Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WI4080271
PWS Name	SHERWOOD WATERWORKS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	3114
County Served	Calumet

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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2600065	Known	01-OCT-2025	31-DEC-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2600064	Known	01-OCT-2025	31-DEC-2025	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	2500060	Returned to Compliance	17-OCT-2024	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2500061	Returned to Compliance	17-OCT-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	2500059	Returned to Compliance	01-OCT-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1300031	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1300032	Returned to Compliance	01-JUL-2013	30-SEP-2013	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1200030	Returned to Compliance	01-OCT-2012	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1200029	Returned to Compliance	01-APR-2012	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	1100028	Returned to Compliance	01-OCT-2011	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	0900025	Known	01-AUG-2009	31-AUG-2009	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0900027	Known	01-JUL-2009	30-SEP-2009	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900026	Open	12-JUN-2009	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0900024	Returned to Compliance	01-APR-2009	30-JUN-2009	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900023	Open	02-MAR-2009	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0900021	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900022	Open	03-DEC-2008	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0900020	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0900019	Open	05-SEP-2008	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800018	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0800017	Open	28-MAY-2008	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0800015	Returned to Compliance	03-APR-2008	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800014	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800013	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0800012	Returned to Compliance	20-DEC-2007	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0800011	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0700009	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0700010	Returned to Compliance	26-MAR-2007	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0700008	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0700007	Returned to Compliance	10-AUG-2006	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0600005	Returned to Compliance	01-JUL-2006	30-SEP-2006	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0600006	Returned to Compliance	28-JUN-2006	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0600004	Returned to Compliance	01-APR-2006	30-JUN-2006	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9400002	Returned to Compliance	01-AUG-1994	31-AUG-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9414183	Known	01-AUG-1994	31-AUG-1994	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	9400003	Returned to Compliance	01-JUL-1993	-	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	9400001	Returned to Compliance	01-JUL-1993	24-FEB-1994	No

1 - 37 of 37

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2600553	2600064	SIE	State Public Notification requested	10-DEC-2025	State	-
2600553	2600065	SIE	State Public Notification requested	10-DEC-2025	State	-
2500549	2500060	SOX	State Compliance achieved	25-AUG-2025	State	-
2500548	2500059	SOX	State Compliance achieved	15-JUL-2025	State	-
2500545	2500061	SOX	State Compliance achieved	30-JUN-2025	State	-
1400519	1300032	SIF	State Public Notification received	09-JUN-2014	State	-
1400518	1300031	SIF	State Public Notification received	09-JUN-2014	State	-
1300507	1100028	SIF	State Public Notification received	27-JUN-2013	State	-
1400515	1200030	SOX	State Compliance achieved	27-JUN-2013	State	-
1400514	1200029	SOX	State Compliance achieved	31-JUL-2012	State	-
1100495	0700009	SOX	State Compliance achieved	15-JUL-2011	State	-
1100494	0700008	SOX	State Compliance achieved	15-JUL-2011	State	-
1100493	0600005	SOX	State Compliance achieved	15-JUL-2011	State	-
1100498	0900024	SOX	State Compliance achieved	15-JUL-2011	State	-
1100488	0800011	SOX	State Compliance achieved	15-JUL-2011	State	-
1100489	0800013	SOX	State Compliance achieved	15-JUL-2011	State	-
1100490	0800014	SOX	State Compliance achieved	15-JUL-2011	State	-
1100491	0800018	SOX	State Compliance achieved	15-JUL-2011	State	-
1100492	0600004	SOX	State Compliance achieved	15-JUL-2011	State	-
1100497	0900021	SOX	State Compliance achieved	15-JUL-2011	State	-
1100496	0900020	SOX	State Compliance achieved	15-JUL-2011	State	-
1900524	0900026	SO6	State Intentional no-action	22-FEB-2011	State	-
1900523	0900023	SO6	State Intentional no-action	22-FEB-2011	State	-
1900522	0900022	SO6	State Intentional no-action	22-FEB-2011	State	-
1900521	0900019	SO6	State Intentional no-action	22-FEB-2011	State	-
1900520	0800017	SO6	State Intentional no-action	22-FEB-2011	State	-
1900525	0800015	SO6	State Intentional no-action	22-FEB-2011	State	-
1900528	0800012	SO6	State Intentional no-action	22-FEB-2011	State	-
1900530	0700007	SO6	State Intentional no-action	22-FEB-2011	State	-
1900531	0600006	SO6	State Intentional no-action	22-FEB-2011	State	-
1900527	0700010	SOX	State Compliance achieved	22-FEB-2011	State	-
1000091	0900027	SIF	State Public Notification received	21-JUN-2010	State	-
1000091	0900025	SIF	State Public Notification received	21-JUN-2010	State	-
9500001	9400002	SIA	State Violation/Reminder Notice	18-MAY-1995	State	-
94E0001	9400001	SOX	State Compliance achieved	24-FEB-1994	State	-
9400004	9400003	SOX	State Compliance achieved	31-DEC-1993	State	-

1 - 36 of 36

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
7	7	Yes	Consecutive Connection	Surface water	Permanent	Active
BF263	3	Yes	Well	Ground water	Permanent	Inactive
BF262	1	Yes	Well	Ground water	Permanent	Inactive
DC728	5	Yes	Well	Ground water	Emergency	Inactive
KW593	6	Yes	Well	Ground water	Emergency	Active
40802718	40802718	No	Distribution System/Zone	-	-	Active
200	200	No	Other	-	-	Inactive
7	7T	No	Treatment Plant	-	-	Active
200	200T	No	Treatment Plant	-	-	Inactive

1 - 9 of 9

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
200	200T	Aeration, Packed Tower	Taste / odor control
200	200T	Gaseous Chlorination, Post	Disinfection
200	200T	pH Adjustment, Post	Corrosion control
7	7T	Inhibitor, Orthophosphate	Corrosion control
7	7T	Innovative	Organics 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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