KEYES COMMUNITY SERVICES DIST.
California — Community Water System — PWSID: CA5010009
System Information
| PWSID | CA5010009 |
| System Name | KEYES COMMUNITY SERVICES DIST. |
| 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 | KEYES |
| ZIP Code | 95328 |
| Address | P.O. BOX 699 |
| Organization | JONES, MICHAEL |
| Phone | 209-668-8341 |
Population & Service
| Population Served | 5,672 |
| Service Connections | 1,477 |
Drinking Water Violations (114)
This water system has 114 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2020 | Mar 31, 2020 | Arsenic | MCL | Yes | No | 10.31 UG/L | 0.010 mg/L | 10 | Resolved | Mar 31, 2020 | Arsenic Rule |
| Jan 1, 2020 | Mar 31, 2020 | Arsenic | MCL | Yes | No | 10.31 UG/L | 0.010 mg/L | 10 | Resolved | Mar 31, 2020 | Arsenic Rule |
| Oct 1, 2019 | Dec 31, 2019 | Arsenic | MCL | Yes | No | 15 UG/L | 0.010 mg/L | 10 | Resolved | Dec 31, 2019 | Arsenic Rule |
| Oct 1, 2019 | Dec 31, 2019 | Arsenic | MCL | Yes | No | 15 UG/L | 0.010 mg/L | 10 | Resolved | Dec 31, 2019 | Arsenic Rule |
| Jul 1, 2019 | Sep 30, 2019 | Arsenic | MCL | Yes | No | 19 UG/L | 0.010 mg/L | 10 | Resolved | Sep 30, 2019 | Arsenic Rule |
| Jul 1, 2019 | Sep 30, 2019 | Arsenic | MCL | Yes | No | 19 UG/L | 0.010 mg/L | 10 | Resolved | Sep 30, 2019 | Arsenic Rule |
| Apr 1, 2019 | Jun 30, 2019 | Arsenic | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2019 | Arsenic Rule |
| Apr 1, 2019 | Jun 30, 2019 | Arsenic | MCL | Yes | No | .016 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2019 | Arsenic Rule |
| Jan 1, 2019 | Mar 31, 2019 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2019 | Arsenic Rule |
| Jan 1, 2019 | Mar 31, 2019 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2019 | Arsenic Rule |
| Sep 1, 2018 | Nov 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Nov 30, 2018 | Arsenic Rule |
| Sep 1, 2018 | Nov 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Nov 30, 2018 | Arsenic Rule |
| Jul 1, 2018 | Sep 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | Arsenic Rule |
| Jul 1, 2018 | Sep 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | Arsenic Rule |
| Apr 1, 2018 | Jun 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | Arsenic Rule |
| Apr 1, 2018 | Jun 30, 2018 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | Arsenic Rule |
| Jan 1, 2018 | Mar 31, 2018 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2018 | Arsenic Rule |
| Jan 1, 2018 | Mar 31, 2018 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2018 | Arsenic Rule |
| Oct 1, 2017 | Dec 31, 2017 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2017 | Arsenic Rule |
| Oct 1, 2017 | Dec 31, 2017 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2017 | Arsenic Rule |
| Jul 1, 2017 | Sep 30, 2017 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2017 | Arsenic Rule |
| Jul 1, 2017 | Sep 30, 2017 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2017 | Arsenic Rule |
| Apr 1, 2017 | Jun 30, 2017 | Arsenic | MCL | Yes | No | .0155 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2017 | Arsenic Rule |
| Apr 1, 2017 | Jun 30, 2017 | Arsenic | MCL | Yes | No | .0155 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2017 | Arsenic Rule |
| Jan 1, 2017 | Mar 31, 2017 | Arsenic | MCL | Yes | No | .0165 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2017 | Arsenic Rule |
| Jan 1, 2017 | Mar 31, 2017 | Arsenic | MCL | Yes | No | .0165 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2017 | Arsenic Rule |
| Oct 1, 2016 | Dec 31, 2016 | Arsenic | MCL | Yes | No | .0157 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2016 | Arsenic Rule |
| Oct 1, 2016 | Dec 31, 2016 | Arsenic | MCL | Yes | No | .0157 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2016 | Arsenic Rule |
| Jul 1, 2016 | Sep 30, 2016 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2016 | Arsenic Rule |
| Jul 1, 2016 | Sep 30, 2016 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2016 | Arsenic Rule |
| Apr 1, 2016 | Jun 30, 2016 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2016 | Arsenic Rule |
| Apr 1, 2016 | Jun 30, 2016 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2016 | Arsenic Rule |
| Jan 1, 2016 | Mar 31, 2016 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2016 | Arsenic Rule |
| Jan 1, 2016 | Mar 31, 2016 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2016 | Arsenic Rule |
| Oct 1, 2015 | Dec 31, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2015 | Arsenic Rule |
| Oct 1, 2015 | Dec 31, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2015 | Arsenic Rule |
| Jul 1, 2015 | Sep 30, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2015 | Arsenic Rule |
| Jul 1, 2015 | Sep 30, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2015 | Arsenic Rule |
| Apr 1, 2015 | Jun 30, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2015 | Arsenic Rule |
| Apr 1, 2015 | Jun 30, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2015 | Arsenic Rule |
| Jan 1, 2015 | Mar 31, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2015 | Arsenic Rule |
| Jan 1, 2015 | Mar 31, 2015 | Arsenic | MCL | Yes | No | .014 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2015 | Arsenic Rule |
| Oct 1, 2014 | Dec 31, 2014 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2014 | Arsenic Rule |
| Oct 1, 2014 | Dec 31, 2014 | Arsenic | MCL | Yes | No | .0145 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2014 | Arsenic Rule |
| Jul 1, 2014 | Sep 30, 2014 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2014 | Arsenic Rule |
| Jul 1, 2014 | Sep 30, 2014 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2014 | Arsenic Rule |
| Apr 1, 2014 | Jun 30, 2014 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2014 | Arsenic Rule |
| Apr 1, 2014 | Jun 30, 2014 | Arsenic | MCL | Yes | No | .015 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2014 | Arsenic Rule |
| Jan 1, 2014 | Mar 31, 2014 | Arsenic | MCL | Yes | No | .0135 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2014 | Arsenic Rule |
| Jan 1, 2014 | Mar 31, 2014 | Arsenic | MCL | Yes | No | .0135 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2014 | Arsenic 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.