Type your ZIP code. We match it to the water systems that serve it (EPA's own list) and show their PFAS and lithium results from the national UCMR 5 programme, read 2026-10-31.
Static lookup: nothing you type leaves your browser. 20,768 ZIP codes, 10,313 water systems. A ZIP served by no listed system means the system did not report ZIP codes to EPA, or serves fewer than 3,300 people and was not sampled; check your utility's Consumer Confidence Report instead.
| System | People served | PFAS in UCMR 5 |
|---|---|---|
| New York City SystemNY | 8,271,000 | none detected |
| Los Angeles-City, Dept. of Water & PowerCA | 3,875,566 | detected, below MCL |
| City of Houston, TxTX | 2,970,543 | detected, below MCL |
| ChicagoIL | 2,721,308 | none detected |
| San Antonio Water SystemTX | 2,643,729 | detected, below MCL |
| Mdwasa - Main SystemFL | 2,377,460 | above MCL: PFOA, PFOS |
| Washington Suburban Sanitary CommissionMD | 1,900,000 | none detected |
| Phoenix City ofAZ | 1,695,000 | detected, below MCL |
| City of BaltimoreMD | 1,600,000 | none detected |
| Philadelphia Water DepartmentPA | 1,600,000 | above MCL: PFOA, PFOS |
| Las Vegas Valley Water DistrictNV | 1,539,277 | detected, below MCL |
| East Bay MudCA | 1,468,000 | none detected |
| San Diego, City ofCA | 1,408,937 | detected, below MCL |
| Dallas Water UtilityTX | 1,356,479 | above MCL: PFOA, PFOS |
| Columbus Public Water SystemOH | 1,309,468 | above MCL: PFOA |
| Cleveland Public Water SystemOH | 1,308,955 | none detected |
| Denver Water BoardCO | 1,287,000 | detected, below MCL |
| Charlotte WaterNC | 1,206,285 | none detected |
| Seattle Public UtilitiesWA | 1,161,961 | none detected |
| Fairfax County Water AuthorityVA | 1,121,613 | above MCL: PFOA, PFOS |
| City of Austin Water & WastewaterTX | 1,115,323 | above MCL: PFOS |
| Mo American St Louis St Charles CountiesMO | 1,111,000 | detected, below MCL |
| Suffolk County Water AuthorityNY | 1,100,000 | above MCL: PFOA, PFOS, PFHxS |
| AtlantaGA | 1,089,893 | detected, below MCL |
| MetropolitanoPR | 1,084,637 | above MCL: PFOA, PFOS |
| San Jose WaterCA | 1,039,920 | above MCL: PFOS |
| Gwinnett Co. Dept. of Water ResourcesGA | 975,000 | none detected |
| City of Fort WorthTX | 955,900 | above MCL: PFOA, PFOS, PFHxS |
| Citizens Water - IndianapolisIN | 880,345 | detected, below MCL |
| Sfpuc City Distribution DivisionCA | 848,019 | none detected |
| Jea Major GridFL | 826,664 | detected, below MCL |
| Aqua Pa Main SystemPA | 822,600 | above MCL: PFOA, PFOS, PFNA |
| Louisville Water CompanyKY | 806,997 | above MCL: PFOA |
| Cincinnati Public Water SystemOH | 800,000 | above MCL: PFOS |
| Suez Water New Jersey HackensackNJ | 792,713 | above MCL: PFOA, PFOS |
| Nashville Water DeptTN | 789,969 | none detected |
| El Paso Water Utilities Public Service BTX | 747,168 | above MCL: PFOS |
| Dekalb CountyGA | 743,000 | none detected |
| City of Tampa Water DepartmentFL | 733,886 | above MCL: PFOA, PFOS |
| Tucson City ofAZ | 732,906 | detected, below MCL |
| Cobb CountyGA | 695,000 | detected, below MCL |
| Pa Amer Water Co-PittsburghPA | 686,000 | detected, below MCL |
| Boston Water and Sewer Commission (Mwra)MA | 675,647 | none detected |
| Palm Beach County Water UtilitiesFL | 671,114 | above MCL: PFOA, PFOS |
| Kentucky-American Water CoKY | 669,042 | detected, below MCL |
| Portland Water BureauOR | 666,200 | none detected |
| Metropolitan Utilities DistrictNE | 660,000 | detected, below MCL |
| Eastern Municipal WdCA | 659,923 | detected, below MCL |
| Memphis Light, Gas, & WaterTN | 659,500 | none detected |
