SANTA ROSA, CA · Sonoma County
SHAMROCK MOBILE HOME PARK Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
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)
- CA4900723
- System type
- Community Water System
- Population served
- 188
- Service connections
- 127
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2011 – June 30, 2011
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2010 – March 31, 2010
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2010 – December 31, 2012
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2009 – June 30, 2009
ResolvedMonitoring, Regular
—Nitrate
March 5, 2001 – April 13, 2001
ResolvedNotification, Public
—No contaminant on record
September 1, 1984 – September 30, 1984
ArchivedNotification, Public
—No contaminant on record
August 1, 1984 – August 31, 1984
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
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 |
|---|---|---|---|---|
| April 1, 2011 – June 30, 2011 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| January 1, 2010 – March 31, 2010 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| January 1, 2010 – December 31, 2012 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| April 1, 2009 – June 30, 2009 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| March 5, 2001 – April 13, 2001 | Monitoring, Regular | Nitrate | — | Resolved |
| September 1, 1984 – September 30, 1984 | Notification, Public | — | — | Archived |
| August 1, 1984 – August 31, 1984 | Notification, Public | — | — | 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 |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- December 23, 2025State Administrative/Compliance Order without penalty issued16 linked violations
- December 6, 2012State Compliance achieved22 linked violations
Contact
MARTIN, ALAN
707-318-1569
SANTA ROSA, CA 95403