Hydrohistorian
Modelled boundary. EPA estimated this service area (Random Forest) rather than tracing a utility-supplied map; treat the edge as approximate. About 0 km².
Where the water comes from
| Facility | Kind | Water |
|---|---|---|
| WELL NO 1 STEWART WELL | Well | Groundwater |
These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.
Compliance record
Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗
EPA's summary: violations in 2 of the last 12 quarters; not a serious violator. Contaminants in violation in the last three years, in EPA's words: 4010=Combined Radium (-226 and -228).
1 health-based violation on the federal record all time, 0 violations open today. Most recent health-based: Maximum contaminant level exceeded, compliance period from 2024-07-01, returned to compliance 2025-02-11.
| Period | Kind | Health-based | Status | Measured | Codes |
|---|---|---|---|---|---|
| 2024-07-01 – 2024-09-30 | Maximum contaminant level exceeded | yes | returned to compliance (2025-02-11) | 6.0 PCI/L (limit 5.0) | v02 c4010 r340 |
Lead and copper: the latest 90th-percentile lead result is 0.0015 mg/L (sampling period ending 2025-12-31) against an action level of 0.015 mg/L; 6 results on file.
SDWIS federal reporting carries violations and lead/copper percentiles only; nitrate, disinfection by-product and PFAS sample results are not in it. Codes are EPA's (violation, contaminant, rule); the ECHO report expands them.
The record
EPA SDWIS federal reporting as of 2026-09-08; the compliance record above is EPA's own, fetched monthly, and the ECHO report carries the rest. Report a problem →