ARIVACA TOWNSITE WATER COOP
PWS ID: AZ0410002 · ARIVACA, Arizona 85601
Population Served
150
Total Violations
151
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 165
- County
- Pima
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 129
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 47 | 2017 |
| Coliform (TCR) | MR | 25 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2017 |
| TTHM | MR | 8 | 2017 |
| Consumer Confidence Rule | Other | 7 | 2009 |
| Nitrate | MR | 4 | 2004 |
| Coliform (TCR) | MCL | 4 | 2004 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1988 |
| Toluene | MR | 3 | 2007 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2007 |
| Xylenes, Total | MR | 1 | 2007 |
| DICHLOROMETHANE | MR | 1 | 2007 |
| Vinyl chloride | MR | 1 | 2007 |
| Carbon tetrachloride | MR | 1 | 2007 |
| trans-1,2-Dichloroethylene | MR | 1 | 2007 |
| 1,2-Dichloroethane | MR | 1 | 2007 |
| 1,2-Dichloropropane | MR | 1 | 2007 |
| 1,1,2-Trichloroethane | MR | 1 | 2007 |
| Tetrachloroethylene | MR | 1 | 2007 |
| CHLOROBENZENE | MR | 1 | 2007 |
| Benzene | MR | 1 | 2007 |
| Styrene | MR | 1 | 2007 |
| Radium-228 | MR | 1 | 2004 |
| Radium-226 | MR | 1 | 2004 |
| Combined Radium (-226 and -228) | MR | 1 | 2004 |
| Lead and Copper Rule | MR | 1 | 2009 |
| Fluoride | MR | 1 | 1988 |
| Selenium | MR | 1 | 1988 |
| Mercury | MR | 1 | 1988 |
| Barium | MR | 1 | 1988 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.