NEWPORT BEACH, CA · Tuolumne County
COLUMBIA MOBILE HOME PARK Water System
Consumer Confidence Report status
COLUMBIA MOBILE HOME PARK 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 COLUMBIA MOBILE HOME PARK.
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)
- CA5500149
- System type
- Community Water System
- Population served
- 89
- Service connections
- 63
- Ownership
- privately owned
- Water source
- groundwater (wells)
COLUMBIA MOBILE HOME PARK is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 89 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1981 and 2013, all of which EPA lists as closed. Nothing has been added since 2013.
Of the 3, 1 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, the Miscellaneous Other Rules, and the Radionuclides and Revised Rad Rule.
Violation history
Treatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
September 1, 2013 – November 9, 2013
ResolvedNotification, Public
—No contaminant on record
July 1, 1983 – July 31, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| September 1, 2013 – November 9, 2013 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
| July 1, 1983 – July 31, 1983 | Notification, Public | — | — | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- September 15, 2025State Compliance achieved2 linked violations
- April 6, 2023State Compliance achieved1 linked violation
- May 19, 2014State Compliance achieved9 linked violations
- September 12, 2013State Administrative/Compliance Order without penalty issued5 linked violations
- September 30, 2011State Compliance achieved3 linked violations
Common questions
Is COLUMBIA MOBILE HOME PARK required to publish a Consumer Confidence Report?
- Yes. COLUMBIA MOBILE HOME PARK 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 COLUMBIA MOBILE HOME PARK’s next Consumer Confidence Report due?
- COLUMBIA MOBILE HOME PARK’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does COLUMBIA MOBILE HOME PARK have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for COLUMBIA MOBILE HOME PARK.
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
CLAYTON, JAMES
949-636-1703
NEWPORT BEACH, CA 92660