SOMERTON, 09

Cocopah North Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of March 1, 2002. 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 09.

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 EPA Region 9’s official records. Always confirm current status with EPA Region 9 before making decisions based on this information.

System facts

System ID (PWSID): 090400072
System type: Community Water System
Population served: 150
Service connections: 18
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1998 – March 1, 2002
Archived
Monitoring, Regular
—
Nitrate
January 1, 1998 – December 31, 1998
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1997 – May 31, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1997 – April 30, 1997
Archived
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1996 – November 30, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1996 – October 31, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1996 – September 30, 1996
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1996 – March 1, 2002
Archived
Monitoring, Regular
—
Barium
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Selenium
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Mercury
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Fluoride
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Chromium
January 1, 1996 – December 31, 1996
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1996 – March 1, 2002
Archived
Monitoring, Regular
—
Cadmium
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 1996 – December 31, 1996
Archived
Monitoring, Regular
—
CYANIDE
January 1, 1996 – December 31, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1994 – June 30, 1994
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1994 – May 31, 1994
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
February 1, 1994 – February 28, 1994
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
January 1, 1993 – January 31, 1993
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 1998 – March 1, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Archived
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nitrate	—	Archived
May 1, 1997 – May 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
April 1, 1997 – April 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Archived
November 1, 1996 – November 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1996 – October 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
September 1, 1996 – September 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1996 – March 1, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Barium	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Selenium	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Mercury	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Fluoride	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Chromium	—	Archived
January 1, 1996 – March 1, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Cadmium	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 1996 – December 31, 1996	Monitoring, Regular	CYANIDE	—	Archived
June 1, 1994 – June 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1994 – May 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 1994 – February 28, 1994	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1993 – January 31, 1993	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

November 15, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
November 1, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
October 31, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
August 18, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
August 17, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
August 4, 2005Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record

Last known contact on file (system is inactive)

Not on record

Phone not on record

SOMERTON, AZ 85350