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 |
|---|---|---|
| SORTAIS SPRING | Well | Groundwater under the influence of surface water |
These are EPA's facility records, not DWR structures. Which decreed rights sit behind an intake is the next phase; nothing here is inferred.
DWR structures that name this system
Source Probable join · fetched 2026-09-09 · matched on DWR's recorded contact or an EPA intake name; verify on the dossier
No DWR structure on file records this system as its contact, and none of its EPA intakes matches a structure name in its districts. DWR records a contact on only a fraction of structures, and only for districts fetched from its live service, so this is absence of a record, not evidence of no rights.
Compliance record
Source Register of another agency · fetched 2026-09-09 · verify at EPA ECHO ↗
EPA's summary: violations in 3 of the last 12 quarters; not a serious violator. Contaminants in violation in the last three years, in EPA's words: 0300=Interim Enhanced Surface Water Treatment Rule.
3 health-based violations on the federal record all time, 0 violations open today. Most recent health-based: Treatment technique not met, compliance period from 2023-04-01, returned to compliance 2023-06-07.
| Period | Kind | Health-based | Status | Measured | Codes |
|---|---|---|---|---|---|
| 2023-04-01 – 2023-04-30 | Treatment technique not met | yes | returned to compliance (2023-06-07) | v44 c0300 r122 | |
| 2019-05-01 – 2019-05-31 | Treatment technique not met | yes | returned to compliance (2019-07-08) | v44 c0300 r122 | |
| 2019-04-01 – 2019-04-30 | Treatment technique not met | yes | returned to compliance (2019-07-08) | v44 c0300 r122 |
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.
PFAS and lithium: EPA's UCMR 5 monitoring, 2023–2025
Source Register of another agency · fetched 2026-09-09 · verify at EPA UCMR occurrence data ↗
EPA did not sample this system under UCMR 5 (the rule covered every system serving more than 3,300 people and a drawn sample of smaller ones).
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 →