COTTONWOOD WATER DISTRICT
California - Community Water System - PWSID: CA4510007
System Information
| PWSID | CA4510007 |
| System Name | COTTONWOOD WATER DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | COTTONWOOD |
| ZIP Code | 96022 |
| Address | P.O. Box 2130 |
| Organization | HOLLMER, JOHN |
| Phone | 530-347-3472 |
Population & Service
| Population Served | 3,316 |
| Service Connections | 1,235 |
Drinking Water Violations (12)
This water system has 12 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | - | MR | No | No | - | TT | - | Addressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Mar 12, 2026 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Mar 12, 2026 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Mar 12, 2026 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Mar 12, 2026 | - | |
| Aug 1, 2018 | - | TT | Yes | No | - | - | - | Resolved | Sep 26, 2018 | - | |
| May 1, 2004 | May 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2004 | - | |
| May 1, 2004 | May 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2004 | - | |
| Dec 1, 1995 | Jan 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 1996 | - | |
| Dec 1, 1995 | Jan 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 1996 | - | |
| Sep 1, 1994 | Oct 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1994 | - | |
| Sep 1, 1994 | Oct 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1994 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.