Mariano Lake Community School BIA
PWS ID: NN3534012 · Crownpoint, Navajo Nation 87313
Population Served
160
Total Violations
31
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Federal
- Connections
- 19
- School/Daycare
- Yes
- MCL Violations
- 1
- Monitoring Violations
- 14
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 10 | 2015 |
| Consumer Confidence Rule | Other | 6 | 2012 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 3 | 2013 |
| Revised Total Coliform Rule | Other | 3 | 2016 |
| Revised Total Coliform Rule | RPT | 2 | 2023 |
| Revised Total Coliform Rule | MCL | 1 | 2023 |
| Revised Total Coliform Rule | MON | 1 | 2025 |
| Public Notice | Other | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.