WELLTON TOWN OF
PWS ID: AZ0414022 · WELLTON, Arizona 85356
Population Served
3,000
Total Violations
929
Health-Based Violations
221
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,573
- County
- Yuma
- School/Daycare
- No
- MCL Violations
- 148
- Monitoring Violations
- 542
- Treatment Tech Violations
- 73
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 148 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | MR | 80 | 2025 |
| Surface Water Treatment Rule | MR | 72 | 2025 |
| CARBON, TOTAL | TT | 46 | 2025 |
| TTHM | MR | 43 | 2025 |
| Coliform (TCR) | MR | 42 | 2016 |
| Public Notice | Other | 41 | 2025 |
| Chlorine | MR | 33 | 2023 |
| Revised Total Coliform Rule | RPT | 27 | 2025 |
| Revised Total Coliform Rule | MON | 23 | 2021 |
| Interim Enhanced Surface Water Treatment Rule | TT | 23 | 2025 |
| CARBON, TOTAL | MR | 22 | 2023 |
| Consumer Confidence Rule | Other | 21 | 2022 |
| Arsenic | MR | 21 | 2025 |
| Lead and Copper Rule | MR | 19 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 18 | 2025 |
| Nitrate | MR | 14 | 2006 |
| E. COLI | MR | 14 | 2018 |
| Selenium | MR | 8 | 1999 |
| Chromium | MR | 8 | 1999 |
| Fluoride | MR | 8 | 1999 |
| Mercury | MR | 8 | 1999 |
| Cadmium | MR | 8 | 1999 |
| Barium | MR | 7 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 5 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| 2,4-D | MR | 3 | 1998 |
| Endrin | MR | 3 | 1998 |
| Methoxychlor | MR | 3 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.