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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIL1130850
PWS NameMC LEAN
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served791
County ServedMcLean

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
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule5371913Returned to Compliance01-JUL-2023 - No
MRMonitoring, RegularRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)5371911Returned to Compliance01-JAN-201731-DEC-2022No
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic5371907Returned to Compliance01-JUL-200630-SEP-2006Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic5371806Returned to Compliance01-APR-200630-JUN-2006Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic5371706Returned to Compliance23-JAN-200631-MAR-2006Yes
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)5218200Known01-SEP-200030-SEP-2000No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule5371294Returned to Compliance01-OCT-1994 - No
  • 1 - 7 of 7

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
50234225371911SIFState Public Notification received05-FEB-2024State -
50234215371913SOXState Compliance achieved03-JAN-2024State -
50234075371706SOXState Compliance achieved27-DEC-2006State2006Q4 sample result calc RAA at 9
50234075371907SOXState Compliance achieved27-DEC-2006State2006Q4 sample result calc RAA at 9
50234075371806SOXState Compliance achieved27-DEC-2006State2006Q4 sample result calc RAA at 9
3926015218200SIEState Public Notification requested15-NOV-2000State -
50215965371294SOXState Compliance achieved31-DEC-1995State -
  • 1 - 7 of 7

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 3 (47625)21488YesWell Ground waterPermanentActive
WELL 4 (47628)21491YesWell Ground waterPermanentActive
MC LEAN24455NoDistribution System/Zone - - Active
CHILDCARE FACILITY LEAD SAMPLING46878NoDistribution System/Zone - - Active
GENERIC FINISHED SAMPLING STATION28114NoSampling Station - - Active
GENERIC RAW SAMPLING STATION30536NoSampling Station - - Active
ELEVATED TANK 200,000-GALLONS44266NoStorage - - Active
ELEVATED STORAGE 60,000-GALLON11486NoStorage - - Inactive
TP 03-TREATMENT PLANT16581NoTreatment Plant - - Active
TP 01 (EMERGENCY)16579NoTreatment Plant - - Inactive
TP 0216580NoTreatment Plant - - Inactive
  • 1 - 11 of 11

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TP 03-TREATMENT PLANT16581FluoridationOther
TP 03-TREATMENT PLANT16581Gaseous Chlorination, PostDisinfection
TP 03-TREATMENT PLANT16581CoagulationInorganics removal
TP 03-TREATMENT PLANT16581PermanganateIron removal
TP 03-TREATMENT PLANT16581Gaseous Chlorination, PreDisinfection
TP 03-TREATMENT PLANT16581Filtration, Pressure SandIron removal
TP 03-TREATMENT PLANT16581Aeration, Slat TrayIron removal
TP 03-TREATMENT PLANT16581Gaseous Chlorination, PreIron 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.