DAVIS, CA
ROYAL OAK Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of October 23, 2003. 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 CA.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
- CA5700536
- System type
- Community Water System
- Population served
- 400
- Service connections
- 180
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Notification, Public
—No contaminant on record
September 1, 1984 – September 30, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedSelenium
June 1, 1984 – June 30, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1983 – July 31, 1983
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedSelenium
March 1, 1983 – March 31, 1983
ArchivedNotification, Public
—No contaminant on record
March 1, 1983 – March 31, 1983
ArchivedNotification, Public
—No contaminant on record
December 1, 1982 – December 31, 1982
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedSelenium
December 1, 1982 – December 31, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| September 1, 1984 – September 30, 1984 | Notification, Public | — | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | Archived |
| June 1, 1984 – June 30, 1984 | Maximum Contaminant Level Violation, Single Sample | Selenium | Health-based | Archived |
| July 1, 1983 – July 31, 1983 | Notification, Public | — | — | Archived |
| March 1, 1983 – March 31, 1983 | Maximum Contaminant Level Violation, Single Sample | Selenium | Health-based | Archived |
| March 1, 1983 – March 31, 1983 | Notification, Public | — | — | Archived |
| December 1, 1982 – December 31, 1982 | Notification, Public | — | — | Archived |
| December 1, 1982 – December 31, 1982 | Maximum Contaminant Level Violation, Single Sample | Selenium | Health-based | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 30, 1980 – October 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
Phone not on record
DAVIS, CA 95616