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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIL1130300
PWS NameCHENOA
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served1785
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
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)7147147Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147146Returned to Compliance01-JUL-202530-SEP-2025No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule7147145Open01-APR-2025 - No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147143Returned to Compliance01-JAN-202531-MAR-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)7147144Returned to Compliance01-JAN-202531-MAR-2025No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule7147142Returned to Compliance01-JAN-2024 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147141Returned to Compliance01-OCT-202331-DEC-2023Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147140Returned to Compliance01-JUL-202330-SEP-2023Yes
TTOCCT/SOWT Study/RecommendationLead and Copper RuleLead and Copper Rule7147137Returned to Compliance02-APR-2023 - Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147139Returned to Compliance01-APR-202330-JUN-2023Yes
TTPublic EducationLead and Copper RuleLead and Copper Rule7147136Returned to Compliance01-MAR-2023 - Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147135Returned to Compliance01-JAN-202331-MAR-2023Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7147119Returned to Compliance01-OCT-202231-DEC-2022Yes
MRMonitoring, RegularRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)7147116Returned to Compliance01-JUL-202030-SEP-2020No
TTLead Service Line Replacement (LSLR)Lead and Copper RuleLead and Copper Rule7147114Returned to Compliance01-OCT-2019 - Yes
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule7147113Returned to Compliance01-JAN-2016 - No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine7147110Returned to Compliance01-JUL-201330-SEP-2013No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice7147109Returned to Compliance18-JUL-2009 - No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine7147108Returned to Compliance01-APR-200830-JUN-2008No
MRWater Quality Parameter M/RLead and Copper RuleLead and Copper Rule7147107Returned to Compliance01-JAN-200830-JUN-2008No
MRWater Quality Parameter M/RLead and Copper RuleLead and Copper Rule7147106Returned to Compliance01-JAN-200630-JUN-2006No
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)1328191Returned to Compliance01-MAY-199130-APR-1995Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)1034187Returned to Compliance01-MAY-198730-APR-1991Yes
MCLMaximum Contaminant Level Violation, AverageInorganic ChemicalsFluoride264585Returned to Compliance01-MAY-198530-APR-1988Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)1034083Returned to Compliance01-MAY-198330-APR-1987Yes
MCLMaximum Contaminant Level Violation, AverageInorganic ChemicalsFluoride264482Known01-MAY-198230-APR-1985Yes
MCLMaximum Contaminant Level Violation, AverageRadionuclides and Revised Rad RuleCombined Radium (-226 and -228)1033979Returned to Compliance22-MAY-197921-MAY-1983Yes
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U7145780Known30-JUN-197729-JUN-1981No
  • 1 - 28 of 28

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
19694817147146SOXState Compliance achieved26-DEC-2025State -
19694817147147SOXState Compliance achieved26-DEC-2025State -
19694787147144SIFState Public Notification received28-JUL-2025State -
19694787147143SIFState Public Notification received28-JUL-2025State -
19694757147145SIAState Violation/Reminder Notice16-JUL-2025State -
19694727147136SOXState Compliance achieved20-DEC-2024State -
19694707147142SOXState Compliance achieved26-JUN-2024State -
19694697147139SOXState Compliance achieved26-MAR-2024State -
19694697147140SOXState Compliance achieved26-MAR-2024State -
19694697147141SOXState Compliance achieved26-MAR-2024State -
19694697147135SOXState Compliance achieved26-MAR-2024State -
19694697147119SOXState Compliance achieved26-MAR-2024State -
19694717147137SOXState Compliance achieved14-FEB-2024State -
19694317147116SOXState Compliance achieved26-OCT-2020StateSample results received 10/26/20. No PN required letter sent 10/29/20 pc
19694267147114SOXState Compliance achieved31-OCT-2019State -
19694207147113SOXState Compliance achieved15-JAN-2016State -
19694187147110SOXState Compliance achieved01-NOV-2013Stateresidual left off of original report - revised report with residual sent on 11/01/2013
19694157147109SIAState Violation/Reminder Notice12-AUG-2009State -
19694137147108SIFState Public Notification received05-AUG-2009State -
19694117147107SOXState Compliance achieved17-JUL-2008StateReceived form
19694067147106SOXState Compliance achieved12-JUL-2006State -
19672931034083SOXState Compliance achieved22-APR-1993State -
19672931034187SOXState Compliance achieved22-APR-1993State -
19672931328191SOXState Compliance achieved22-APR-1993State -
19672931033979SOXState Compliance achieved22-APR-1993State -
1008585264585SOXState Compliance achieved14-NOV-1985State -
382264482SIFState Public Notification received30-SEP-1982State -
  • 1 - 27 of 27

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 4 (47603) EMERGENCY21468YesWell Ground waterEmergencyActive
WELL 6 (01787)34911YesWell Ground waterPermanentActive
WELL 5 (00574)18385YesWell Ground waterPermanentActive
WELL 3 (47602) ABANDONED21467YesWell Ground waterOtherInactive
WELL 2 (47601) ABANDONED21466YesWell Ground waterOtherInactive
WELL 1 (47600) ABANDONED21465YesWell Ground waterOtherInactive
CHENOA24444NoDistribution System/Zone - - Active
SCHOOL LEAD SAMPLING46056NoDistribution System/Zone - - Active
CHILDCARE FACILITY LEAD SAMPLING46057NoDistribution System/Zone - - Active
GENERIC FINISHED SAMPLING STATION28103NoSampling Station - - Active
GENERIC RAW SAMPLING STATION30525NoSampling Station - - Active
WATER QUALITY SAMPLING43927NoSampling Station - - Active
ELEV1 - 0.2 MG ELEVATED TANK11477NoStorage - - Active
DISTRIBUTION GROUND STORAGE12317NoStorage - - Inactive
PLANT AT SCOTT AND LETCHER, WEST OF RR16563NoTreatment Plant - - Active
  • 1 - 15 of 15

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
PLANT AT SCOTT AND LETCHER, WEST OF RR16563InnovativeCorrosion control
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Hypochlorination, PreDisinfection
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Hypochlorination, PostDisinfection
PLANT AT SCOTT AND LETCHER, WEST OF RR16563InnovativeRadionuclides removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563InnovativeOther
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Inhibitor, OrthophosphateCorrosion control
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Filtration, Pressure SandIron removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Reverse OsmosisIron removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Aeration, Slat TrayIron removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Gaseous Chlorination, PreIron removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563pH Adjustment, PostCorrosion control
PLANT AT SCOTT AND LETCHER, WEST OF RR16563pH Adjustment, PostCorrosion control
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Filtration, Pressure SandRadionuclides removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Reverse OsmosisRadionuclides removal
PLANT AT SCOTT AND LETCHER, WEST OF RR16563Aeration, Slat TrayRadionuclides removal
  • 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.