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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDMN1340016
PWS NameWillmar
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served21045
County ServedKandiyohi

Note


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.

PWS Violation


Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
MRWater Quality Parameter M/RLead and Copper RuleLead and Copper Rule831504Returned to Compliance01-JAN-202530-JUN-2025No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule59975Returned to Compliance01-OCT-2020 - No
  • 1 - 2 of 2

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
831505SOX831504SOXState Compliance achieved16-DEC-2025State -
735719SOX59975SOXState Compliance achieved11-AUG-2021State -
  • 1 - 2 of 2

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
Well D-21YesWell Ground waterEmergencyInactive
Well W-149YesWell Ground waterPermanentActive
Well W-128YesWell Ground waterPermanentActive
Well E-227YesWell Ground waterPermanentActive
Well E-216YesWell Ground waterPermanentActive
Well E-205YesWell Ground waterPermanentActive
Well E-194YesWell Ground waterPermanentActive
Well W-2431YesWell Ground waterPermanentActive
Well W-2330YesWell Ground waterPermanentActive
Well E-173YesWell Ground waterPermanentActive
Well E-102YesWell Ground waterPermanentActive
Well W-915YesWell Ground waterPermanentActive
Well W-814YesWell Ground waterPermanentActive
Well W-713YesWell Ground waterPermanentActive
Well W-1812YesWell Ground waterPermanentActive
Well W-1611YesWell Ground waterPermanentActive
Well W-1510YesWell Ground waterPermanentActive
Distribution System22NoDistribution System/Zone - - Active
30th Street Booster Station32NoPump Facility - - Active
1st Street Booster Station33NoPump Facility - - Active
TREATMENT PLANT N.E.16NoTreatment Plant - - Active
TREATMENT PLANT S.W.17NoTreatment Plant - - Active
Well D-2 Entry Point18NoTreatment Plant - - Inactive
  • 1 - 23 of 23

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT N.E.16Aeration, Packed TowerIron removal
TREATMENT PLANT N.E.16Inhibitor, PolyphosphateCorrosion control
TREATMENT PLANT N.E.16Gaseous Chlorination, PostDisinfection
TREATMENT PLANT N.E.16FluoridationOther
TREATMENT PLANT N.E.16Filtration, GreensandIron removal
TREATMENT PLANT N.E.16Filtration, GreensandManganese removal
TREATMENT PLANT N.E.16InnovativeOther
TREATMENT PLANT S.W.17Aeration, Packed TowerIron removal
TREATMENT PLANT S.W.17Inhibitor, PolyphosphateCorrosion control
TREATMENT PLANT S.W.17Gaseous Chlorination, PostDisinfection
TREATMENT PLANT S.W.17FluoridationOther
TREATMENT PLANT S.W.17Filtration, GreensandIron removal
TREATMENT PLANT S.W.17Filtration, GreensandManganese removal
TREATMENT PLANT S.W.17InnovativeOther
Well D-2 Entry Point18Gaseous Chlorination, PostDisinfection
  • 1 - 15 of 15

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.