Sebastopol Water Quality
California
According to EPA SDWIS, Sebastopol, California is served by 10 community water systems covering about 8,387 people. The same extract lists 7 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Sebastopol, California is delivered through 10 EPA-regulated community water systems serving an estimated 8,387 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 7 violation records across the 10 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Surface Water Treatment Rule.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the California drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| SEBASTOPOL, CITY OF | 7,522 | 0 | Clean |
| BELMONT TERRACE MUTUAL WATER COMPANY | 287 | 0 | Clean |
| KELLY MUTUAL WATER COMPANY | 135 | 1 | Health |
| FIRCREST MUTUAL WATER COMPANY | 126 | 0 | Clean |
| WENDELL LANE MUTUAL WATER COMPANY | 82 | 0 | Clean |
| BEACH CREEK MOBILE HOME PARK | 67 | 6 | Health |
| LONE PINE MUTUAL WATER COMPANY | 65 | 0 | Clean |
| VINEHILL VISTAS MUTUAL WATER COMPANY | 42 | 0 | Clean |
| LARKIN WOODS MUTUAL WATER COMPANY | 34 | 0 | Clean |
| PINE HILL TERRACE MOBILE HOME PARK | 27 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| KELLY MUTUAL WATER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 2008-04-01 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 2007-12-01 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 2003-03-01 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 2003-02-01 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 2002-12-01 |
| BEACH CREEK MOBILE HOME PARK | Surface Water Treatment Rule | 1993-06-01 |
What are Sebastopol's health-based records for?
Sebastopol's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Surface Water Treatment Rule | 6 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Sebastopol, California? ▼
How many water violations does Sebastopol have in this EPA extract? ▼
What contaminants were found in Sebastopol water? ▼
How many water systems serve Sebastopol? ▼
Where does Sebastopol get its drinking water? ▼
How does Sebastopol compare in California?
Of the 909 California places with at least one community water system on file, Sebastopol ranks #55 by number of systems (10).
Either side of it: Pauma Valley (10), San Francisco (10), Tahoe City (10), Downey (9)
About This Data
Figures here are the current EPA SDWIS extract joined to the 10 community water systems whose service area lists Sebastopol, ranked against the 909 California places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.