SAN JUAN BAUTISTA, CA · San Benito County
LOS MADRONES MWC Water System
Consumer Confidence Report status
LOS MADRONES MWC must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for LOS MADRONES MWC.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
- CA3500578
- System type
- Community Water System
- Population served
- 36
- Service connections
- 14
- Ownership
- privately owned
- Water source
- groundwater (wells)
LOS MADRONES MWC is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 36 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 2004 and 2006, all of which EPA lists as closed. Nothing has been added since 2006.
All 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—TTHM
January 1, 2006 – December 31, 2006
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2004 – March 31, 2004
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2006 – December 31, 2006 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2004 – March 31, 2004 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- August 16, 2017State Compliance achieved18 linked violations
- December 31, 2007Federal Compliance achieved1 linked violation
- October 18, 2007State Administrative/Compliance Order without penalty issued7 linked violations
- April 3, 2006State Compliance achieved15 linked violations
- October 14, 1998State Violation/Reminder Notice8 linked violations
Common questions
Is LOS MADRONES MWC required to publish a Consumer Confidence Report?
- Yes. LOS MADRONES MWC is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is LOS MADRONES MWC’s next Consumer Confidence Report due?
- LOS MADRONES MWC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LOS MADRONES MWC have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LOS MADRONES MWC.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
O'MALLEY SOLIS, JESSIE
408-483-0857
SAN JUAN BAUTISTA, CA 95045