Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WI2681741
PWS Name	MUSKEGO WATER UTILITY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	8150
County Served	Waukesha

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
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	2500127	Returned to Compliance	17-OCT-2024	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2500128	Open	17-OCT-2024	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	2400109	Returned to Compliance	01-JAN-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2400110	Open	01-JUL-2023	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	2300108	Returned to Compliance	01-APR-2023	30-JUN-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	1800095	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1800093	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1800094	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	1800102	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1800092	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	1800097	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	1800091	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	1800099	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	OXAMYL	1800100	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	1800101	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	1800098	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	1800096	Returned to Compliance	01-JAN-2017	31-DEC-2017	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-226	1600089	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Radium-228	1600088	Returned to Compliance	01-JAN-2016	31-MAR-2016	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1600085	Returned to Compliance	01-OCT-2015	31-DEC-2015	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	1600086	Returned to Compliance	01-OCT-2015	31-OCT-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1500078	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1500077	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0800032	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0500020	Returned to Compliance	01-JUN-2005	30-JUN-2005	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	0400071	Returned to Compliance	01-OCT-2003	31-DEC-2003	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9500001	Returned to Compliance	01-APR-1995	30-APR-1995	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9500021	Returned to Compliance	01-NOV-1994	30-NOV-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9500023	Returned to Compliance	01-OCT-1994	31-OCT-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9400022	Returned to Compliance	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	9303062	Returned to Compliance	01-OCT-1992	31-OCT-1992	No

1 - 31 of 31

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2500102	2500127	SOX	State Compliance achieved	19-MAY-2025	State	-
2500096	2300108	SIE	State Public Notification requested	11-MAR-2025	State	-
2500094	2400110	SIA	State Violation/Reminder Notice	11-MAR-2025	State	-
2400088	2400109	SIA	State Violation/Reminder Notice	17-APR-2024	State	-
1800085	1800099	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800100	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800101	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800098	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800102	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800097	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800096	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800095	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800091	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800092	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800093	SIF	State Public Notification received	29-JUN-2018	State	-
1800085	1800094	SIF	State Public Notification received	29-JUN-2018	State	-
1700082	1600089	SIF	State Public Notification received	30-MAR-2017	State	-
1700082	1600088	SIF	State Public Notification received	30-MAR-2017	State	-
1700081	1600086	SIF	State Public Notification received	01-JUL-2016	State	-
1700081	1600085	SIF	State Public Notification received	01-JUL-2016	State	-
1600074	1500078	SOX	State Compliance achieved	23-OCT-2015	State	-
1600073	1500077	SOX	State Compliance achieved	10-OCT-2015	State	-
0800023	0800032	SFG	State Public Notification issued	01-JUL-2008	State	-
0500007	0500020	SFG	State Public Notification issued	08-JUL-2005	State	-
0400009	0400071	SIF	State Public Notification received	19-APR-2004	State	-
9600001	9500001	SIA	State Violation/Reminder Notice	30-APR-1996	State	-
9500012	9500023	SOX	State Compliance achieved	31-DEC-1994	State	-
9500010	9500021	SOX	State Compliance achieved	31-DEC-1994	State	-
9400011	9400022	SOX	State Compliance achieved	31-AUG-1994	State	-
9303764	9303062	SIE	State Public Notification requested	27-JAN-1993	State	-

1 - 30 of 30

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
IZ381	5	Yes	Well	Ground water	Emergency	Inactive
IZ382	6	Yes	Well	Ground water	Permanent	Inactive
IZ390	4	Yes	Well	Ground water	Permanent	Inactive
HJ114	12	Yes	Well	Ground water	Permanent	Inactive
BH440	1	Yes	Well	Ground water	Permanent	Inactive
VL963	9	Yes	Well	Ground water	Permanent	Active
JD353	8	Yes	Well	Ground water	Permanent	Active
KW594	7	Yes	Well	Ground water	Permanent	Active
IZ389	3	Yes	Well	Ground water	Permanent	Active
BH441	2	Yes	Well	Ground water	Permanent	Active
WI692	13	Yes	Well	Ground water	Permanent	Active
LK004	11	Yes	Well	Ground water	Permanent	Active
HJ186	10	Yes	Well	Ground water	Permanent	Active
26817417	26817417	No	Distribution System/Zone	-	-	Active
HJ186	10T	No	Treatment Plant	-	-	Active
LK004	11T	No	Treatment Plant	-	-	Active
WI692	13T	No	Treatment Plant	-	-	Active
BH441	2T	No	Treatment Plant	-	-	Active
IZ389	3T	No	Treatment Plant	-	-	Active
KW594	7T	No	Treatment Plant	-	-	Active
JD353	8T	No	Treatment Plant	-	-	Active
VL963	9T	No	Treatment Plant	-	-	Active
HJ114	12T	No	Treatment Plant	-	-	Inactive
IZ390	4T	No	Treatment Plant	-	-	Inactive
IZ381	5T	No	Treatment Plant	-	-	Inactive
IZ382	6T	No	Treatment Plant	-	-	Inactive

1 - 26 of 26

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
HJ186	10T	Hypochlorination, Post	Disinfection
LK004	11T	Hypochlorination, Post	Disinfection
HJ114	12T	Hypochlorination, Post	Disinfection
WI692	13T	Hypochlorination, Post	Disinfection
BH441	2T	Hypochlorination, Post	Disinfection
BH441	2T	Sequestration	Iron removal
IZ389	3T	Hypochlorination, Post	Disinfection
IZ389	3T	Sequestration	Iron removal
IZ390	4T	Hypochlorination, Post	Disinfection
IZ381	5T	Hypochlorination, Post	Disinfection
IZ381	5T	Sequestration	Iron removal
IZ382	6T	Hypochlorination, Post	Disinfection
KW594	7T	Hypochlorination, Post	Disinfection
KW594	7T	Sequestration	Iron removal
JD353	8T	Hypochlorination, Post	Disinfection
VL963	9T	Hypochlorination, Post	Disinfection
VL963	9T	Sequestration	Iron removal

1 - 17 of 17

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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