DENAIR COMMUNITY SERVICES DISTRICT
California — Community Water System — PWSID: CA5010021
System Information
| PWSID | CA5010021 |
| System Name | DENAIR COMMUNITY SERVICES 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 | Nov 17, 2025 |
Location & Contact
| State | California |
| City | DENAIR |
| ZIP Code | 95316 |
| Address | P. O. Box 217 |
| Organization | DOERKSEN, GLENN |
| Phone | 209-634-4986 |
Population & Service
| Population Served | 5,090 |
| Service Connections | 1,711 |
Drinking Water Violations (20)
This water system has 20 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Dec 1, 2014 | Dec 31, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | Total Coliform Rule |
| Dec 1, 2013 | Dec 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2013 | Total Coliform Rule |
| Dec 1, 2013 | Dec 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2013 | Total Coliform Rule |
| Sep 1, 2013 | — | ENTEROCOCCI | MR | No | No | — | TT | — | Resolved | Jul 17, 2019 | Ground Water Rule |
| Sep 1, 2013 | — | ENTEROCOCCI | MR | No | No | — | TT | — | Resolved | Jul 17, 2019 | Ground Water Rule |
| Mar 1, 2001 | Mar 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | Total Coliform Rule |
| Mar 1, 2001 | Mar 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | Total Coliform Rule |
| Apr 1, 1994 | Apr 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Apr 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1994 | Total Coliform Rule |
| Oct 1, 1988 | Oct 31, 1988 | Other | No | No | — | — | — | Archived | Oct 31, 1988 | Miscellaneous Other Rules | |
| Oct 1, 1988 | Oct 31, 1988 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Archived | Oct 31, 1988 | Inorganic Chemicals |
| Oct 1, 1988 | Oct 31, 1988 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Oct 31, 1988 | Nitrate Rule |
| Oct 1, 1988 | Oct 31, 1988 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Archived | Oct 31, 1988 | Arsenic Rule |
| Oct 1, 1988 | Oct 31, 1988 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Archived | Oct 31, 1988 | Inorganic Chemicals |
| Aug 1, 1987 | Aug 31, 1987 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Archived | Aug 31, 1987 | Inorganic Chemicals |
| Aug 1, 1987 | Aug 31, 1987 | Other | No | No | — | — | — | Archived | Aug 31, 1987 | Miscellaneous Other Rules | |
| Aug 1, 1987 | Aug 31, 1987 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Archived | Aug 31, 1987 | Arsenic Rule |
| Aug 1, 1987 | Aug 31, 1987 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Archived | Aug 31, 1987 | Inorganic Chemicals |
| Aug 1, 1987 | Aug 31, 1987 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Archived | Aug 31, 1987 | Nitrate Rule |
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.