CS LOS CERROS WATER COMPANY INC
PWS ID: AZ0410128 · DES PERES, Arizona 63131
Population Served
2,613
Total Violations
202
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 902
- County
- Pima
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 182
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 28 | 2015 |
| Chlorine | MR | 17 | 2019 |
| Nitrate | MR | 15 | 2005 |
| Gross Alpha, Excl. Radon and U | MR | 14 | 2009 |
| Radium-228 | MR | 13 | 2009 |
| Combined Radium (-226 and -228) | MR | 13 | 2009 |
| Radium-226 | MR | 13 | 2009 |
| Combined Uranium | MR | 12 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2023 |
| TTHM | MR | 10 | 2023 |
| Consumer Confidence Rule | Other | 7 | 2012 |
| Lead and Copper Rule | MR | 4 | 2005 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 2000 |
| ETHYLENE DIBROMIDE | MR | 2 | 2000 |
| Revised Total Coliform Rule | MON | 2 | 2017 |
| Revised Total Coliform Rule | RPT | 2 | 2019 |
| Simazine | MR | 2 | 2000 |
| DICHLOROMETHANE | MR | 1 | 1987 |
| Cadmium | MR | 1 | 1988 |
| Trichloroethylene | MR | 1 | 1987 |
| Carbon tetrachloride | MR | 1 | 1987 |
| p-Dichlorobenzene | MR | 1 | 1987 |
| 1,1,1-Trichloroethane | MR | 1 | 1987 |
| Benzene | MR | 1 | 1987 |
| Ethylbenzene | MR | 1 | 1987 |
| Tetrachloroethylene | MR | 1 | 1987 |
| 1,1,2-Trichloroethane | MR | 1 | 1987 |
| Barium | MR | 1 | 1988 |
| 1,2-Dichloroethane | MR | 1 | 1987 |
| 1,1-Dichloroethylene | MR | 1 | 1987 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.