state report.Illinois: PFAS found at 127 of 479 surveyed systems (27%). Open state report.Indiana: PFAS found at 53 of 219 surveyed systems (24%). Open state report.Kansas: PFAS found at 34 of 102 surveyed systems (33%). Open state report.Kentucky: PFAS found at 87 of 231 surveyed systems (38%). Open state report.Louisiana: PFAS found at 47 of 257 surveyed systems (18%). Open state report.Massachusetts: PFAS found at 144 of 262 surveyed systems (55%). Open state report.Maryland: PFAS found at 26 of 78 surveyed systems (33%). Open state report.Maine: PFAS found at 9 of 38 surveyed systems (24%). Open state report.Michigan: PFAS found at 44 of 312 surveyed systems (14%). Open state report.Minnesota: PFAS found at 88 of 197 surveyed systems (45%). Open state report.Missouri: PFAS found at 77 of 241 surveyed systems (32%). Open state report.Mississippi: PFAS found at 9 of 233 surveyed systems (4%). Open state report.Montana: PFAS found at 5 of 40 surveyed systems (13%). Open state report.North Carolina: PFAS found at 140 of 283 surveyed systems (49%). Open state report.North Dakota: PFAS found at 7 of 41 surveyed systems (17%). Open state report.Nebraska: PFAS found at 7 of 51 surveyed systems (14%). Open state report.New Hampshire: PFAS found at 17 of 48 surveyed systems (35%). Open state report.New Jersey: PFAS found at 167 of 245 surveyed systems (68%). Open state report.New Mexico: PFAS found at 11 of 77 surveyed systems (14%). Open state report.Nevada: PFAS found at 7 of 37 surveyed systems (19%). Open state report.New York: PFAS found at 97 of 322 surveyed systems (30%). Open state report.Ohio: PFAS found at 138 of 332 surveyed systems (42%). Open state report.Oklahoma: PFAS found at 68 of 166 surveyed systems (41%). Open state report.Oregon: PFAS found at 17 of 123 surveyed systems (14%). Open state report.Pennsylvania: PFAS found at 161 of 360 surveyed systems (45%). Open state report.Puerto Rico: PFAS found at 37 of 96 surveyed systems (39%). Open state report.Rhode Island: PFAS found at 14 of 26 surveyed systems (54%). Open state report.South Carolina: PFAS found at 92 of 164 surveyed systems (56%). Open state report.South Dakota: PFAS found at 6 of 55 surveyed systems (11%). Open state report.Tennessee: PFAS found at 86 of 275 surveyed systems (31%). Open state report.Texas: PFAS found at 611 of 1,123 surveyed systems (54%). Open state report.Utah: PFAS found at 17 of 128 surveyed systems (13%). Open state report.Virginia: PFAS found at 50 of 163 surveyed systems (31%). Open state report.Vermont: PFAS found at 3 of 35 surveyed systems (9%). Open state report.Washington: PFAS found at 68 of 245 surveyed systems (28%). Open state report.Wisconsin: PFAS found at 52 of 196 surveyed systems (27%). Open state report.West Virginia: PFAS found at 32 of 99 surveyed systems (32%). Open state report.Wyoming: PFAS found at 4 of 32 surveyed systems (13%). Open state report.

Choose a state to open its records. The menu also includes small states and territories.

Start with a place

Find your local picture.

56

state and territory overviews to explore

See how many surveyed systems reported PFAS, then follow the records to your community.

Hover or focus on a state for a quick view.

How to read the data

Share of surveyed systems where PFAS was found

<25%25–<50%50–<75%≥75%No survey data

A detection is not the same as exceeding an EPA limit. These are system records, not tests of your faucet.

Browse all 56 states & territories
Water pouring from a kitchen faucet into a clear glassStart with a place.
Follow the evidence.

02 / From records to understanding

A little context.
A clearer view.

  1. 01

    Find the likely utility

    We join federal system records, service-area maps and Census geography, and show how confident the match is.

  2. 02

    Read measurements in context

    Each result sits next to its EPA reference value, with the sampling date, unit and basis for comparison.

  3. 03

    Confirm the local picture

    Use the utility’s annual report or a certified laboratory when you need current results for one specific tap.

How we connect the data

03 / Know what is measured

Big names.
Plain explanations.

Understand what EPA measures, the reference values it publishes, and the context behind each result.

PFOA

A "forever chemical" once used in non-stick and stain-resistant products. Regulated in drinking water since 2024.

EPA limit (MCL) · 4.0 ppt

PFOS

Used for decades in firefighting foam and fabric protection. Persists in groundwater near airports and bases.

EPA limit (MCL) · 4.0 ppt

Lead

Enters water from old service lines and household plumbing. Measured at customer taps, not at the plant.

Action level · 15 ppb

Lithium

Naturally occurring in groundwater. Sampled nationwide for the first time under UCMR 5.

Health reference level · 10 ppb
Explore the full contaminant guide

04 / Keep the conversation flowing

Follow the story.
Find your next step.

Connect the national picture to the questions you bring home. Read the briefing, explore the numbers, and find the right people to ask.

NewsThe water briefing

U.S. EPA

EPA launches a broader search for drinking-water contaminants

Our latest briefing connects the announcement to the bigger picture, with the original source and a clear account of what it means.

Read the latest briefing
StatisticsEPA UCMR 5

10,313systems in the national survey records

A wider view.
A clearer denominator.

Explore state-by-state findings, PFAS detection counts, and the dates behind every snapshot.

Explore national statistics
AlertsOfficial resources

Know where
to turn.

Find your utility and drinking-water agency, understand advisory types, and explore briefing preferences.

For an active local advisory, follow your utility’s official notices. This site does not track live emergencies.

Find advisory resources
CommunityA new place to connect

Your water questions
belong here.

Bring a question about your water report. Share a useful public source. Help start a thoughtful conversation about drinking water.

Local perspectives. Sources that everyone can follow.
Explore the community

What these pages can and cannot tell you

The site republishes federal public records. UCMR 5 samples were collected where water enters a distribution system; lead and copper samples come from selected customer taps. Neither is a test of your own faucet.

We show measurements, EPA reference values, dates, units and the basis of each comparison. We do not assign a "safe" rating.

Read the methodology

Keep exploring

Every record tells
part of the story.

Find a place. Read the measurements.
Understand the context.

Explore water records