LAYTONVILLE, CA · Mendocino County
LAYTONVILLE COUNTY WATER DISTRICT Water System
Consumer Confidence Report status
LAYTONVILLE COUNTY WATER DISTRICT 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 LAYTONVILLE COUNTY WATER DISTRICT.
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)
- CA2310011
- System type
- Community Water System
- Population served
- 1,152
- Service connections
- 422
- Ownership
- local government
- Water source
- groundwater (wells)
LAYTONVILLE COUNTY WATER DISTRICT is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 1,152 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 1989 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.
None of the 4 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 inorganic chemicals and the Miscellaneous Other Rules.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2007 – December 31, 2007
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2007 – June 30, 2007
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2006 – September 30, 2006
ResolvedNotification, Public
—No contaminant on record
April 1, 1989 – April 30, 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 |
|---|---|---|---|---|
| October 1, 2007 – December 31, 2007 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 2007 – June 30, 2007 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| July 1, 2006 – September 30, 2006 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 1989 – April 30, 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
No enforcement actions on record for this system.
Common questions
Is LAYTONVILLE COUNTY WATER DISTRICT required to publish a Consumer Confidence Report?
- Yes. LAYTONVILLE COUNTY WATER DISTRICT 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 LAYTONVILLE COUNTY WATER DISTRICT’s next Consumer Confidence Report due?
- LAYTONVILLE COUNTY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAYTONVILLE COUNTY WATER DISTRICT have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LAYTONVILLE COUNTY WATER DISTRICT.
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
ATHEY, TRACEY
707-984-6444
LAYTONVILLE, CA 95454