This page summarizes EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5, 2023–2025) drinking-water monitoring records linked to ZIP codes in Utah, as processed for the PFAS Estimator national dataset. Data updated: July 2026.
| Compound | Applicable threshold | ZIP codes detected | At/above threshold | Mean detected | Maximum detected |
|---|---|---|---|---|---|
| PFOA | 0.004 µg/L (MCL) | 5 (4.5% of state) | 5 (100.0%) — all detections at/above limit by construction | 0.0043 µg/L | 0.0048 µg/L |
| PFOS | 0.004 µg/L (MCL) | 32 (29.1% of state) | 32 (100.0%) — all detections at/above limit by construction | 0.0077 µg/L | 0.026 µg/L |
| PFHxS | 0.01 µg/L (MCL) | 32 (29.1% of state) | 31 (96.9% of detected) | 0.0177 µg/L | 0.022 µg/L |
| PFBS | 2.0 µg/L (HI reference) | 15 (13.6% of state) | not calculated¹ | 0.0054 µg/L | 0.017 µg/L |
| Lithium | 7.36 µg/L (reference, not a regulatory limit) | 110 (100.0% of state) | 110 (100.0%) at/above reference | 66.5491 µg/L | 960.0 µg/L |
| PFPeA | — (no federal limit) | 39 (35.5% of state) | — | 0.0063 µg/L | 0.014 µg/L |
| PFBA | — (no federal limit) | 6 (5.5% of state) | — | 0.009 µg/L | 0.015 µg/L |
| PFHpA | — (no federal limit) | 3 (2.7% of state) | — | 0.0032 µg/L | 0.0032 µg/L |
| 6:2 FTS | — (no federal limit) | 2 (1.8% of state) | — | 0.0425 µg/L | 0.055 µg/L |
110 ZIP codes with at least one recorded PFAS detection. Click a ZIP code to view its full compound-level results.
| ZIP code | Compounds detected | At/above threshold |
|---|---|---|
| 84005 | 1 | No |
| 84010 | 5 | Yes (2) |
| 84014 | 2 | No |
| 84015 | 2 | No |
| 84020 | 1 | No |
| 84025 | 2 | No |
| 84029 | 1 | No |
| 84032 | 1 | No |
| 84037 | 1 | No |
| 84040 | 1 | No |
| 84041 | 1 | No |
| 84043 | 1 | No |
| 84044 | 4 | Yes (2) |
| 84045 | 1 | No |
| 84047 | 4 | Yes (2) |
| 84049 | 1 | No |
| 84050 | 1 | No |
| 84054 | 5 | Yes (2) |
| 84056 | 1 | No |
| 84057 | 1 | No |
| 84058 | 1 | No |
| 84059 | 1 | No |
| 84060 | 5 | Yes (2) |
| 84065 | 1 | No |
| 84066 | 1 | No |
| 84067 | 1 | No |
| 84068 | 5 | Yes (2) |
| 84070 | 1 | No |
| 84074 | 1 | No |
| 84075 | 3 | No |
| 84081 | 3 | No |
| 84084 | 3 | No |
| 84087 | 4 | Yes (1) |
| 84088 | 3 | No |
| 84090 | 1 | No |
| 84092 | 4 | Yes (2) |
| 84093 | 4 | Yes (2) |
| 84094 | 1 | No |
| 84095 | 1 | No |
| 84096 | 2 | No |
| 84097 | 1 | No |
| 84098 | 3 | No |
| 84101 | 4 | Yes (2) |
| 84102 | 4 | Yes (2) |
| 84103 | 4 | Yes (2) |
| 84104 | 4 | Yes (2) |
| 84105 | 4 | Yes (2) |
| 84106 | 4 | Yes (2) |
| 84107 | 8 | Yes (3) |
| 84108 | 4 | Yes (2) |
| 84109 | 4 | Yes (2) |
| 84111 | 4 | Yes (2) |
| 84112 | 4 | Yes (2) |
| 84113 | 4 | Yes (2) |
| 84115 | 5 | Yes (2) |
| 84116 | 4 | Yes (2) |
| 84117 | 8 | Yes (3) |
| 84118 | 1 | No |
| 84119 | 4 | Yes (2) |
| 84120 | 4 | Yes (2) |
| 84121 | 4 | Yes (2) |
| 84123 | 7 | Yes (1) |
| 84124 | 4 | Yes (2) |
| 84128 | 4 | Yes (2) |
| 84129 | 1 | No |
| 84138 | 4 | Yes (2) |
| 84143 | 4 | Yes (2) |
| 84148 | 1 | No |
| 84150 | 4 | Yes (2) |
| 84302 | 2 | No |
| 84315 | 1 | No |
| 84318 | 1 | No |
| 84321 | 1 | No |
| 84335 | 1 | No |
| 84337 | 1 | No |
| 84339 | 1 | No |
| 84341 | 1 | No |
| 84401 | 1 | No |
| 84404 | 1 | No |
| 84405 | 1 | No |
| 84501 | 1 | No |
| 84526 | 1 | No |
| 84529 | 1 | No |
| 84542 | 1 | No |
| 84601 | 1 | No |
| 84604 | 1 | No |
| 84606 | 1 | No |
| 84624 | 1 | No |
| 84627 | 1 | No |
| 84634 | 1 | No |
| 84642 | 1 | No |
| 84647 | 1 | No |
| 84648 | 1 | No |
| 84651 | 1 | No |
| 84655 | 1 | No |
| 84660 | 1 | No |
| 84663 | 1 | No |
| 84664 | 1 | No |
| 84701 | 1 | No |
| 84720 | 1 | No |
| 84721 | 1 | No |
| 84733 | 1 | No |
| 84737 | 1 | No |
| 84738 | 1 | No |
| 84745 | 1 | No |
| 84765 | 1 | No |
| 84770 | 1 | No |
| 84780 | 1 | No |
| 84784 | 5 | Yes (2) |
| 84790 | 1 | No |
Results are based on EPA UCMR 5 monitoring data (2023–2025), linked to ZIP codes via Public Water System Identifier. Non-detections are not present in this analytic dataset. For each compound and ZIP code, the highest observed concentration across the monitoring period is retained; this characterizes the upper bound of observed drinking-water concentrations, not a long-term average or an individual exposure estimate. A single water system may serve multiple ZIP codes, so the same monitoring record can appear for more than one ZIP in this table. ZIP-code assignment reflects water-system service area geography and does not establish individual household exposure. Private wells are not represented unless served by a monitored public water system. PFOA and PFOS are reported by detection prevalence because the UCMR 5 reporting limit equals their federal MCL. A full PFBS Hazard Index is not calculated because co-located, same-event multi-compound readings are not retained in this dataset. Lithium has no federal Maximum Contaminant Level; 7.36 µg/L is an evidence-based reference concentration from a prospective cohort study, not a regulatory threshold.
PFAS Estimator homepage & national ZIP lookup
Full national methodology, limitations, and dataset documentation
All states & territories index