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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDMN1570003
PWS NameThief River Falls
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served8701
County ServedPennington

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
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule812562030044Known01-JAN-202531-JAN-2025Yes
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule730406Returned to Compliance01-JAN-2021 - No
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54748Returned to Compliance01-JUL-201831-JUL-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54747Returned to Compliance01-JUN-201830-JUN-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54746Returned to Compliance01-MAY-201831-MAY-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54260Returned to Compliance01-APR-201830-APR-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54259Returned to Compliance01-MAR-201831-MAR-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54258Returned to Compliance01-FEB-201828-FEB-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54257Returned to Compliance01-JAN-201831-JAN-2018Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54256Returned to Compliance01-DEC-201731-DEC-2017Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54255Returned to Compliance01-OCT-201731-OCT-2017Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54254Returned to Compliance01-SEP-201730-SEP-2017Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54253Returned to Compliance01-AUG-201731-AUG-2017Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54252Returned to Compliance01-JUL-201731-JUL-2017Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54251Returned to Compliance01-JUN-201730-JUN-2017Yes
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule53465Returned to Compliance01-JUN-201730-JUN-2017No
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule54745Returned to Compliance01-SEP-201530-SEP-2015Yes
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule49571Returned to Compliance01-SEP-201530-SEP-2015No
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule4029Returned to Compliance01-MAR-200401-APR-2004Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule4028Known01-NOV-200201-DEC-2002Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule4030Returned to Compliance01-OCT-199831-OCT-1998Yes
  • 1 - 21 of 21

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
813211SIF812562030044SIFState Public Notification received12-MAY-2025State -
737792SOX730406SOXState Compliance achieved31-AUG-2021State -
67909454748SOXState Compliance achieved16-APR-2019State -
66949954254SOXState Compliance achieved06-SEP-2018State -
66949954747SOXState Compliance achieved06-SEP-2018State -
66949954746SOXState Compliance achieved06-SEP-2018State -
66949954260SOXState Compliance achieved06-SEP-2018State -
66949954259SOXState Compliance achieved06-SEP-2018State -
66949954258SOXState Compliance achieved06-SEP-2018State -
66949954252SOXState Compliance achieved06-SEP-2018State -
66949954253SOXState Compliance achieved06-SEP-2018State -
66949954255SOXState Compliance achieved06-SEP-2018State -
66949954256SOXState Compliance achieved06-SEP-2018State -
66949954257SOXState Compliance achieved06-SEP-2018State -
65361454251SOXState Compliance achieved01-DEC-2017State -
64508053465SOXState Compliance achieved01-NOV-2017State -
58417749571SIFState Public Notification received10-NOV-2015State -
58417754745SIFState Public Notification received10-NOV-2015State -
844274029SOXState Compliance achieved12-MAY-2004State -
844304030SOXState Compliance achieved06-OCT-1998State -
  • 1 - 20 of 20

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
Red Lake River1YesIntakeSurface waterPermanentActive
Distribution System4NoDistribution System/Zone - - Active
TREATMENT PLANT2NoTreatment Plant - - Active
  • 1 - 3 of 3

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT2CoagulationParticulate removal
TREATMENT PLANT2CoagulationSoftening (hardness removal)
TREATMENT PLANT2CoagulationParticulate removal
TREATMENT PLANT2InnovativeOther
TREATMENT PLANT2ChloraminesDisinfection
TREATMENT PLANT2Gaseous Chlorination, PostDisinfection
TREATMENT PLANT2FluoridationOther
TREATMENT PLANT2FilteredParticulate removal
TREATMENT PLANT2SedimentationParticulate removal
TREATMENT PLANT2SedimentationSoftening (hardness removal)
TREATMENT PLANT2Activated Carbon, PowderedTaste / odor control
TREATMENT PLANT2Inhibitor, PolyphosphateOther
TREATMENT PLANT2CoagulationParticulate removal
TREATMENT PLANT2Lime - Soda Ash AdditionParticulate removal
TREATMENT PLANT2Lime - Soda Ash AdditionSoftening (hardness removal)
TREATMENT PLANT2pH AdjustmentCorrosion control
  • 1 - 16 of 16
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.