WILLIAMS, AZ · Coconino County

WILLIAMS 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): AZ0403026
System type: Community Water System
Population served: 3,145
Service connections: 1,883
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2025 – December 31, 2025
Archived
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 2, 2023 – September 30, 2024
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2017 – January 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
TTHM
November 1, 2016 – January 31, 2017
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2016 – December 31, 2016
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2015 – February 10, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2015 – April 30, 2015
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2015 – April 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2014 – September 30, 2014
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2014 – June 30, 2014
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2014 – May 31, 2014
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2011 – January 13, 2012
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2011 – December 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2010 – September 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2010 – September 30, 2010
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – January 13, 2012
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2010 – June 30, 2010
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2009 – November 4, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2008 – June 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2007 – December 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2005 – September 30, 2005
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Gross Alpha, Excl. Radon and U
July 31, 1988 – July 30, 1992
Archived
Monitoring, Regular
—
2,4,5-TP
July 1, 1988 – September 30, 1988
Archived
Monitoring, Regular
—
BHC-GAMMA
July 1, 1988 – September 30, 1988
Archived
Monitoring, Regular
—
Methoxychlor
July 1, 1988 – September 30, 1988
Archived
Monitoring, Regular
—
2,4-D
July 1, 1988 – September 30, 1988
Archived
Monitoring, Regular
—
Toxaphene
July 1, 1988 – September 30, 1988
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Gross Alpha, Excl. Radon and U
January 1, 1988 – March 31, 1988
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Benzene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Toluene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Styrene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1987 – July 1, 1990
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1987 – July 1, 1990
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
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

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

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2025 – December 31, 2025	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Archived
October 2, 2023 – September 30, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2017 – January 31, 2017	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
November 1, 2016 – January 31, 2017	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2015 – February 10, 2016	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
April 1, 2015 – April 30, 2015	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2015 – April 30, 2015	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2014 – June 30, 2014	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2014 – May 31, 2014	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
October 1, 2011 – January 13, 2012	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2010 – January 13, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2009 – November 4, 2009	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
December 1, 2007 – December 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 31, 1988 – July 30, 1992	Maximum Contaminant Level Violation, Single Sample	Gross Alpha, Excl. Radon and U	Health-based	Archived
July 1, 1988 – September 30, 1988	Monitoring, Regular	2,4,5-TP	—	Archived
July 1, 1988 – September 30, 1988	Monitoring, Regular	BHC-GAMMA	—	Archived
July 1, 1988 – September 30, 1988	Monitoring, Regular	Methoxychlor	—	Archived
July 1, 1988 – September 30, 1988	Monitoring, Regular	2,4-D	—	Archived
July 1, 1988 – September 30, 1988	Monitoring, Regular	Toxaphene	—	Archived
January 1, 1988 – March 31, 1988	Maximum Contaminant Level Violation, Single Sample	Gross Alpha, Excl. Radon and U	Health-based	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Benzene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Toluene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Styrene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1987 – July 1, 1990	Monitoring, Regular	1,1,2-Trichloroethane	—	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
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

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

Enforcement actions

September 26, 2014State Violation/Reminder Notice115 linked violations
June 23, 2005State Compliance achieved133 linked violations
September 12, 1979State Othergeneral compliance action — not tied to a specific violation on record

Contact

DENT, D

928-635-4451

WILLIAMS, AZ 86046