Santa Ysabel Water Quality
California
According to EPA SDWIS, Santa Ysabel, California is served by 5 community water systems covering about 10,414 people. The same extract lists 14 health-based violation records, most recently coded 0700 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Santa Ysabel, California is delivered through 5 EPA-regulated community water systems serving an estimated 10,414 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 14 violation records across the 5 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: Groundwater Rule, Revised Total Coliform 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 |
|---|---|---|---|
| LAKE HENSHAW RESORT INC. | 9,913 | 1 | Health |
| Santa Ysabel Main | 325 | 11 | Health |
| Mesa Grande - Black Canyon | 81 | 2 | Health |
| San Felipe Water System | 52 | 0 | Clean |
| Mesa Grande (Tract 2) | 43 | 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 |
|---|---|---|
| Mesa Grande - Black Canyon | Groundwater Rule | 2024-05-16 |
| Mesa Grande - Black Canyon | Groundwater Rule | 2024-05-16 |
| Santa Ysabel Main | Groundwater Rule | 2022-06-30 |
| Santa Ysabel Main | Groundwater Rule | 2022-06-30 |
| Santa Ysabel Main | Groundwater Rule | 2022-06-30 |
| Santa Ysabel Main | Groundwater Rule | 2022-06-30 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| Santa Ysabel Main | Groundwater Rule | 2021-11-05 |
| LAKE HENSHAW RESORT INC. | Revised Total Coliform Rule | 2021-09-01 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Santa Ysabel, California? ▼
How many water violations does Santa Ysabel have in this EPA extract? ▼
What contaminants were found in Santa Ysabel water? ▼
How many water systems serve Santa Ysabel? ▼
Where does Santa Ysabel get its drinking water? ▼
How does Santa Ysabel compare in California?
Of the 912 California places with at least one community water system on file, Santa Ysabel ranks #152 by number of systems (5).
Either side of it: San Martin (5), Santa Paula (5), Scotts Valley (5), South Lake Tahoe (5)
About This Data
Figures here are the current EPA SDWIS extract joined to the 5 community water systems whose service area lists Santa Ysabel, ranked against the 912 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.