Los Gatos Water Quality
California
According to EPA SDWIS, Los Gatos, California is served by 16 community water systems covering about 3,587 people. The same extract lists 126 health-based violation records, most recently coded 0999 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Los Gatos, California is delivered through 16 EPA-regulated community water systems serving an estimated 3,587 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 126 violation records across the 16 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Chlorine, LEAD AND COPPER RULE REVISIONS, Bromate, Surface Water Treatment 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 |
|---|---|---|---|
| COYOTE VALLEY RV RESORT | 500 | 1 | Health |
| SUMMIT WEST MUTUAL WATER CO. | 481 | 2 | Health |
| VILLA DEL MONTE MWC | 419 | 0 | Clean |
| LAS CUMBRES MUTUAL WATER CO | 402 | 107 | Health |
| ALDERCROFT HEIGHTS COUNTY WATER DISTRICT | 338 | 1 | Health |
| LUPIN LODGE | 300 | 3 | Health |
| RIDGE MUTUAL WATER COMPANY | 213 | 1 | Health |
| MELODY WOODS WATER COMPANY | 168 | 0 | Clean |
| LAKE CANYON MUTUAL WATER COMPANY | 156 | 2 | Health |
| SUMMIT MUTUAL WATER COMPANY | 152 | 4 | Health |
| RAINERI MUTUAL WATER COMPANY | 145 | 2 | Health |
| VISTA GRANDE WATER USERS ASSOCIATION | 79 | 0 | Clean |
| BRUSH AND OLD WELL MUTUAL WATER COMPANY | 70 | 1 | Health |
| LAUREL COMMUNITY LEAGUE | 64 | 2 | Health |
| MIREVAL IMPROVEMENT ASSOCIATION | 60 | 0 | Clean |
| MOUNTAIN SPRINGS MUTUAL WATER COMPANY | 40 | 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 |
|---|---|---|
| LAUREL COMMUNITY LEAGUE | Chlorine | 2025-10-01 |
| SUMMIT MUTUAL WATER COMPANY | Chlorine | 2025-04-01 |
| SUMMIT MUTUAL WATER COMPANY | Chlorine | 2025-04-01 |
| RIDGE MUTUAL WATER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SUMMIT WEST MUTUAL WATER CO. | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| BRUSH AND OLD WELL MUTUAL WATER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| LUPIN LODGE | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| LAKE CANYON MUTUAL WATER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| RAINERI MUTUAL WATER COMPANY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SUMMIT MUTUAL WATER COMPANY | Bromate | 2022-10-01 |
| SUMMIT MUTUAL WATER COMPANY | Bromate | 2022-10-01 |
| LUPIN LODGE | Surface Water Treatment Rule | 2021-07-01 |
| LUPIN LODGE | Surface Water Treatment Rule | 2021-06-01 |
| COYOTE VALLEY RV RESORT | Revised Total Coliform Rule | 2019-01-01 |
| LAUREL COMMUNITY LEAGUE | Surface Water Treatment Rule | 2017-01-01 |
| RAINERI MUTUAL WATER COMPANY | Surface Water Treatment Rule | 2017-01-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-10-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-10-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-09-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-09-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-08-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-08-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-07-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-07-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-06-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-06-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-05-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-05-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-04-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-04-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-03-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-03-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-02-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-02-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-01-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2016-01-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-12-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-12-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-11-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-10-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-10-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-09-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-09-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-08-01 |
| LAS CUMBRES MUTUAL WATER CO | Surface Water Treatment Rule | 2015-08-01 |
What are Los Gatos's health-based records for?
Los Gatos's health-based violation records carry 5 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 | 114 | 7 |
| Lead and Copper Rule Revisions | 6 | 6 |
| Chlorine | 3 | 2 |
| Bromate | 2 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Los Gatos, California? ▼
How many water violations does Los Gatos have in this EPA extract? ▼
What contaminants were found in Los Gatos water? ▼
How many water systems serve Los Gatos? ▼
Where does Los Gatos get its drinking water? ▼
How does Los Gatos compare in California?
Of the 909 California places with at least one community water system on file, Los Gatos ranks #22 by number of systems (16).
Either side of it: Santa Barbara (17), Thermal (17), Modesto (16), Napa (16)
About This Data
Figures here are the current EPA SDWIS extract joined to the 16 community water systems whose service area lists Los Gatos, 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.