Vacaville Water Quality
California
According to EPA SDWIS, Vacaville, California is served by 12 community water systems covering about 37,568 people. The same extract lists 73 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 Vacaville, California is delivered through 12 EPA-regulated community water systems serving an estimated 37,568 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 73 violation records across the 12 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, TTHM, Revised Total Coliform Rule, Total Haloacetic Acids (HAA5), Coliform (TCR) and 1 others. 4 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 |
|---|---|---|---|
| SUISUN-SOLANO WATER AUTHORITY | 29,105 | 41 | Health |
| CALIFORNIA STATE PRISON - SOLANO | 5,100 | 1 | Health |
| RURAL NORTH VACAVILLE WATER DISTRICT | 1,313 | 0 | Clean |
| VINEYARD RV PARK | 550 | 0 | Clean |
| SID - GIBSON CANYON | 535 | 1 | Health |
| SID - ELMIRA | 290 | 0 | Clean |
| IMPERIAL MANOR MOBILEHOME COMMUNITY | 280 | 0 | Clean |
| SID - QUAIL CANYON | 132 | 0 | Clean |
| SID - PLEASANT HILLS RANCH | 89 | 24 | Health |
| SID - BLUE RIDGE OAKS | 63 | 0 | Clean |
| SID - PEABODY | 56 | 0 | Clean |
| RIVERSIDE MOBILE HOME PARK | 55 | 6 | 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 |
|---|---|---|
| SID - GIBSON CANYON | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SUISUN-SOLANO WATER AUTHORITY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-07-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-07-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-07-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-07-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-04-01 |
| RIVERSIDE MOBILE HOME PARK | Revised Total Coliform Rule | 2024-03-01 |
| RIVERSIDE MOBILE HOME PARK | Revised Total Coliform Rule | 2024-03-01 |
| RIVERSIDE MOBILE HOME PARK | Revised Total Coliform Rule | 2024-03-01 |
| RIVERSIDE MOBILE HOME PARK | Revised Total Coliform Rule | 2024-02-01 |
| RIVERSIDE MOBILE HOME PARK | Revised Total Coliform Rule | 2024-02-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2024-01-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SUISUN-SOLANO WATER AUTHORITY | TTHM | 2023-10-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| SID - PLEASANT HILLS RANCH | Total Haloacetic Acids (HAA5) | 2023-07-01 |
What are Vacaville's health-based records for?
Vacaville's health-based violation records carry 6 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 |
|---|---|---|
| Tthm | 41 | 2 |
| Total Haloacetic Acids (HAA5) | 23 | 1 |
| Revised Total Coliform Rule | 5 | 1 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Surface Water Treatment Rule | 1 | 1 |
| Coliform (TCR) | 1 | 1 |
TRI Facilities in Vacaville
| Facility | Total Releases |
|---|---|
| Alza Corp | 1.3K lbs |
| Duravent Inc. | 441 lbs |
| Court Galvanizing Inc. | 327 lbs |
| All Weather Insulated Panels | 5 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Vacaville, California? ▼
How many water violations does Vacaville have in this EPA extract? ▼
What contaminants were found in Vacaville water? ▼
How many water systems serve Vacaville? ▼
Where does Vacaville get its drinking water? ▼
Are there pollution sources near Vacaville? ▼
How does Vacaville compare in California?
Of the 909 California places with at least one community water system on file, Vacaville ranks #37 by number of systems (12).
Either side of it: Tehachapi (12), Three Rivers (12), Visalia (12), Anaheim (11)
About This Data
Figures here are the current EPA SDWIS extract joined to the 12 community water systems whose service area lists Vacaville, 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.