Irvine, CA · Orange County
IRWD - SANTIAGO SYSTEM Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of June 9, 2009. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Orange County, CA.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA3010095
- System type
- Community Water System
- Population served
- 0
- Service connections
- 741
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
IRWD - SANTIAGO SYSTEM formerly served 0 people from surface water.
EPA's federal records list this system as inactive in 2009; the record below is historical.
As of August 1, 2026, its federal record holds 2 entries between 2003 and 2006, all of which EPA lists as closed. Nothing has been added since 2006.
None of the 2 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules and the Miscellaneous Other Rules.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 2006 – July 31, 2006
ResolvedOperations Report
—No contaminant on record
September 1, 2003 – September 30, 2003
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2006 – July 31, 2006 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| September 1, 2003 – September 30, 2003 | Operations Report | — | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 30, 2006State Administrative/Compliance Order without penalty issued1 linked violation
- August 30, 2006State Compliance achieved1 linked violation
- September 18, 2003State Public Notification received1 linked violation
Last known contact on file (system is inactive)
IRWD-Santiago
9494535310
Irvine, CA 92619