CHICO, CA · Tulare County

DEL ORO RIVER ISLAND SERV TERR #1 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): CA5400665
System type: Community Water System
Population served: 1,280
Service connections: 388
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
January 1, 2012 – March 31, 2012
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
July 1, 2009 – September 30, 2009
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
January 1, 2008 – March 31, 2008
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
July 1, 2007 – September 30, 2007
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
April 1, 2007 – June 30, 2007
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
July 1, 2006 – September 30, 2006
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2006 – September 30, 2006
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
April 1, 2006 – June 30, 2006
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
October 1, 2005 – December 31, 2005
Archived
Notification, Public
—
No contaminant on record
July 1, 1983 – July 31, 1983
Archived
Notification, Public
—
No contaminant on record
June 1, 1983 – June 30, 1983
Archived
Notification, Public
—
No contaminant on record
March 1, 1983 – March 31, 1983
Archived
Notification, Public
—
No contaminant on record
January 1, 1983 – January 31, 1983
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Monitoring, 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)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
March 1, 2007 – March 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
October 1, 2005 – December 31, 2005	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
July 1, 1983 – July 31, 1983	Notification, Public	—	—	Archived
June 1, 1983 – June 30, 1983	Notification, Public	—	—	Archived
March 1, 1983 – March 31, 1983	Notification, Public	—	—	Archived
January 1, 1983 – January 31, 1983	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)Resolved addressed and confirmed by the state

Enforcement actions

August 21, 2023State Administrative/Compliance Order without penalty issued7 linked violations
November 18, 2011State Administrative/Compliance Order without penalty issued24 linked violations
October 16, 2008State Administrative/Compliance Order without penalty issued18 linked violations
May 17, 2007State Violation/Reminder Notice1 linked violation
April 28, 2006State Violation/Reminder Notice1 linked violation
April 18, 2006State Violation/Reminder Notice1 linked violation
March 15, 2005State Administrative/Compliance Order without penalty issued1 linked violation
April 10, 2004State Formal Notice of Violation issued1 linked violation
April 10, 2004State Formal Notice of Violation issued1 linked violation
February 10, 2004State Formal Notice of Violation issued2 linked violations
January 14, 2004State Administrative/Compliance Order without penalty issued1 linked violation
September 10, 2003State Administrative/Compliance Order without penalty issued2 linked violations
May 10, 2003State Formal Notice of Violation issued3 linked violations

Contact

FORTINO, ROBERT

530-894-1100

CHICO, CA 95927