Drinking Water Compliance OS

SAN LUIS, AZ · Yuma County

SAN LUIS 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 Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.

System facts

System ID (PWSID)
AZ0414005
System type
Community Water System
Population served
39,705
Service connections
6,100
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Failure To Address Deficiency

    Health-based

    Groundwater Rule

    August 5, 2021 – November 12, 2021

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2019 – September 12, 2019

    Resolved
  • Monitoring, Source Water (GWR)

    E. COLI

    February 12, 2015 – November 8, 2017

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2012 – December 31, 2014

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    July 1, 2011 – September 30, 2011

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2011 – April 24, 2012

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    April 1, 2010 – June 30, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    January 1, 2010 – March 31, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    October 1, 2009 – December 31, 2009

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    January 1, 2009 – March 31, 2009

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    January 1, 2009 – March 31, 2009

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2008 – November 4, 2008

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2006 – July 7, 2008

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    2,3,7,8-TCDD

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Endothall

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Endothall

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Glyphosate

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    2,3,7,8-TCDD

    January 1, 2006 – December 31, 2008

    Resolved
  • Monitoring, Regular

    Radium-228

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Radium-226

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Radium-226

    January 1, 2004 – December 31, 2007

    Resolved
  • Monitoring, Regular

    Radium-228

    January 1, 2004 – December 31, 2007

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2003 – July 28, 2008

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2003 – April 27, 2004

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    CYANIDE

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2003 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2003 – December 31, 2003

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2003 – December 31, 2003

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2002 – April 27, 2004

    Resolved
  • Monitoring, Check/Repeat/Confirmation

    Antimony, Total

    June 24, 1999 – July 8, 1999

    Archived
  • Monitoring, Regular

    OXAMYL

    January 1, 1997 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 1997 – December 31, 1999

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 1997 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 1997 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    October 1, 1988 – December 31, 1988

    Archived
  • Monitoring, Regular

    Fluoride

    April 30, 1988 – April 29, 1991

    Archived
  • Monitoring, Regular

    Mercury

    April 30, 1988 – April 29, 1991

    Archived
  • Monitoring, Regular

    Nitrate

    April 30, 1988 – April 29, 1991

    Archived
  • Monitoring, Regular

    Arsenic

    April 30, 1988 – April 29, 1991

    Archived
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    June 1, 1980 – August 31, 1980

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

SAN LUIS CITY OF

928-341-8577

SAN LUIS, AZ 85349