CS MOHAWK UTILITY COMPANY
PWS ID: AZ0414030 · DES PERES, Arizona 63131
Population Served
243
Total Violations
1,140
Health-Based Violations
41
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 135
- County
- Yuma
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 889
- Treatment Tech Violations
- 33
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 194 | 2024 |
| Chlorine | MR | 165 | 2023 |
| Coliform (TCR) | MR | 146 | 2015 |
| Interim Enhanced Surface Water Treatment Rule | MR | 140 | 2024 |
| Public Notice | Other | 61 | 2024 |
| Consumer Confidence Rule | Other | 53 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 42 | 2024 |
| TTHM | MR | 39 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | TT | 33 | 2025 |
| Lead and Copper Rule | MR | 23 | 2025 |
| Revised Total Coliform Rule | RPT | 10 | 2024 |
| Nitrate | MR | 10 | 2004 |
| Revised Total Coliform Rule | MON | 9 | 2018 |
| E. COLI | MR | 8 | 2018 |
| Revised Total Coliform Rule | MCL | 8 | 2024 |
| Arsenic | MR | 7 | 1999 |
| Barium | MR | 7 | 1999 |
| Cadmium | MR | 7 | 1999 |
| Fluoride | MR | 7 | 1999 |
| Chromium | MR | 7 | 1999 |
| Mercury | MR | 7 | 1999 |
| Selenium | MR | 7 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1989 |
| CYANIDE | MR | 2 | 1999 |
| Antimony, Total | MR | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1999 |
| Thallium, Total | MR | 2 | 1999 |
| DICHLOROMETHANE | MR | 2 | 2001 |
| o-Dichlorobenzene | MR | 2 | 2001 |
| p-Dichlorobenzene | MR | 2 | 2001 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.