MORGANN HILL, CA · Santa Clara County

CITY OF MORGAN HILL 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): CA4310006
System type: Community Water System
Population served: 47,374
Service connections: 15,003
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1988 – June 30, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1988 – May 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 1988 – April 30, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1988 – March 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1988 – February 29, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1988 – January 31, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
December 1, 1987 – December 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
November 1, 1987 – November 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1987 – October 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
September 1, 1987 – September 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 1987 – August 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1987 – July 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1987 – June 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1987 – May 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 1987 – April 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1987 – March 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1987 – February 28, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1987 – January 31, 1987
Archived
Monitoring, Regular
—
Nitrate
August 1, 1986 – August 31, 1986
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1986 – July 31, 1986
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1986 – June 30, 1986
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1986 – May 31, 1986
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1986 – February 28, 1986
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
September 1, 1985 – September 30, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 1985 – August 31, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1985 – July 31, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1985 – March 31, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1985 – January 31, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
December 1, 1984 – December 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1984 – October 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
September 1, 1984 – September 30, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 1984 – August 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1984 – July 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1984 – June 30, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1984 – May 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 1984 – April 30, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1984 – March 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1984 – February 29, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1984 – January 31, 1984
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
December 1, 1983 – December 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
November 1, 1983 – November 30, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1983 – October 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
September 1, 1983 – September 30, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 1983 – August 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1983 – July 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1983 – June 30, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1983 – May 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 1983 – April 30, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1983 – March 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
February 1, 1983 – February 28, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1983 – January 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
December 1, 1982 – December 31, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
November 1, 1982 – November 30, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1981 – September 30, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1980 – April 30, 1981
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 30, 1980 – October 29, 1980
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 28, 1980 – October 27, 1980
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
June 1, 1988 – June 30, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1988 – May 31, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 1988 – April 30, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1988 – March 31, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
February 1, 1988 – February 29, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1988 – January 31, 1988	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
December 1, 1987 – December 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
November 1, 1987 – November 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1987 – October 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
September 1, 1987 – September 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1987 – August 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 1987 – July 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
June 1, 1987 – June 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1987 – May 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 1987 – April 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1987 – March 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
February 1, 1987 – February 28, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1987 – January 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1986 – August 31, 1986	Monitoring, Regular	Nitrate	—	Archived
July 1, 1986 – July 31, 1986	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
June 1, 1986 – June 30, 1986	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1986 – May 31, 1986	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
February 1, 1986 – February 28, 1986	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
September 1, 1985 – September 30, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1985 – August 31, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 1985 – July 31, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1985 – March 31, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1985 – January 31, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
December 1, 1984 – December 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1984 – October 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
September 1, 1984 – September 30, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1984 – August 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 1984 – July 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
June 1, 1984 – June 30, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1984 – May 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 1984 – April 30, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1984 – March 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
February 1, 1984 – February 29, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1984 – January 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
December 1, 1983 – December 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
November 1, 1983 – November 30, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1983 – October 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
September 1, 1983 – September 30, 1983	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
August 1, 1983 – August 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 1983 – July 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
June 1, 1983 – June 30, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1983 – May 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 1983 – April 30, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1983 – March 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
February 1, 1983 – February 28, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1983 – January 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
December 1, 1982 – December 31, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
November 1, 1982 – November 30, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1981 – September 30, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 1, 1980 – April 30, 1981	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 30, 1980 – October 29, 1980	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 28, 1980 – October 27, 1980	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 11, 2024State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
October 3, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 30, 1999State Compliance achieved1 linked violation
December 17, 1993State Public Notification received4 linked violations
September 30, 1986State Administrative/Compliance Order without penalty issued3 linked violations
September 30, 1985State Formal Notice of Violation issued154 linked violations

Contact

SYLVAIN, JAMES

408-310-4166

MORGANN HILL, CA 95037