Is CS MOHAWK UTILITY COMPANY required to publish a Consumer Confidence Report?

Yes. CS MOHAWK UTILITY COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is CS MOHAWK UTILITY COMPANY’s next Consumer Confidence Report due?

CS MOHAWK UTILITY COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

DES PERES, AZ · Yuma County

CS MOHAWK UTILITY COMPANY Water System

Consumer Confidence Report status

CS MOHAWK UTILITY COMPANY must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for CS MOHAWK UTILITY COMPANY.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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): AZ0414030
System type: Community Water System
Population served: 243
Service connections: 135
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

CS MOHAWK UTILITY COMPANY is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 243 people from surface water.

As of August 1, 2026, its federal record holds 74 entries between 1978 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 74, 71 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Surface Water Treatment Rules, inorganic chemicals, and synthetic organic chemicals.

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2023 – September 30, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2021 – March 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
TTHM
September 1, 2020 – November 30, 2020
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2020 – July 31, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 30, 2020 – September 25, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2019 – November 30, 2019
Resolved
Monitoring and Reporting (DBP)
—
TTHM
March 1, 2019 – May 31, 2019
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2019 – February 28, 2019
Resolved
Monitoring and Reporting (DBP)
—
TTHM
December 1, 2018 – February 28, 2019
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – November 8, 2021
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2018 – June 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2018 – January 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
December 24, 2017 – January 24, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2017 – November 30, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2017 – May 31, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2015 – June 30, 2015
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2015 – June 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2015 – May 31, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – November 29, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2014 – February 28, 2014
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2013 – July 31, 2013
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2013 – June 30, 2013
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2013 – February 28, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2012 – December 31, 2012
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2012 – July 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2012 – April 30, 2012
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2012 – February 29, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2010 – December 31, 2010
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2009 – April 30, 2009
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2009 – February 28, 2009
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2008 – November 19, 2009
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2008 – October 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2007 – March 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2006 – October 31, 2006
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2005 – November 19, 2009
Resolved
Monitoring, Regular
—
Fluoride
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Barium
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Mercury
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Selenium
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Arsenic
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Cadmium
March 31, 1990 – March 30, 1991
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1989 – September 30, 1989
Archived
Monitoring, Regular
—
2,4-D
April 30, 1989 – April 29, 1992
Archived
Monitoring, Regular
—
2,4,5-TP
April 30, 1989 – April 29, 1992
Archived
Monitoring, Regular
—
BHC-GAMMA
April 30, 1989 – April 29, 1992
Archived
Monitoring, Regular
—
Toxaphene
April 30, 1989 – April 29, 1992
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
February 23, 1989 – February 22, 1993
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Benzene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Styrene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Selenium
June 25, 1981 – June 24, 1982
Archived
Monitoring, Regular
—
Nitrate
June 25, 1981 – June 24, 1982
Archived
Monitoring, Regular
—
Arsenic
June 25, 1981 – June 24, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1980 – June 30, 1984
Archived
Monitoring, Regular
—
Nitrate
June 24, 1980 – June 23, 1981
Archived
Monitoring, Regular
—
Arsenic
June 24, 1980 – June 23, 1981
Archived
Monitoring, Regular
—
Selenium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Cadmium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Barium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Arsenic
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
2,4-D
June 24, 1978 – June 23, 1981
Archived
Monitoring, Regular
—
2,4,5-TP
June 24, 1978 – June 23, 1981
Archived
Monitoring, Regular
—
Endrin
June 24, 1978 – June 23, 1981
Archived
Monitoring, Regular
—
BHC-GAMMA
June 24, 1978 – June 23, 1981
Archived
Monitoring, Regular
—
Methoxychlor
June 24, 1978 – June 23, 1981
Archived
Monitoring, Regular
—
Toxaphene
