HANFORD, CA · Kings County

HANFORD, CITY OF 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): CA1610003
System type: Community Water System
Population served: 62,127
Service connections: 19,077
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1989 – November 30, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
September 1, 1989 – September 30, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1989 – August 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1989 – July 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1989 – June 30, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
May 1, 1989 – May 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1989 – April 30, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1989 – March 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1989 – February 28, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1989 – January 31, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
December 1, 1988 – December 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1988 – November 30, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1988 – October 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
September 1, 1988 – September 30, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1988 – August 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1988 – July 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1988 – June 30, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1988 – April 30, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1988 – March 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1988 – February 29, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1988 – January 31, 1988
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1987 – November 30, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1987 – October 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1987 – August 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1987 – July 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1987 – June 30, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
May 1, 1987 – May 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1987 – April 30, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1987 – March 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1987 – February 28, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1987 – January 31, 1987
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1986 – July 31, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1986 – June 30, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
May 1, 1986 – May 31, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1986 – April 30, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1986 – March 31, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
December 1, 1985 – December 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1985 – November 30, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1985 – October 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
September 1, 1985 – September 30, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1985 – August 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1985 – July 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1985 – March 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1985 – February 28, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1985 – December 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1985 – January 31, 1985
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
December 1, 1984 – December 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1984 – November 30, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1984 – October 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
September 1, 1984 – September 30, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1984 – August 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1984 – July 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1984 – June 30, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
May 1, 1984 – May 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1984 – April 30, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1984 – March 31, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1984 – February 29, 1984
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
December 1, 1983 – December 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1983 – October 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
September 1, 1983 – September 30, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
August 1, 1983 – August 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
July 1, 1983 – July 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
June 1, 1983 – June 30, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
May 1, 1983 – May 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
April 1, 1983 – April 30, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
March 1, 1983 – March 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
February 1, 1983 – February 28, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
January 1, 1983 – January 31, 1983
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
December 1, 1982 – December 31, 1982
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
November 1, 1982 – November 30, 1982
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1981 – September 30, 1982
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 30, 1980 – October 29, 1981
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Arsenic
October 1, 1980 – September 30, 1981
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
November 1, 1989 – November 30, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
September 1, 1989 – September 30, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1989 – August 31, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1989 – July 31, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1989 – June 30, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
May 1, 1989 – May 31, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1989 – April 30, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1989 – March 31, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1989 – February 28, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1989 – January 31, 1989	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
December 1, 1988 – December 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
November 1, 1988 – November 30, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1988 – October 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
September 1, 1988 – September 30, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1988 – August 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1988 – July 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1988 – June 30, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1988 – April 30, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1988 – March 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1988 – February 29, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1988 – January 31, 1988	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
November 1, 1987 – November 30, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1987 – October 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1987 – August 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1987 – July 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1987 – June 30, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
May 1, 1987 – May 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1987 – April 30, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1987 – March 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1987 – February 28, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1987 – January 31, 1987	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1986 – July 31, 1986	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1986 – June 30, 1986	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
May 1, 1986 – May 31, 1986	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1986 – April 30, 1986	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1986 – March 31, 1986	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
December 1, 1985 – December 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
November 1, 1985 – November 30, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1985 – October 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
September 1, 1985 – September 30, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1985 – August 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1985 – July 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1985 – March 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1985 – February 28, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1985 – December 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1985 – January 31, 1985	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
December 1, 1984 – December 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
November 1, 1984 – November 30, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1984 – October 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
September 1, 1984 – September 30, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1984 – August 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1984 – July 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1984 – June 30, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
May 1, 1984 – May 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1984 – April 30, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1984 – March 31, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1984 – February 29, 1984	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
December 1, 1983 – December 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1983 – October 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
September 1, 1983 – September 30, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
August 1, 1983 – August 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
July 1, 1983 – July 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
June 1, 1983 – June 30, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
May 1, 1983 – May 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
April 1, 1983 – April 30, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
March 1, 1983 – March 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
February 1, 1983 – February 28, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
January 1, 1983 – January 31, 1983	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
December 1, 1982 – December 31, 1982	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
November 1, 1982 – November 30, 1982	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1981 – September 30, 1982	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 30, 1980 – October 29, 1981	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved
October 1, 1980 – September 30, 1981	Maximum Contaminant Level Violation, Single Sample	Arsenic	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

March 4, 2013State Compliance achieved8 linked violations
March 9, 2011Federal Compliance achieved98 linked violations
December 10, 2009State Administrative/Compliance Order without penalty issued5 linked violations
September 13, 2006Federal Final Administrative Order issued97 linked violations
December 22, 1986State Administrative/Compliance Order without penalty issued3 linked violations
December 22, 1986State Administrative/Compliance Order without penalty issued5 linked violations
September 30, 1986State Other6 linked violations
July 3, 1986State Administrative/Compliance Order without penalty issued1 linked violation

Contact

SENTENO, FRANK

559-585-2567

HANFORD, CA 93230