perfluorobutanoic acid is a chemical contaminant that is a potential threat to human health.
| Saint Paul Park | 1.7 µg/L (on 9/9/2024) | MN |
|---|---|---|
| IOWA-AMERICAN WTR CO-CLINTON DISTRICT | 0.6479 µg/L (on 10/5/2023) | IA |
| Newport | 0.55 µg/L (on 4/24/2024) | MN |
| Woodbury | 0.3860 µg/L (on 2/6/2024) | MN |
| PRESCOTT WATERWORKS | 0.28 µg/L (on 7/23/2024) | WI |
| IL American - Lincoln | 0.2332 µg/L (on 11/1/2023) | IL |
| Cottage Grove | 0.2200 µg/L (on 4/23/2025) | MN |
| South Saint Paul | 0.1680 µg/L (on 11/7/2024) | MN |
| MUNICIPAL SERVICES COMMISSION | 0.1472 µg/L (on 3/8/2023) | DE |
| Lake Elmo | 0.14 µg/L (on 8/9/2023) | MN |
| Oak Park Heights | 0.13 µg/L (on 11/13/2023) | MN |
| CITY OF TRINIDAD | 0.125 µg/L (on 11/14/2023) | TX |
| Stillwater | 0.1130 µg/L (on 12/10/2024) | MN |
| Oakdale | 0.1050 µg/L (on 10/30/2024) | MN |
| Inver Grove Heights | 0.1020 µg/L (on 9/12/2023) | MN |
| CITY OF BRENHAM | 0.0985 µg/L (on 11/13/2023) | TX |
| Hastings, MN | 0.0983 µg/L (on 11/6/2024) | MN |
| CITY OF CAMERON | 0.092 µg/L (on 4/22/2025) | TX |
| North Saint Paul | 0.0851 µg/L (on 1/30/2023) | MN |
| GALESBURG | 0.085 µg/L (on 2/27/2023) | IL |
| ARTESIAN WATER COMPANY | 0.0791 µg/L (on 11/4/2024) | DE |
| ARGYLE WSC | 0.0772 µg/L (on 8/14/2023) | TX |
| CITY OF SUGAR LAND | 0.0748 µg/L (on 11/14/2023) | TX |
| White Bear Township | 0.0740 µg/L (on 12/11/2024) | MN |
| BROOKHAVEN NATIONAL LABS | 0.0728 µg/L (on 2/11/2025) | NY |
| Rosemount | 0.0703 µg/L (on 5/4/2023) | MN |
| White Bear Lake | 0.0685 µg/L (on 1/23/2025) | MN |
| JERICHO WD | 0.067 µg/L (on 10/16/2023) | NY |
| MATAWAN BOROUGH WATER DE | 0.0650 µg/L (on 4/25/2023) | NJ |
| MUSCATINE POWER & WATER | 0.06 µg/L (on 4/10/2023) | IA |
| PHOENIXVILLE WATER DEPT | 0.0573 µg/L (on 10/22/2024) | PA |
| CAERNARVON TWP AUTH | 0.0562 µg/L (on 4/14/2025) | PA |
| COLLEGE MOUND SUD | 0.0557 µg/L (on 8/15/2023) | TX |
| EXPERIMENTAL | 0.054 µg/L (on 8/20/2024) | PR |
| TELFORD BOROUGH AUTHORITY | 0.0536 µg/L (on 3/18/2025) | PA |
| LYON COUNTY WATER DISTRICT | 0.0512 µg/L (on 5/3/2023) | KY |
| CHAMPIONS MUD | 0.0504 µg/L (on 10/24/2023) | TX |
| ABINGDON | 0.050 µg/L (on 12/3/2024) | IL |
| CITY OF RICHMOND | 0.0471 µg/L (on 1/8/2025) | TX |
| MADISON WATER UTILITY | 0.0465 µg/L (on 4/4/2024) | WI |
| Lino Lakes | 0.0448 µg/L (on 2/28/2024) | MN |
| Vadnais Heights | 0.0448 µg/L (on 3/31/2025) | MN |
| CITY OF ABILENE | .0431 µg/L (on 2/21/2024) | TX |
| Coon Rapids | 0.0428 µg/L (on 10/16/2023) | MN |
| WIDEFIELD WSD | 0.0420 µg/L (on 5/24/2023) | CO |
| CITY OF HALTOM CITY | .042 µg/L (on 12/11/2023) | TX |
| HORSHAM WATER&SEWER AUTHORITY | 0.0414 µg/L (on 2/20/2024) | PA |
| EMERALD COAST UTILITIES AUTHORITY | 0.0407 µg/L (on 6/29/2023) | FL |
| SUEZ WATER DELAWARE | 0.0406 µg/L (on 10/26/2023) | DE |
| ELLSWORTH WATERWORKS | 0.039 µg/L (on 1/21/2025) | WI |