June 24, 1978 – June 23, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2021 – March 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
September 1, 2020 – November 30, 2020	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2020 – July 31, 2020	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 30, 2020 – September 25, 2021	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 1, 2019 – November 30, 2019	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2019 – May 31, 2019	Monitoring and Reporting (DBP)	TTHM	—	Resolved
February 1, 2019 – February 28, 2019	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 1, 2018 – February 28, 2019	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2018 – November 8, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2018 – June 30, 2018	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2018 – January 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
December 24, 2017 – January 24, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
November 1, 2017 – November 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
June 1, 2015 – June 30, 2015	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
June 1, 2015 – June 30, 2015	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2015 – May 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2014 – November 29, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2014 – February 28, 2014	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2013 – July 31, 2013	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
June 1, 2013 – June 30, 2013	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
February 1, 2013 – February 28, 2013	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 1, 2012 – December 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2012 – July 31, 2012	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
May 1, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2012 – April 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2012 – February 29, 2012	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2009 – April 30, 2009	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2009 – February 28, 2009	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2008 – November 19, 2009	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2008 – October 31, 2008	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2007 – March 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2006 – October 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2005 – November 19, 2009	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
March 31, 1990 – March 30, 1991	Monitoring, Regular	Fluoride	—	Archived
March 31, 1990 – March 30, 1991	Monitoring, Regular	Barium	—	Archived
March 31, 1990 – March 30, 1991	Monitoring, Regular	Mercury	—	Archived
March 31, 1990 – March 30, 1991	Monitoring, Regular	Selenium	—	Archived
March 31, 1990 – March 30, 1991	Monitoring, Regular	Arsenic	—	Archived
March 31, 1990 – March 30, 1991	Monitoring, Regular	Cadmium	—	Archived
July 1, 1989 – September 30, 1989	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
April 30, 1989 – April 29, 1992	Monitoring, Regular	2,4-D	—	Archived
April 30, 1989 – April 29, 1992	Monitoring, Regular	2,4,5-TP	—	Archived
April 30, 1989 – April 29, 1992	Monitoring, Regular	BHC-GAMMA	—	Archived
April 30, 1989 – April 29, 1992	Monitoring, Regular	Toxaphene	—	Archived
February 23, 1989 – February 22, 1993	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Benzene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Styrene	—	Archived
June 25, 1981 – June 24, 1982	Monitoring, Regular	Selenium	—	Archived
June 25, 1981 – June 24, 1982	Monitoring, Regular	Nitrate	—	Archived
June 25, 1981 – June 24, 1982	Monitoring, Regular	Arsenic	—	Archived
July 1, 1980 – June 30, 1984	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
June 24, 1980 – June 23, 1981	Monitoring, Regular	Nitrate	—	Archived
June 24, 1980 – June 23, 1981	Monitoring, Regular	Arsenic	—	Archived
June 24, 1979 – June 23, 1980	Monitoring, Regular	Selenium	—	Archived
June 24, 1979 – June 23, 1980	Monitoring, Regular	Cadmium	—	Archived
June 24, 1979 – June 23, 1980	Monitoring, Regular	Barium	—	Archived
June 24, 1979 – June 23, 1980	Monitoring, Regular	Arsenic	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	2,4-D	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	2,4,5-TP	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	Endrin	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	BHC-GAMMA	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	Methoxychlor	—	Archived
June 24, 1978 – June 23, 1981	Monitoring, Regular	Toxaphene	—	Archived

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

Enforcement actions

March 13, 2026State Public Notification received35 linked violations
January 8, 2026State Public Notification received56 linked violations
November 27, 2018State Compliance achieved119 linked violations
June 8, 2018State Compliance achieved29 linked violations
March 6, 2015State Violation/Reminder Notice126 linked violations
February 22, 1993State Compliance achieved1 linked violation
September 30, 1980State Othergeneral compliance action — not tied to a specific violation on record
March 21, 1980State Othergeneral compliance action — not tied to a specific violation on record
January 25, 1980State Other1 linked violation

Common questions

Is CS MOHAWK UTILITY COMPANY required to publish a Consumer Confidence Report?: Yes. CS MOHAWK UTILITY COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CS MOHAWK UTILITY COMPANY’s next Consumer Confidence Report due?: CS MOHAWK UTILITY COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CS MOHAWK UTILITY COMPANY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CS MOHAWK UTILITY COMPANY.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

KRIESS, FRED

602-698-9786

DES PERES, MO 63131