Clovis Water Quality
California
According to EPA SDWIS, Clovis, California is served by 8 community water systems covering about 132,181 people. The same extract lists 232 health-based violation records, most recently coded 1040 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Clovis, California is delivered through 8 EPA-regulated community water systems serving an estimated 132,181 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 232 violation records across the 8 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 7 distinct EPA contaminant codes: Nitrate, Gross Alpha Particle Activity, Combined Uranium, LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule and 2 others. 3 TRI-reporting industrial facilities are also located within the city limits.
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 |
|---|---|---|---|
| CITY OF CLOVIS | 130,130 | 0 | Clean |
| SHAVER LAKE HEIGHTS MWC | 836 | 9 | Health |
| RANCHO SESPE WORKERS IMP ASSOC | 600 | 0 | Clean |
| LAS DELTAS MUTUAL WATER COMPANY | 375 | 12 | Health |
| OLD RIVER MUTUAL WATER COMPANY | 130 | 42 | Health |
| SIERRA VISTA ASSOCIATION | 43 | 84 | Health |
| TWO TWENTY FOUR MOBILE HOME PK | 35 | 67 | Health |
| SOUTH KERN MUTUAL WATER COMPANY | 32 | 18 | Health |
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 |
|---|---|---|
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2025-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2025-10-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2025-10-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2025-10-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2025-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2025-07-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2025-07-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2025-07-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-04-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-04-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2025-04-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2025-04-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2025-04-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2025-04-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-01-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2025-01-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2025-01-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2025-01-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2025-01-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2025-01-01 |
| TWO TWENTY FOUR MOBILE HOME PK | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SHAVER LAKE HEIGHTS MWC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-10-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-10-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-10-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-10-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2024-10-01 |
| SOUTH KERN MUTUAL WATER COMPANY | Combined Uranium | 2024-10-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2024-10-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2024-10-01 |
| OLD RIVER MUTUAL WATER COMPANY | Combined Uranium | 2024-10-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-07-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-07-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-07-01 |
| SIERRA VISTA ASSOCIATION | Nitrate | 2024-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-07-01 |
| OLD RIVER MUTUAL WATER COMPANY | Revised Total Coliform Rule | 2024-07-01 |
| OLD RIVER MUTUAL WATER COMPANY | Revised Total Coliform Rule | 2024-07-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-04-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Gross Alpha Particle Activity | 2024-04-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-04-01 |
| TWO TWENTY FOUR MOBILE HOME PK | Combined Uranium | 2024-04-01 |
What are Clovis's health-based records for?
Clovis's health-based violation records carry 7 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 |
|---|---|---|
| Combined Uranium | 91 | 3 |
| Nitrate | 84 | 1 |
| Gross Alpha Particle Activity | 32 | 1 |
| Tthm | 12 | 1 |
| Coliform (TCR) | 9 | 2 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Revised Total Coliform Rule | 2 | 1 |
TRI Facilities in Clovis
| Facility | Total Releases |
|---|---|
| Valley Chrome Plating Inc. | 50 lbs |
| Anlin Industries | 0 lbs |
| Excelsior Inc. | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Clovis, California? ▼
How many water violations does Clovis have in this EPA extract? ▼
What contaminants were found in Clovis water? ▼
How many water systems serve Clovis? ▼
Where does Clovis get its drinking water? ▼
Are there pollution sources near Clovis? ▼
How does Clovis compare in California?
Of the 909 California places with at least one community water system on file, Clovis ranks #69 by number of systems (8).
Either side of it: Burlingame (8), Camarillo (8), Concord (8), El Monte (8)
About This Data
Figures here are the current EPA SDWIS extract joined to the 8 community water systems whose service area lists Clovis, 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.