Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AZ0408015
PWS Name	EPCOR - LAKE HAVASU
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4788
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
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7193	Returned to Compliance	30-JUL-2025	-	No
RPT	Notification, Known or Potential LSL	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	7194	Open	02-JUL-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7192	Returned to Compliance	02-JUL-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7189	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	7190	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	7188	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	7185	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7187	Returned to Compliance	01-AUG-2021	31-JUL-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7186	Returned to Compliance	01-AUG-2021	31-JUL-2022	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7122	Returned to Compliance	01-JUL-2012	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7117	Returned to Compliance	01-NOV-2008	30-NOV-2008	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	7108	Returned to Compliance	01-JUL-2007	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	7115	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	7116	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	5905	Returned to Compliance	01-JUL-2005	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	5605	Returned to Compliance	01-JUL-2004	30-SEP-2004	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6705	Returned to Compliance	01-JUL-2004	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	5305	Returned to Compliance	01-APR-2004	30-JUN-2004	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	5004	Returned to Compliance	01-JAN-2004	31-MAR-2004	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	6505	Returned to Compliance	01-JUL-2002	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	203	Returned to Compliance	01-JAN-2002	31-DEC-2002	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	2401	Returned to Compliance	01-OCT-2000	31-DEC-2000	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	2601	Returned to Compliance	01-OCT-2000	31-DEC-2000	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	199	Returned to Compliance	01-APR-1999	30-JUN-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	4400	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	4300	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	4200	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	4100	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	4000	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	3900	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	4500	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	4600	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	4700	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	4800	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	3800	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	2700	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	2900	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	3700	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	3600	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	3500	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	3400	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	3300	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	3200	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	3000	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endothall	3100	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	2800	Returned to Compliance	01-JAN-1999	31-DEC-1999	No
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	4999	Returned to Compliance	17-NOV-1998	01-DEC-1998	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	2399	Returned to Compliance	01-OCT-1998	31-DEC-1998	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	2599	Returned to Compliance	01-OCT-1998	31-DEC-1998	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	399	Returned to Compliance	01-JAN-1998	31-DEC-1998	No

1 - 50 of 79

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3816	7189	SIF	State Public Notification received	25-SEP-2025	State	-
3818	7190	SIF	State Public Notification received	25-SEP-2025	State	-
3811	7192	SIA	State Violation/Reminder Notice	02-SEP-2025	State	-
3813	7193	SIA	State Violation/Reminder Notice	02-SEP-2025	State	-
3810	7188	SIF	State Public Notification received	06-SEP-2024	State	-
3796	7186	SOX	State Compliance achieved	20-JUN-2023	State	Late data submitted 5/12/2023. JS26 6/20/2023
3796	7187	SOX	State Compliance achieved	20-JUN-2023	State	Late data submitted 5/12/2023. JS26 6/20/2023
3791	7185	SOX	State Compliance achieved	13-FEB-2023	State	Q4 2022 submitted on-time 1/9/2023. JS26 2/13/2023
3777	7122	SOX	State Compliance achieved	12-JUL-2012	State	-
3768	7117	SOX	State Compliance achieved	14-JAN-2009	State	-
3767	7115	SOX	State Compliance achieved	21-APR-2008	State	-
3767	7116	SOX	State Compliance achieved	21-APR-2008	State	-
3766	7108	SOX	State Compliance achieved	29-FEB-2008	State	-
3757	4999	SOX	State Compliance achieved	06-DEC-2006	State	-
3709	199	SOX	State Compliance achieved	06-DEC-2006	State	-
3605	5004	SIA	State Violation/Reminder Notice	30-AUG-2005	State	-
3605	5305	SIA	State Violation/Reminder Notice	30-AUG-2005	State	-
3605	5605	SIA	State Violation/Reminder Notice	30-AUG-2005	State	-
3758	5905	SOX	State Compliance achieved	05-AUG-2005	State	-
3779	2800	SOX	State Compliance achieved	14-FEB-2005	State	-
3763	6705	SOX	State Compliance achieved	24-SEP-2004	State	-
1303	203	SOX	State Compliance achieved	09-APR-2003	State	AUTO RTC
3761	6505	SOX	State Compliance achieved	30-JUL-2002	State	-
3002	999	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1099	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1199	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1299	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1399	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1499	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1599	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1699	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1799	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1899	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	1999	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	2099	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	2199	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
3002	2299	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2902	2399	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
1202	2401	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
1502	2601	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2102	2700	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2302	2900	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2402	3000	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2502	3100	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2602	3200	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2702	3300	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
2802	3400	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
1402	3500	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
1802	3600	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL
1702	3700	SOX	State Compliance achieved	27-NOV-2001	State	RETURN TO COMPLIANCE, SYSTEM LOADED, HISTORICAL

1 - 50 of 68

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
XWL-55-512988 - 8	7120	Yes	Well	Ground water	Emergency	Inactive
XWL-55-539646 - 7	7084	Yes	Well	Ground water	Permanent	Inactive
XWL-55-601833 - 5	5595	Yes	Well	Ground water	Permanent	Inactive
XWL-55-601832 - 4	5594	Yes	Well	Ground water	Permanent	Inactive
XWL-55-601830 - 2	5593	Yes	Well	Ground water	Permanent	Inactive
XWL-55-601829 - 1	5592	Yes	Well	Ground water	Permanent	Inactive
WL-55-594370 - 9	8325	Yes	Well	Ground water	Permanent	Active
WL-55-221932 - 10	24887	Yes	Well	Ground water	Permanent	Active
XWL-55-601831 - 3	8028	Yes	Well	Ground water	Emergency	Inactive
DISTRIBUTION SYSTEM	14130	No	Distribution System/Zone	-	-	Active
EPDS002	9568	No	Sampling Station	-	-	Active
XEPDS001	173	No	Sampling Station	-	-	Inactive
XEPHIS	17582	No	Sampling Station	-	-	Inactive
ST004 - 125,000	20629	No	Storage	-	-	Active
STNP4-1 SAND VESSEL	20630	No	Storage	-	-	Active
ST002 - 250,000	20631	No	Storage	-	-	Active
ST001 - 500,000	20632	No	Storage	-	-	Active
ST003 - 750,000	20633	No	Storage	-	-	Active
STNP-1 BACKWASH	20634	No	Storage	-	-	Active
TP002 - CL2, AS	929	No	Treatment Plant	-	-	Active
XTP001 - CL2	15996	No	Treatment Plant	-	-	Inactive

1 - 21 of 21

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
XTP001 - CL2	15996	Gaseous Chlorination, Post	Disinfection
XTP001 - CL2	15996	Coagulation	Disinfection by-products control
TP002 - CL2, AS	929	Gaseous Chlorination, Post	Disinfection
TP002 - CL2, AS	929	Filtered	Inorganics removal
TP002 - CL2, AS	929	Coagulation	Inorganics removal

1 - 5 of 5

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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