APPLE VALLEY, CA · San Bernardino County
MARIANA RANCHOS CWD Water System
Consumer Confidence Report status
MARIANA RANCHOS CWD 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 MARIANA RANCHOS CWD.
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)
- CA3610030
- System type
- Community Water System
- Population served
- 1,502
- Service connections
- 455
- Ownership
- local government
- Water source
- groundwater (wells)
MARIANA RANCHOS CWD is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 1,502 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 2008, all of which EPA lists as closed. Nothing has been added since 2008.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2008 – October 31, 2008 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- June 29, 2005State Compliance achieved1 linked violation
- October 31, 2003State Compliance achieved2 linked violations
- July 5, 1996State Compliance achieved1 linked violation
- June 20, 1996State Formal Notice of Violation issued1 linked violation
- September 14, 1994State Formal Notice of Violation issued2 linked violations
Common questions
Is MARIANA RANCHOS CWD required to publish a Consumer Confidence Report?
- Yes. MARIANA RANCHOS CWD 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 MARIANA RANCHOS CWD’s next Consumer Confidence Report due?
- MARIANA RANCHOS CWD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MARIANA RANCHOS CWD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MARIANA RANCHOS CWD.
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
BUCHMANN, MATT
760-247-9405
APPLE VALLEY, CA 92308