OAKDALE, CA · Stanislaus County
OAKDALE, CITY OF Water System
Consumer Confidence Report status
OAKDALE, CITY OF 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 OAKDALE, CITY OF.
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)
- CA5010014
- System type
- Community Water System
- Population served
- 23,235
- Service connections
- 8,335
- Ownership
- local government
- Water source
- groundwater (wells)
OAKDALE, CITY OF is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 23,235 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 1988 and 2009, all of which EPA lists as closed. Nothing has been added since 2009.
Of the 4, 3 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 inorganic chemicals and the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 2009 – August 31, 2009
ResolvedMonitoring, Regular
—Fluoride
March 1, 1988 – March 31, 1988
ArchivedMonitoring, Regular
—Nitrate
March 1, 1988 – March 31, 1988
ArchivedMonitoring, Regular
—Selenium
March 1, 1988 – March 31, 1988
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 |
|---|---|---|---|---|
| August 1, 2009 – August 31, 2009 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| March 1, 1988 – March 31, 1988 | Monitoring, Regular | Fluoride | — | Archived |
| March 1, 1988 – March 31, 1988 | Monitoring, Regular | Nitrate | — | Archived |
| March 1, 1988 – March 31, 1988 | Monitoring, Regular | Selenium | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- February 15, 2005State Administrative/Compliance Order without penalty issued2 linked violations
Common questions
Is OAKDALE, CITY OF required to publish a Consumer Confidence Report?
- Yes. OAKDALE, CITY OF 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 OAKDALE, CITY OF’s next Consumer Confidence Report due?
- OAKDALE, CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OAKDALE, CITY OF have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OAKDALE, CITY OF.
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
ROBERTS, JEFF
209-845-3600
OAKDALE, CA 95361