KATHERINE RESORTS WATER COMPANY
PWS ID: AZ0408018 · LA JOLLA, Arizona 92037
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
58
Total Violations
296
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 44
- County
- Mohave
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 211
- Treatment Tech Violations
- 6
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 86 | 2025 |
| Consumer Confidence Rule | Other | 47 | 2020 |
| Total Haloacetic Acids (HAA5) | MR | 25 | 2025 |
| TTHM | MR | 24 | 2025 |
| Di(2-ethylhexyl) phthalate | MR | 9 | 2020 |
| Lead and Copper Rule | MR | 9 | 2025 |
| Coliform (TCR) | MR | 6 | 2014 |
| Public Notice | Other | 6 | 2024 |
| Groundwater Rule | TT | 6 | 2023 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2022 |
| Hexachlorocyclopentadiene | MR | 3 | 2022 |
| Atrazine | MR | 3 | 2022 |
| Simazine | MR | 3 | 2022 |
| Benzo(a)pyrene | MR | 3 | 2022 |
| HEXACHLOROBENZENE | MR | 3 | 2022 |
| Nitrate | MR | 2 | 1998 |
| Revised Total Coliform Rule | MON | 2 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1988 |
| Revised Total Coliform Rule | RPT | 2 | 2023 |
| Carbofuran | MR | 1 | 1998 |
| 2,4-D | MR | 1 | 1998 |
| 2,4,5-TP | MR | 1 | 1998 |
| Pentachlorophenol | MR | 1 | 1998 |
| Chlordane | MR | 1 | 1998 |
| BHC-GAMMA | MR | 1 | 1998 |
| Methoxychlor | MR | 1 | 1998 |
| Diquat | MR | 1 | 1998 |
| Endothall | MR | 1 | 1998 |
| Fluoride | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMPA | 4/4/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeS | 4/4/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 4/4/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFOS | 4/4/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 4/4/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 4/4/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 4/4/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 4/4/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 4/4/2023 | 210.0000 µg/L | 9 µg/L | Detected |
| PFDA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 4/4/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/4/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 4/4/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOA | 4/4/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 4/4/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 11/2/2023 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 11/2/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 11/2/2023 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 11/2/2023 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHxA | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 10/3/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 10/3/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 10/3/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 10/3/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 10/3/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 10/3/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 10/3/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 10/3/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 10/3/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 10/3/2023 | <0.002 µg/L | 0.002 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.