Barstow Water Quality
California
According to EPA SDWIS, Barstow, California is served by 3 community water systems covering about 1,364 people. The same extract lists 126 health-based violation records, most recently coded 1005 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Barstow, California is delivered through 3 EPA-regulated community water systems serving an estimated 1,364 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 3 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: Arsenic, LEAD AND COPPER RULE REVISIONS. 2 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 |
|---|---|---|---|
| USMC NEBO (BARSTOW) | 1,126 | 0 | Clean |
| BAR-LEN MWC | 126 | 117 | Health |
| HI DESERT MWC | 112 | 9 | 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 |
|---|---|---|
| BAR-LEN MWC | Arsenic | 2025-10-01 |
| HI DESERT MWC | Arsenic | 2025-10-01 |
| BAR-LEN MWC | Arsenic | 2025-07-01 |
| HI DESERT MWC | Arsenic | 2025-07-01 |
| BAR-LEN MWC | Arsenic | 2025-04-01 |
| HI DESERT MWC | Arsenic | 2025-04-01 |
| BAR-LEN MWC | Arsenic | 2025-01-01 |
| HI DESERT MWC | Arsenic | 2025-01-01 |
| BAR-LEN MWC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| HI DESERT MWC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| BAR-LEN MWC | Arsenic | 2024-10-01 |
| BAR-LEN MWC | Arsenic | 2024-10-01 |
| BAR-LEN MWC | Arsenic | 2024-10-01 |
| HI DESERT MWC | Arsenic | 2024-10-01 |
| HI DESERT MWC | Arsenic | 2024-10-01 |
| BAR-LEN MWC | Arsenic | 2024-07-01 |
| BAR-LEN MWC | Arsenic | 2024-07-01 |
| BAR-LEN MWC | Arsenic | 2024-07-01 |
| HI DESERT MWC | Arsenic | 2024-07-01 |
| HI DESERT MWC | Arsenic | 2024-07-01 |
| BAR-LEN MWC | Arsenic | 2024-04-01 |
| BAR-LEN MWC | Arsenic | 2024-04-01 |
| BAR-LEN MWC | Arsenic | 2024-04-01 |
| BAR-LEN MWC | Arsenic | 2024-01-01 |
| BAR-LEN MWC | Arsenic | 2024-01-01 |
| BAR-LEN MWC | Arsenic | 2023-10-01 |
| BAR-LEN MWC | Arsenic | 2023-10-01 |
| BAR-LEN MWC | Arsenic | 2023-10-01 |
| BAR-LEN MWC | Arsenic | 2023-07-01 |
| BAR-LEN MWC | Arsenic | 2023-07-01 |
| BAR-LEN MWC | Arsenic | 2023-07-01 |
| BAR-LEN MWC | Arsenic | 2023-07-01 |
| BAR-LEN MWC | Arsenic | 2023-04-01 |
| BAR-LEN MWC | Arsenic | 2023-04-01 |
| BAR-LEN MWC | Arsenic | 2023-04-01 |
| BAR-LEN MWC | Arsenic | 2023-04-01 |
| BAR-LEN MWC | Arsenic | 2023-01-01 |
| BAR-LEN MWC | Arsenic | 2023-01-01 |
| BAR-LEN MWC | Arsenic | 2023-01-01 |
| BAR-LEN MWC | Arsenic | 2023-01-01 |
| BAR-LEN MWC | Arsenic | 2022-10-01 |
| BAR-LEN MWC | Arsenic | 2022-10-01 |
| BAR-LEN MWC | Arsenic | 2022-10-01 |
| BAR-LEN MWC | Arsenic | 2022-07-01 |
| BAR-LEN MWC | Arsenic | 2022-07-01 |
| BAR-LEN MWC | Arsenic | 2022-07-01 |
| BAR-LEN MWC | Arsenic | 2022-07-01 |
| BAR-LEN MWC | Arsenic | 2022-04-01 |
| BAR-LEN MWC | Arsenic | 2022-04-01 |
| BAR-LEN MWC | Arsenic | 2022-04-01 |
TRI Facilities in Barstow
| Facility | Total Releases |
|---|---|
| U.S. Marine Corps Logistics Base Barstow Nebo Range | 6.3K lbs |
| Marine Corps Logistics Base Barstow Yermo Annex | 912 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Barstow, California? ▼
How many water violations does Barstow have in this EPA extract? ▼
What contaminants were found in Barstow water? ▼
How many water systems serve Barstow? ▼
Where does Barstow get its drinking water? ▼
Are there pollution sources near Barstow? ▼
How does Barstow compare in California?
Of the 912 California places with at least one community water system on file, Barstow ranks #224 by number of systems (3).
Either side of it: Atascadero (3), Auberry (3), Big Bear Lake (3), Big Pine (3)
About This Data
Figures here are the current EPA SDWIS extract joined to the 3 community water systems whose service area lists Barstow, ranked against the 912 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.