CALIMESA, CA · Riverside County
SOUTH MESA WC Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
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)
- CA3310017
- System type
- Community Water System
- Population served
- 10,108
- Service connections
- 3,108
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedFluoride
July 1, 2014 – September 30, 2014
ResolvedMonitoring, Check/Repeat/Confirmation
—Fluoride
April 1, 2010 – December 31, 2010
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2009 – December 31, 2009
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2014 – September 30, 2014 | Maximum Contaminant Level Violation, Average | Fluoride | Health-based | Resolved |
| April 1, 2010 – December 31, 2010 | Monitoring, Check/Repeat/Confirmation | Fluoride | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 30, 2013State Formal Notice of Violation issued4 linked violations
- January 11, 2011State Violation/Reminder Notice13 linked violations
- January 11, 2010State Compliance achieved4 linked violations
Contact
ARMSTRONG, DAVID
909-795-2401
CALIMESA, CA 92320