Irvine Water Quality
California
According to EPA SDWIS, Irvine, California is served by 12 community water systems covering about 448,072 people. The same extract lists 6 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 Irvine, California is delivered through 12 EPA-regulated community water systems serving an estimated 448,072 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 6 violation records across the 12 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Nitrate, Coliform (TCR). 14 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 |
|---|---|---|---|
| IRVINE RANCH WATER DISTRICT | 444,800 | 0 | Clean |
| BIG BASIN WATER COMPANY | 1,120 | 0 | Clean |
| CABANA HOLIDAY WS | 506 | 0 | Clean |
| ARBOR MOBILE HOME PARK WS | 340 | 0 | Clean |
| SAINT MARIE MOBILE HOME PARK | 320 | 4 | Health |
| RIVERDALE ESTATES | 300 | 0 | Clean |
| DOT MHP | 229 | 1 | Health |
| Thirty-Twenty Estates | 125 | 0 | Clean |
| MONETT VILLAGE | 112 | 0 | Clean |
| ALTURAS FILLMORE MHP | 99 | 0 | Clean |
| BOARDWALK MHC | 71 | 0 | Clean |
| TWIN CREEKS MOBILE AND RV VILLAGE | 50 | 1 | 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 |
|---|---|---|
| SAINT MARIE MOBILE HOME PARK | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TWIN CREEKS MOBILE AND RV VILLAGE | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SAINT MARIE MOBILE HOME PARK | Nitrate | 2020-01-01 |
| SAINT MARIE MOBILE HOME PARK | Nitrate | 2020-01-01 |
| SAINT MARIE MOBILE HOME PARK | Nitrate | 2019-01-01 |
| DOT MHP | Coliform (TCR) | 2015-11-01 |
What are Irvine's health-based records for?
Irvine's health-based violation records carry 3 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 |
|---|---|---|
| Nitrate | 3 | 1 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Coliform (TCR) | 1 | 1 |
TRI Facilities in Irvine
| Facility | Total Releases |
|---|---|
| Graphic Packaging International | 36.1K lbs |
| Pcc Rollmet Inc | 5.8K lbs |
| Mitsubishi Chemical Carbon Fiber & Composites Inc | 5.0K lbs |
| Sdc Technologies Inc | 1.4K lbs |
| Ati Forged Products | 1.3K lbs |
| Itt Cannon LLC | 229 lbs |
| Shur-Lok Co | 152 lbs |
| National Ready Mix Concrete Co . | 64 lbs |
| Applied Medical Resources Corp | 62 lbs |
| Irvine Plant 21 | 39 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Irvine, California? ▼
How many water violations does Irvine have in this EPA extract? ▼
What contaminants were found in Irvine water? ▼
How many water systems serve Irvine? ▼
Where does Irvine get its drinking water? ▼
Are there pollution sources near Irvine? ▼
How does Irvine compare in California?
Of the 909 California places with at least one community water system on file, Irvine ranks #33 by number of systems (12).
Either side of it: Sonora (13), Gilroy (12), Rancho Cordova (12), Tehachapi (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 12 community water systems whose service area lists Irvine, 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.