SAN MATEO MDWCA
PWS ID: NM3525733 · MILAN, New Mexico 87021
Population Served
182
Total Violations
135
Health-Based Violations
49
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 55
- County
- Cibola
- School/Daycare
- No
- MCL Violations
- 39
- Monitoring Violations
- 20
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 38 | 2015 |
| Coliform (TCR) | Other | 26 | 2003 |
| Consumer Confidence Rule | Other | 17 | 2025 |
| Coliform (TCR) | MR | 13 | 2003 |
| Groundwater Rule | TT | 10 | 2018 |
| Revised Total Coliform Rule | Other | 4 | 2016 |
| Lead and Copper Rule | MR | 4 | 2021 |
| E. COLI | MR | 3 | 2023 |
| Public Notice | Other | 2 | 2019 |
| Fluoride | MCL | 1 | 1984 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.