PFAS · Utah
PFAS in Utah drinking water: EPA’s final survey results
EPA’s national PFAS survey (UCMR 5) tested 127 of the community water systems that serve homes in Utah. 16 found at least one of 29 PFAS above the laboratory reporting level, and 2 had a PFOA or PFOS sampling-location yearly average at or above EPA’s 4.0 ppt limit. Samples were collected from January 2023 to June 2026.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
PFBS was the compound Utah community systems found most often: 10 of 127 tested systems measured it above the reporting level. Across the country, 35% of surveyed community systems found at least one PFAS; in Utah the share is 13%. The largest Utah system with a detection, Salt Lake City Water System, serves 383,612 people and found 4 of the 29 compounds.
Which PFAS were found most often in Utah
Each row counts the Utah community water systems where that compound was measured above the reporting level at least once. A detection is a measurement, not a violation: most of these compounds have no federal limit.
| Compound | Systems where found | Systems tested | Share |
|---|---|---|---|
| PFBS | 10 | 127 | 8% |
| PFPeA | 9 | 127 | 7% |
| PFHxA | 8 | 127 | 6% |
| PFBA | 4 | 127 | 3% |
| PFHxS | 4 | 127 | 3% |
| PFOS | 3 | 127 | 2% |
| 6:2 FTS | 2 | 127 | 2% |
| PFOA | 2 | 127 | 2% |
| PFHpA | 1 | 127 | 1% |
| PFPeS | 1 | 127 | 1% |
Utah systems with the most PFAS found
The 10 surveyed community water systems that found the most different PFAS, with PFOA and PFOS compared to EPA’s 4.0 ppt limits on the yearly average at the highest sampling location. Larger systems come first when counts tie.
| Water system | People served | PFAS found (of 29) | PFOA | PFOS |
|---|---|---|---|---|
| Murray City Water System UTAH18024 | 38,723 | 7 | 2.0 ppt below the MCL | — not detected above the reporting level |
| Hildale - Colorado City UTAH27006 | 6,100 | 6 | — not detected above the reporting level | 13.0 ppt at or above the MCL |
| Park City Water System UTAH22011 | 8,875 | 5 | 4.3 ppt at or above the MCL | 4.6 ppt at or above the MCL |
| Salt Lake City Water System UTAH18026 | 383,612 | 4 | — not detected above the reporting level | 0.0 ppt below the MCL |
| South Davis Water District UTAH06009 | 10,565 | 4 | — not detected above the reporting level | — not detected above the reporting level |
| West Jordan City Water System UTAH18020 | 117,025 | 3 | — not detected above the reporting level | — not detected above the reporting level |
| Mountain Regional Water Ssd UTAH22137 | 8,245 | 3 | — not detected above the reporting level | — not detected above the reporting level |
| Herriman City Municipal Water Department UTAH18157 | 60,000 | 2 | — not detected above the reporting level | — not detected above the reporting level |
| Bountiful City Water System UTAH06015 | 37,500 | 2 | — not detected above the reporting level | — not detected above the reporting level |
| Syracuse City Water System UTAH06012 | 35,561 | 2 | — not detected above the reporting level | — not detected above the reporting level |
Counties with the most systems that found PFAS
- Davis County 7 of 18 surveyed systems
- Salt Lake County 5 of 23 surveyed systems
- Summit County 2 of 4 surveyed systems
- Washington County 1 of 11 surveyed systems
- Box Elder County 1 of 4 surveyed systems