| Birmingham Water Works BoardAL | 653,322 | detected, below MCL |
| Raleigh, City ofNC | 650,000 | above MCL: PFOS |
| Oklahoma CityOK | 644,000 | detected, below MCL |
| Detroit City ofMI | 633,218 | none detected |
| D.C. Water and Sewer AuthorityDC | 632,323 | none detected |
| Hnl-Windward-Pearl HarborHI | 631,389 | detected, below MCL |
| Milwaukee WaterworksWI | 626,000 | none detected |
| Nj American Water - RaritanNJ | 615,430 | above MCL: PFOA, PFOS |
| Baton Rouge Water CompanyLA | 596,844 | detected, below MCL |
| Albuquerque Water SystemNM | 560,326 | detected, below MCL |
| Kansas City PwsMO | 553,295 | detected, below MCL |
| City of FresnoCA | 545,970 | above MCL: PFOA, PFOS, PFHxS |
| Orlando Utilities Commission (7 Wps)FL | 536,466 | none detected |
| Aurora City ofCO | 533,407 | detected, below MCL |
| City of Sacramento MainCA | 527,979 | above MCL: PFOA, PFOS, PFHxS |
| McwaNY | 525,262 | detected, below MCL |
| Pittsburgh Water & Sewer AuthPA | 520,000 | none detected |
| Hcpud/South-CentralFL | 515,012 | above MCL: PFOS |
| Pinellas County UtilitiesFL | 506,353 | none detected |
| Water District 1 of Johnson CoKS | 490,000 | detected, below MCL |
| Long Beach-City, Water Dept.CA | 466,772 | detected, below MCL |
| Mesa City ofAZ | 466,000 | detected, below MCL |
| Colorado Springs UtilitiesCO | 464,111 | detected, below MCL |
| Irvine Ranch Water DistrictCA | 450,323 | detected, below MCL |
| Tacoma Water Division City ofWA | 446,245 | detected, below MCL |
| Truckee Meadows Water AuthorityNV | 442,000 | above MCL: PFOA, PFOS, PFHxS |
| Virginia Beach, City ofVA | 437,994 | none detected |
| North Fulton CountyGA | 434,517 | none detected |
| Greenville Water (2310001)SC | 426,057 | none detected |
| MinneapolisMN | 425,300 | none detected |
| Regional Water AuthorityCT | 418,900 | above MCL: PFOA, PFOS |
| City of ArlingtonTX | 413,955 | above MCL: PFOS |
| TulsaOK | 413,000 | none detected |
| Newport News, City ofVA | 407,300 | above MCL: PFOS |
| Wichita, City ofKS | 395,699 | detected, below MCL |
| Saint Paul Regional Water ServicesMN | 392,529 | none detected |
| Winston-Salem, City ofNC | 391,900 | none detected |
| Metropolitan District CommissionCT | 390,887 | none detected |
| Chesterfield Co Central Water SystemVA | 389,897 | none detected |
| Salt Lake City Water SystemUT | 383,612 | above MCL: PFOS, PFHxS |
| Nj American Water - Coastal NorthNJ | 377,613 | above MCL: PFOA |
| North Las Vegas UtilitiesNV | 376,515 | detected, below MCL |
| Vancouver City ofWA | 373,047 | above MCL: PFOA, PFOS |
| Central Arkansas WaterAR | 368,455 | none detected |
| Toledo, City ofOH | 360,000 | none detected |
| Columbia City of (Sc4010001)SC | 354,068 | above MCL: PFOA, PFOS |
| Aquarion Water Co of Ct-Main SystemCT | 351,756 | above MCL: PFOA, PFOS |
| City of AnaheimCA | 350,254 | above MCL: PFOA, PFOS, PFHxS |
| OcwaNY | 350,000 | none detected |
| St Petersburg, City ofFL | 349,979 | none detected |
| Manatee County Utilities DeptFL | 347,800 | none detected |
UCMR 5 sampled every public water system serving more than 3,300 people (and a sample of smaller ones) for 29 PFAS and lithium between 2023 and 2025. We show, per system, the number of samples, the detections, and the single highest value against the 2024 federal limits. A detection below the limit is information, not an alarm; a value above the limit in one sample is a measurement, not a violation. The utility's own report and a test from your tap are the two closer sources.
Filters with a certified PFAS claim · What they cost per year · The evidence library