EPA public water records · 06079
San Luis Obispo County, California
Find listed community water systems and their documented follow-up in federal fiscal 2026Q3.
- Systems with linked histories
- 34
- Systems with unresolved health-based records
- 3
- Of those, systems with a formally addressed health-based record
- 0
These counts cover the linked records shown here. A county listing can cover only part of the county or reflect a mailing location.
Find your water system
- ADA'S LODGESCA4000839 · California · 2 violation records · 0 unresolved health-based in this snapshot
- AFUERA DE CHORRO WATER COMPANYCA4000744 · California · 1 violation records · 0 unresolved health-based in this snapshot
- ALMIRA WATER ASSOCIATIONCA4000631 · California · 16 violation records · 0 unresolved health-based in this snapshot
- ATASCADERO STATE HOSPITALCA4010832 · California · 1 violation records · 0 unresolved health-based in this snapshot
- AVILA VALLEY MUTUAL WATER COCA4000716 · California · 1 violation records · 0 unresolved health-based in this snapshot
- BARON CANYON MUTUAL WATER CO.CA4000214 · California · 2 violation records · 0 unresolved health-based in this snapshot
- BASSI RANCH MUTUAL WATER CO.CA4000200 · California · 3 violation records · 0 unresolved health-based in this snapshot
- BEAR VALLEY WATER COMPANYCA4000660 · California · 3 violation records · 0 unresolved health-based in this snapshot
- CALIFORNIA MENS COLONYCA4010830 · California · 1 violation records · 0 unresolved health-based in this snapshot
- CALLENDER GROVE MUTUAL WATERCA4000805 · California · 1 violation records · 0 unresolved health-based in this snapshot
- CAMBRIA COMM SERVICES DISTCA4010014 · California · 1 violation records · 0 unresolved health-based in this snapshot
- CITY OF ARROYO GRANDE UTILITIES DIVISIONCA4010001 · California · 1 violation records · 0 unresolved health-based in this snapshot
- EDNA VALLEY RANCH EASTCA4000202 · California · 1 violation records · 0 unresolved health-based in this snapshot
- GARDEN FARMS C.W.D.CA4000507 · California · 2 violation records · 0 unresolved health-based in this snapshot
- GREEN RIVER MUTUAL WATER CO.CA4000554 · California · 3 violation records · 1 unresolved health-based in this snapshot
- H2O, INCCA4000741 · California · 2 violation records · 0 unresolved health-based in this snapshot
- HALCYON WATER SYSTEMCA4000501 · California · 24 violation records · 1 unresolved health-based in this snapshot
- HERITAGE RANCH CSDCA4010012 · California · 11 violation records · 0 unresolved health-based in this snapshot
- HIGUERA APARTMENTSCA4000563 · California · 27 violation records · 1 unresolved health-based in this snapshot
- KEN MAR GARDENSCA4000648 · California · 25 violation records · 0 unresolved health-based in this snapshot
- LAGUNA NEGRA MUTUAL WATER CO.CA4000705 · California · 2 violation records · 0 unresolved health-based in this snapshot
- LOPEZ PROJECTCA4010022 · California · 1 violation records · 0 unresolved health-based in this snapshot
- MESA DUNES MOBILE HOME ESTATESCA4000650 · California · 1 violation records · 0 unresolved health-based in this snapshot
- MUSTANG SPRINGS MUTUAL WATERCA4000775 · California · 3 violation records · 0 unresolved health-based in this snapshot
- NACIMIENTO WATER COMPANYCA4010027 · California · 16 violation records · 0 unresolved health-based in this snapshot
- OCEANO COMM SERVICES DIST.CA4010005 · California · 1 violation records · 0 unresolved health-based in this snapshot
- PISMO BEACH WATER DEPARTMENTCA4010008 · California · 4 violation records · 0 unresolved health-based in this snapshot
- RANCHO COLINA MOBILE HOME PARKCA4000653 · California · 1 violation records · 0 unresolved health-based in this snapshot
- RANCHO SALINAS MBWCCA4000803 · California · 1 violation records · 0 unresolved health-based in this snapshot
- RESTHAVEN MOBILE HOME PARKCA4000654 · California · 22 violation records · 0 unresolved health-based in this snapshot
- RIM ROCK WATER COMPANYCA4000750 · California · 25 violation records · 0 unresolved health-based in this snapshot
- SAN MIGUELITO MWCCA4010003 · California · 1 violation records · 0 unresolved health-based in this snapshot
- SAN SIMEON CSDCA4000568 · California · 2 violation records · 0 unresolved health-based in this snapshot
- WOODLAND PARK MUTUAL WATER COCA4000506 · California · 15 violation records · 0 unresolved health-based in this snapshot
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility