LA GRANGE, CA · Tuolumne County
LAKE DON PEDRO CSD Water System
Consumer Confidence Report status
LAKE DON PEDRO CSD 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 LAKE DON PEDRO CSD.
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)
- CA5510008
- System type
- Community Water System
- Population served
- 3,240
- Service connections
- 1,559
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
LAKE DON PEDRO CSD is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 3,240 people from surface water.
As of August 1, 2026, its federal record holds 5 entries between 1989 and 2009, all of which EPA lists as closed. Nothing has been added since 2009.
Of the 5, 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 and the Miscellaneous Other Rules.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTTHM
April 1, 2009 – June 30, 2009
ResolvedMonitoring and Reporting (DBP)
—TTHM
April 1, 2006 – June 30, 2006
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
April 1, 2006 – June 30, 2006
ResolvedNotification, Public
—No contaminant on record
February 1, 1989 – February 28, 1989
ArchivedNotification, Public
—No contaminant on record
February 1, 1989 – February 28, 1989
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 |
|---|---|---|---|---|
| April 1, 2009 – June 30, 2009 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| April 1, 2006 – June 30, 2006 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| April 1, 2006 – June 30, 2006 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| February 1, 1989 – February 28, 1989 | Notification, Public | — | — | Archived |
| February 1, 1989 – February 28, 1989 | Notification, Public | — | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- May 6, 2010State Compliance achieved21 linked violations
Common questions
Is LAKE DON PEDRO CSD required to publish a Consumer Confidence Report?
- Yes. LAKE DON PEDRO CSD 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 LAKE DON PEDRO CSD’s next Consumer Confidence Report due?
- LAKE DON PEDRO CSD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAKE DON PEDRO CSD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LAKE DON PEDRO CSD.
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
SAVIDGE, DAVE
209-852-2331
LA GRANGE, CA 95329