Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AZ0408040
PWS Name	EPCOR - WILLOW VALLEY/KING STREET
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	3408
County Served	Mohave

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	9286	Open	02-JUL-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	9284	Returned to Compliance	01-APR-2025	30-APR-2025	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	9282	Returned to Compliance	01-DEC-2022	31-DEC-2022	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	9281	Returned to Compliance	01-JUN-2022	30-JUN-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	9279	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9280	Returned to Compliance	01-OCT-2021	31-DEC-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9277	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9235	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	9232	Returned to Compliance	01-JUL-2015	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	9209	Returned to Compliance	01-JAN-2013	31-MAR-2013	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9210	Returned to Compliance	01-JAN-2013	31-MAR-2013	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	9138	Returned to Compliance	01-JAN-2012	31-MAR-2012	Yes
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	9164	Returned to Compliance	01-OCT-2011	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9205	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9212	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	9211	Returned to Compliance	01-APR-2010	30-JUN-2010	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	9162	Returned to Compliance	01-JUL-2009	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	9122	Returned to Compliance	01-JUL-2007	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9121	Returned to Compliance	01-MAY-2007	31-MAY-2007	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9124	Returned to Compliance	01-APR-2007	30-JUN-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9116	Returned to Compliance	01-OCT-2006	31-OCT-2006	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9179	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9107	Returned to Compliance	01-AUG-2006	31-AUG-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	9108	Returned to Compliance	01-JUL-2006	30-SEP-2006	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	9161	Returned to Compliance	01-JUL-2006	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8806	Returned to Compliance	01-MAY-2006	31-MAY-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	8906	Returned to Compliance	01-APR-2006	30-JUN-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8706	Returned to Compliance	01-APR-2006	30-APR-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8306	Returned to Compliance	01-MAR-2006	31-MAR-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8006	Returned to Compliance	01-FEB-2006	28-FEB-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	8406	Returned to Compliance	01-JAN-2006	31-MAR-2006	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9118	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	9119	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	9120	Returned to Compliance	01-JAN-2006	31-DEC-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9111	Returned to Compliance	01-JAN-2006	31-JAN-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9113	Returned to Compliance	01-DEC-2005	31-DEC-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9112	Returned to Compliance	01-NOV-2005	30-NOV-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7606	Returned to Compliance	01-OCT-2005	31-DEC-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9114	Returned to Compliance	01-OCT-2005	31-OCT-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7206	Returned to Compliance	01-SEP-2005	30-SEP-2005	No
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	6906	Returned to Compliance	01-AUG-2005	31-AUG-2005	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7006	Returned to Compliance	01-AUG-2005	31-AUG-2005	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	6305	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	6805	Returned to Compliance	01-APR-2005	30-APR-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3805	Returned to Compliance	01-APR-2005	30-JUN-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2405	Returned to Compliance	01-MAR-2005	31-MAR-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2305	Returned to Compliance	01-FEB-2005	28-FEB-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	8106	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	8206	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	2205	Returned to Compliance	01-JAN-2005	31-JAN-2005	No

