Mesa Grande - Black Canyon
PWS ID: 090605132 · Santa Ysabel, 09 92070
Population Served
81
Total Violations
184
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 25
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 145
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 8 | 2016 |
| Coliform (TCR) | MR | 7 | 2009 |
| Consumer Confidence Rule | Other | 5 | 2006 |
| Trichloroethylene | MR | 3 | 2004 |
| Arsenic | MR | 2 | 2004 |
| Barium | MR | 2 | 2004 |
| CYANIDE | MR | 2 | 2004 |
| Mercury | MR | 2 | 2004 |
| Selenium | MR | 2 | 2004 |
| Beryllium, Total | MR | 2 | 2004 |
| Asbestos | MR | 2 | 2004 |
| Endrin | MR | 2 | 2004 |
| BHC-GAMMA | MR | 2 | 2004 |
| Toxaphene | MR | 2 | 2004 |
| Dalapon | MR | 2 | 2004 |
| Diquat | MR | 2 | 2004 |
| Endothall | MR | 2 | 2004 |
| Glyphosate | MR | 2 | 2004 |
| Di(2-ethylhexyl) adipate | MR | 2 | 2004 |
| OXAMYL | MR | 2 | 2004 |
| Simazine | MR | 2 | 2004 |
| Di(2-ethylhexyl) phthalate | MR | 2 | 2004 |
| Picloram | MR | 2 | 2004 |
| Dinoseb | MR | 2 | 2004 |
| Hexachlorocyclopentadiene | MR | 2 | 2004 |
| Carbofuran | MR | 2 | 2004 |
| Atrazine | MR | 2 | 2004 |
| LASSO | MR | 2 | 2004 |
| 2,3,7,8-TCDD | MR | 2 | 2004 |
| Heptachlor | MR | 2 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.