U.S. flag

An official website of the United States government

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDMN1270021
PWS NameMaple Plain
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served2174
County ServedHennepin

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
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)44781Returned to Compliance12-FEB-201330-SEP-2014Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)2161Known01-NOV-199130-NOV-1991No
  • 1 - 2 of 2

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
57626044781SOXState Compliance achieved10-JUN-2015State -
812502161SFJState Formal Notice of Violation issued15-DEC-1991State -
  • 1 - 2 of 2

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
Well #11YesWell Ground waterEmergencyActive
Well #33YesWell Ground waterPermanentActive
Well #413YesWell Ground waterPermanentActive
Well #22YesWell Ground waterEmergencyActive
Distribution System9NoDistribution System/Zone - - Active
WELL #1 ENTRY POINT5NoSampling Station - - Inactive
TREATMENT PLANT #211NoTreatment Plant - - Active
TREATMENT PLANT #14NoTreatment Plant - - Inactive
Well #3 Entry Point6NoTreatment Plant - - Inactive
  • 1 - 9 of 9

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT #211Gaseous Chlorination, PostDisinfection
TREATMENT PLANT #211FluoridationOther
TREATMENT PLANT #211PermanganateRadionuclides removal
TREATMENT PLANT #211Inhibitor, OrthophosphateCorrosion control
TREATMENT PLANT #211Aeration, DiffusedInorganics removal
TREATMENT PLANT #211Filtration, GreensandInorganics removal
TREATMENT PLANT #211InnovativeRadionuclides removal
TREATMENT PLANT #211Gaseous Chlorination, PreIron removal
TREATMENT PLANT #211InnovativeOther
TREATMENT PLANT #14Gaseous Chlorination, PostDisinfection
TREATMENT PLANT #14FluoridationOther
TREATMENT PLANT #14Aeration, SprayIron removal
TREATMENT PLANT #14Filtration, Rapid SandIron removal
TREATMENT PLANT #14Inhibitor, PolyphosphateCorrosion control
Well #3 Entry Point6Gaseous Chlorination, PostDisinfection
Well #3 Entry Point6FluoridationOther
  • 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.