JAMESTOWN, CA · San Diego County
MCCAIN VALLEY CC #21 Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of April 26, 2021. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in San Diego County, CA.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA3710801
- System type
- Community Water System
- Population served
- 130
- Service connections
- 4
- Ownership
- state government
- Water source
- groundwater (wells)
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 2011 – March 31, 2011
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 2011 – February 28, 2011
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2010 – July 22, 2011
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2008 – December 31, 2008
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2008 – June 30, 2008
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2008 – March 31, 2008
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 1991 – May 31, 1991
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 2011 – March 31, 2011 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 2011 – February 28, 2011 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 2010 – July 22, 2011 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| October 1, 2008 – December 31, 2008 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| April 1, 2008 – June 30, 2008 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2008 – March 31, 2008 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| May 1, 1991 – May 31, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 14, 2011State Compliance achieved19 linked violations
- April 26, 2011State Administrative/Compliance Order without penalty issued24 linked violations
- November 20, 1995State Formal Notice of Violation issued19 linked violations
Last known contact on file (system is inactive)
BORLA, JOE
209-984-5291
JAMESTOWN, CA 95327