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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WI8260120
PWS Name	MERCER SANITARY DISTRICT
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	760
County Served	Iron

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
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2300003	Returned to Compliance	01-FEB-2023	28-FEB-2023	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2200002	Returned to Compliance	01-OCT-2021	31-OCT-2021	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9700001	Returned to Compliance	01-NOV-1996	30-NOV-1996	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	9317800	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	9317801	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	9317802	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	9317803	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	9317805	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	9317820	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	9317807	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	9317808	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	9317809	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	9317810	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	9317811	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	9317813	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	9317815	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	9317816	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	9317817	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	9317818	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	9317796	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	9317795	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	9317784	Returned to Compliance	01-JAN-1993	31-DEC-1993	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	9317806	Returned to Compliance	01-JAN-1993	31-DEC-1993	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2300013	2300003	SOX	State Compliance achieved	14-MAR-2023	State	-
2200009	2200002	SIF	State Public Notification received	18-NOV-2021	State	-
9700005	9700001	SOX	State Compliance achieved	04-FEB-1997	State	-
94E0040	9317801	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317802	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317803	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317805	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317806	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317807	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317808	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317809	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317810	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317811	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317813	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317815	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317816	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317817	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317818	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317820	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317800	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317796	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317795	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST
94E0040	9317784	SOX	State Compliance achieved	16-MAY-1994	State	VOC CMPL ACH FOR MERCER SANITARY DIST

1 - 23 of 23

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BF974	2	Yes	Well	Ground water	Permanent	Active
BF973	1	Yes	Well	Ground water	Permanent	Inactive
TT959	3	Yes	Well	Ground water	Permanent	Active
82601200	82601200	No	Distribution System/Zone	-	-	Active
BF974	2T	No	Treatment Plant	-	-	Active
TT959	3T	No	Treatment Plant	-	-	Active
BF973	1T	No	Treatment Plant	-	-	Inactive

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
BF973	1T	Hypochlorination, Pre	Disinfection
BF974	2T	Hypochlorination, Post	Disinfection
TT959	3T	Hypochlorination, Post	Disinfection

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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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