1 - 50 of 105

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
903	9284	SIF	State Public Notification received	30-MAY-2025	State	-
894	9282	SOX	State Compliance achieved	16-FEB-2023	State	Late data submitted 1/17/2023. Js26 2/16/2023
891	9281	SIA	State Violation/Reminder Notice	19-AUG-2022	State	-
888	9279	SIA	State Violation/Reminder Notice	17-MAR-2022	State	-
888	9280	SIA	State Violation/Reminder Notice	17-MAR-2022	State	-
887	9277	SOX	State Compliance achieved	28-MAY-2021	State	System submitted correct and accurate 1Q2021 MRDL report late on 5/28/21. KV3 6/1/2021
871	9235	SOX	State Compliance achieved	11-JAN-2016	State	-
869	9232	SOX	State Compliance achieved	24-JUL-2015	State	-
866	9212	SOX	State Compliance achieved	05-DEC-2014	State	-
866	9210	SOX	State Compliance achieved	05-DEC-2014	State	-
866	9211	SOX	State Compliance achieved	05-DEC-2014	State	-
866	9209	SOX	State Compliance achieved	05-DEC-2014	State	-
861	9138	SOX	State Compliance achieved	26-OCT-2012	State	-
864	9205	SOX	State Compliance achieved	11-OCT-2011	State	-
864	9164	SOX	State Compliance achieved	11-OCT-2011	State	-
863	9162	SOX	State Compliance achieved	14-JUL-2009	State	-
859	9121	SOX	State Compliance achieved	05-FEB-2008	State	-
857	1203	SOX	State Compliance achieved	26-DEC-2007	State	-
856	3505	SOX	State Compliance achieved	25-OCT-2007	State	-
856	8106	SOX	State Compliance achieved	25-OCT-2007	State	-
856	3405	SOX	State Compliance achieved	25-OCT-2007	State	-
856	8206	SOX	State Compliance achieved	25-OCT-2007	State	-
856	9120	SOX	State Compliance achieved	25-OCT-2007	State	-
856	9119	SOX	State Compliance achieved	25-OCT-2007	State	-
854	9124	SOX	State Compliance achieved	10-OCT-2007	State	-
855	9122	SOX	State Compliance achieved	29-AUG-2007	State	-
853	9118	SOX	State Compliance achieved	05-JUL-2007	State	-
849	9116	SOX	State Compliance achieved	04-JUN-2007	State	-
848	7006	SOX	State Compliance achieved	29-MAY-2007	State	-
848	7206	SOX	State Compliance achieved	29-MAY-2007	State	-
848	9114	SOX	State Compliance achieved	29-MAY-2007	State	-
848	9113	SOX	State Compliance achieved	29-MAY-2007	State	-
848	9112	SOX	State Compliance achieved	29-MAY-2007	State	-
848	9111	SOX	State Compliance achieved	29-MAY-2007	State	-
848	9107	SOX	State Compliance achieved	29-MAY-2007	State	-
848	8806	SOX	State Compliance achieved	29-MAY-2007	State	-
848	8706	SOX	State Compliance achieved	29-MAY-2007	State	-
848	6906	SOX	State Compliance achieved	29-MAY-2007	State	-
848	8006	SOX	State Compliance achieved	29-MAY-2007	State	-
848	8306	SOX	State Compliance achieved	29-MAY-2007	State	-
832	9179	SOX	State Compliance achieved	09-APR-2007	State	-
832	8406	SOX	State Compliance achieved	09-APR-2007	State	-
832	8906	SOX	State Compliance achieved	09-APR-2007	State	-
832	9108	SOX	State Compliance achieved	09-APR-2007	State	-
817	1102	SOX	State Compliance achieved	06-DEC-2006	State	-
806	1404	SOX	State Compliance achieved	14-NOV-2006	State	-
806	1504	SOX	State Compliance achieved	14-NOV-2006	State	-
806	1604	SOX	State Compliance achieved	14-NOV-2006	State	-
806	1705	SOX	State Compliance achieved	14-NOV-2006	State	-
806	1805	SOX	State Compliance achieved	14-NOV-2006	State	-

1 - 50 of 96

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WL-55-208170 - UNIT 17 - 2	21005	Yes	Well	Ground water	Interim	Active
XWL-55-603948 - MEADOWLARK	4926	Yes	Well	Ground water	Permanent	Inactive
XWL-55-603947 - KING ST	4924	Yes	Well	Ground water	Permanent	Inactive
XWL-55-603946 - CENTRAL	4923	Yes	Well	Ground water	Permanent	Inactive
WL-55-603949 - 17	4920	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	13247	No	Distribution System/Zone	-	-	Active
EPDS003	9605	No	Sampling Station	-	-	Active
XEPDS002	16980	No	Sampling Station	-	-	Inactive
XEPHIS	17600	No	Sampling Station	-	-	Inactive
XEPDS001	9604	No	Sampling Station	-	-	Inactive
STORAGE TANK 001 - 125,000	22569	No	Storage	-	-	Active
STORAGE TANK 002 - 300,000	26875	No	Storage	-	-	Active
XSTORAGE TANK 002 - 169,000	22570	No	Storage	-	-	Inactive
TP003 - CL2, CLO2, FE, MN	16034	No	Treatment Plant	-	-	Active
XTP002 - 4-LOG	25133	No	Treatment Plant	-	-	Inactive
XTP001 - FE, MN, CL2	757	No	Treatment Plant	-	-	Inactive

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TP003 - CL2, CLO2, FE, MN	16034	Hypochlorination, Post	Disinfection
TP003 - CL2, CLO2, FE, MN	16034	Hypochlorination, Pre	Iron removal
TP003 - CL2, CLO2, FE, MN	16034	Chlorine Dioxide	Disinfection by-products control
TP003 - CL2, CLO2, FE, MN	16034	Gaseous Chlorination, Pre	Disinfection
XTP002 - 4-LOG	25133	4-Log Treatment of Viruses	Disinfection
XTP001 - FE, MN, CL2	757	Filtration, Pressure Sand	Particulate removal
XTP001 - FE, MN, CL2	757	Hypochlorination, Pre	Disinfection
XTP001 - FE, MN, CL2	757	Hypochlorination, Post	Disinfection
XTP001 - FE, MN, CL2	757	Chlorine Dioxide	Disinfection
XTP001 - FE, MN, CL2	757	Coagulation	Iron removal

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For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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