LAYTON CITY WATER SYSTEM
PWS ID: UTAH06018 · LAYTON, Utah 84041
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
82,000
Total Violations
89
Health-Based Violations
1
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 20,976
- County
- Davis
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | RPT | 6 | 2017 |
| Nitrate | MR | 3 | 2010 |
| Combined Uranium | MR | 3 | 2008 |
| Combined Radium (-226 and -228) | MR | 3 | 2008 |
| Radium-226 | MR | 3 | 2008 |
| Radium-228 | MR | 3 | 2008 |
| Fluoride | MR | 3 | 2014 |
| Lead and Copper Rule | MR | 3 | 2011 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 2008 |
| Coliform (TCR) | MR | 2 | 2000 |
| Asbestos | MR | 1 | 1995 |
| Endrin | MR | 1 | 2001 |
| BHC-GAMMA | MR | 1 | 2001 |
| Methoxychlor | MR | 1 | 2001 |
| Toxaphene | MR | 1 | 2001 |
| 2,4-D | MR | 1 | 2001 |
| LASSO | MR | 1 | 2001 |
| Aldicarb | MR | 1 | 2001 |
| Atrazine | MR | 1 | 2001 |
| Chlordane | MR | 1 | 2001 |
| Heptachlor epoxide | MR | 1 | 2001 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2001 |
| Pentachlorophenol | MR | 1 | 2001 |
| Benzo(a)pyrene | MR | 1 | 2001 |
| Dalapon | MR | 1 | 2001 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2001 |
| Dinoseb | MR | 1 | 2001 |
| HEXACHLOROBENZENE | MR | 1 | 2001 |
| OXAMYL | MR | 1 | 2001 |
| Simazine | MR | 1 | 2001 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 360 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 8/21/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFUnA | 8/21/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 8/21/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 8/21/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 8/21/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHxS | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 8/21/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFBS | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMBA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/21/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 8/21/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 8/21/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 8/21/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/21/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 8/21/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFMPA | 8/21/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 8/21/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 7/15/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 7/15/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| HFPO-DA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NEtFOSAA | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 7/15/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMBA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 7/15/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 7/15/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFTrDA | 7/15/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFOA | 7/15/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 7/15/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.