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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDWI1130221
PWS NameDEFOREST WATERWORKS
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served10500
County ServedDane

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
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice2500017Open17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS2500016Returned to Compliance17-OCT-2024 - Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)0300001Returned to Compliance01-SEP-200230-SEP-2002No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9303594Returned to Compliance01-JUN-199330-JUN-1993Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9303488Returned to Compliance01-APR-199330-APR-1993Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9303436Returned to Compliance01-MAR-199331-MAR-1993Yes
  • 1 - 6 of 6

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
99999000000000000012500016EIAFederal Violation/Reminder Notice18-JUN-2025ODSWeb -
03000040300001SIFState Public Notification received05-NOV-2002State -
93052409303594SIFState Public Notification received13-JUL-1993State -
93047829303488SIFState Public Notification received25-MAY-1993State -
93046479303436SIFState Public Notification received26-MAR-1993State -
  • 1 - 5 of 5

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BF4962YesWell Ground waterPermanentActive
BF49799YesWell Ground waterPermanentInactive
TQ32698YesWell Ground waterPermanentInactive
YG6065YesWell Ground waterPermanentInactive
BF4951YesWell Ground waterPermanentInactive
HO6886YesWell Ground waterPermanentActive
DR4244YesWell Ground waterPermanentActive
KY5713YesWell Ground waterPermanentActive
1130221411302214NoDistribution System/Zone - - Active
BF4962TNoTreatment Plant - - Active
KY5713TNoTreatment Plant - - Active
DR4244TNoTreatment Plant - - Active
HO6886TNoTreatment Plant - - Active
YG6065TNoTreatment Plant - - Inactive
  • 1 - 14 of 14

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
BF4962TFluoridationOther
BF4962THypochlorination, PostDisinfection
KY5713TFluoridationOther
KY5713THypochlorination, PostDisinfection
DR4244TFluoridationOther
DR4244THypochlorination, PostDisinfection
HO6886THypochlorination, PostDisinfection
HO6886TSequestrationIron removal
  • 1 - 8 of 8

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.