DUNSMUIR, CA · Siskiyou County
VAN FOSSEN & MASON 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 Siskiyou County, 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)
- CA4700506
- System type
- Community Water System
- Population served
- 0
- Service connections
- 7
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
May 24, 2001 – June 25, 2001
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1999 – September 30, 1999
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 1999 – March 31, 1999
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 1999 – February 28, 1999
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
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 |
|---|---|---|---|---|
| May 24, 2001 – June 25, 2001 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| September 1, 1999 – September 30, 1999 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| March 1, 1999 – March 31, 1999 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| February 1, 1999 – February 28, 1999 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | 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
- April 6, 2001State Administrative/Compliance Order without penalty issued2 linked violations
- October 19, 1999State Violation/Reminder Notice1 linked violation
Last known contact on file (system is inactive)
Not on record
Phone not on record
DUNSMUIR, CA 96025