San Bernardino Water Quality
California
According to EPA SDWIS, San Bernardino, California is served by 13 community water systems covering about 377,965 people. The same extract lists 476 health-based violation records, most recently coded 4006 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in San Bernardino, California is delivered through 13 EPA-regulated community water systems serving an estimated 377,965 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 476 violation records across the 13 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Combined Uranium, Fluoride, Arsenic, Gross Alpha Particle Activity, Lead and Copper Rule and 1 others. 11 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 |
|---|---|---|---|
| SAN BERNARDINO CITY | 214,665 | 0 | Clean |
| SAN BERNARDINO VALLEY WD | 109,608 | 0 | Clean |
| SBDNO COUNTY SERVICE AREA 64 | 14,911 | 0 | Clean |
| MUSCOY MWC NO. 1 | 13,000 | 1 | Health |
| SBDNO COUNTY SERVICE AREA 70J | 12,843 | 0 | Clean |
| GLEN HELEN WATER SYSTEM | 5,900 | 0 | Clean |
| GILBERT STREET COMPLEX | 3,833 | 0 | Clean |
| SBDNO COUNTY SERVICE AREA 70 CEDAR GLEN | 1,240 | 16 | Health |
| CSA 70 W-3 HACIENDA | 611 | 88 | Health |
| CSA 42 ORO GRANDE | 529 | 0 | Clean |
| CSA 70 W-4 PIONEERTOWN | 470 | 284 | Health |
| CSA 70-F MORONGO | 300 | 87 | Health |
| CAMP WATERMAN MWC | 55 | 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 |
|---|---|---|
| CSA 70-F MORONGO | Combined Uranium | 2025-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2025-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2025-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2025-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2025-04-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2025-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2025-01-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2025-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-04-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-04-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2024-01-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-01-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-01-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2024-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-10-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-10-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-07-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-07-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-04-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-04-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-04-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-01-01 |
| CSA 70-F MORONGO | Combined Uranium | 2023-01-01 |
| CSA 70 W-3 HACIENDA | Combined Uranium | 2023-01-01 |
What are San Bernardino's health-based records for?
San Bernardino'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 |
|---|---|---|
| Combined Uranium | 221 | 3 |
| Arsenic | 120 | 1 |
| Fluoride | 116 | 1 |
| Coliform (TCR) | 13 | 2 |
| Lead and Copper Rule | 4 | 1 |
| Gross Alpha Particle Activity | 2 | 1 |
TRI Facilities in San Bernardino
| Facility | Total Releases |
|---|---|
| Farmdale Creamery LLC | 17.3K lbs |
| San Bernardino Steel | 378 lbs |
| US Forest Service Air Tanker Base | 48 lbs |
| Hayden Industrial Products | 21 lbs |
| Robertson's Ready Mix San Bernardino Plant 12 | 10 lbs |
| Thermal Solutions Manufacturing Inc. | 4 lbs |
| Holliday Rock - San Bernardino Facility | 0 lbs |
| Red Collar Pet Foods | 0 lbs |
| Mapei Corp | 0 lbs |
| Cmc Rebar - Ca - San Bernardino | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in San Bernardino, California? ▼
How many water violations does San Bernardino have in this EPA extract? ▼
What contaminants were found in San Bernardino water? ▼
How many water systems serve San Bernardino? ▼
Where does San Bernardino get its drinking water? ▼
Are there pollution sources near San Bernardino? ▼
How does San Bernardino compare in California?
Of the 909 California places with at least one community water system on file, San Bernardino ranks #30 by number of systems (13).
Either side of it: Arroyo Grande (13), Oxnard (13), Sonora (13), Gilroy (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 13 community water systems whose service area lists San Bernardino, 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.