LOS OJOS MDWCA
PWS ID: NM3502921 · LOS OJOS, New Mexico 87551
Population Served
237
Total Violations
373
Health-Based Violations
67
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 83
- County
- Rio Arriba
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 209
- Treatment Tech Violations
- 54
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 69 | 2020 |
| Groundwater Rule | TT | 54 | 2023 |
| Public Notice | Other | 43 | 2019 |
| Consumer Confidence Rule | Other | 24 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 24 | 2018 |
| TTHM | MR | 24 | 2018 |
| Coliform (TCR) | MR | 15 | 2001 |
| Coliform (TCR) | MCL | 13 | 1998 |
| Lead and Copper Rule | MR | 10 | 2023 |
| Groundwater Rule | Other | 8 | 2022 |
| Revised Total Coliform Rule | Other | 5 | 2016 |
| Chlorine | MR | 3 | 2012 |
| Nitrate | MR | 1 | 1981 |
| CYANIDE | MR | 1 | 2005 |
| Fluoride | MR | 1 | 2005 |
| Endrin | MR | 1 | 2005 |
| Toxaphene | MR | 1 | 2005 |
| Dalapon | MR | 1 | 2005 |
| Diquat | MR | 1 | 2005 |
| Endothall | MR | 1 | 2005 |
| Glyphosate | MR | 1 | 2005 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2005 |
| OXAMYL | MR | 1 | 2005 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2005 |
| Hexachlorocyclopentadiene | MR | 1 | 2005 |
| LASSO | MR | 1 | 2005 |
| Heptachlor | MR | 1 | 2005 |
| Heptachlor epoxide | MR | 1 | 2005 |
| 2,4-D | MR | 1 | 2005 |
| 2,4,5-TP | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.