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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIL1670550
PWS NameILLIOPOLIS
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water purchased
Primacy TypeState
Is Wholesaler?No
Population Served1037
County ServedSangamon

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)7073427Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073426Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073425Returned to Compliance01-JUL-202430-SEP-2024No
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule7073423Returned to Compliance01-OCT-2023 - No
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule7073424Returned to Compliance01-JUL-2023 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073421Returned to Compliance01-APR-202230-JUN-2022Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073420Returned to Compliance01-JAN-202231-MAR-2022Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073419Returned to Compliance01-OCT-202131-DEC-2021Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM7073418Returned to Compliance01-JUL-202130-SEP-2021Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine7073416Returned to Compliance01-JAN-202031-MAR-2020No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule7073413Returned to Compliance01-JAN-2017 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice7073407Returned to Compliance14-OCT-2006 - No
MCLMaximum Contaminant Level Violation, AverageStage 1 Disinfectants and Disinfection Byproducts RuleTTHM7073306Returned to Compliance01-JUL-200630-SEP-2006Yes
OtherConsumer Confidence Report Inadequate ReportingConsumer Confidence RuleConsumer Confidence Rule7073104Returned to Compliance20-SEP-2004 - No
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U7072980Known30-JUN-197729-JUN-1981No
  • 1 - 15 of 15

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
14577073427SOXState Compliance achieved21-AUG-2025State -
14577073426SOXState Compliance achieved21-AUG-2025State -
14547073425SIFState Public Notification received19-MAY-2025State -
14507073423SIFState Public Notification received10-APR-2024State -
14497073424SOXState Compliance achieved10-APR-2024State -
14367073418SOXState Compliance achieved14-SEP-2022State -
14367073420SOXState Compliance achieved14-SEP-2022State -
14367073419SOXState Compliance achieved14-SEP-2022State -
14367073421SOXState Compliance achieved14-SEP-2022State -
14167073416SOXState Compliance achieved10-MAR-2020State -
14137073413SOXState Compliance achieved12-JAN-2017State -
13077073306SFKState Bilateral Compliance Agreement signed16-NOV-2006State -
12077073407SIAState Violation/Reminder Notice14-NOV-2006State -
5057073104SOXState Compliance achieved14-OCT-2004State -
  • 1 - 14 of 14

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CC 01-IN WTP 132195YesConsecutive ConnectionGround waterOtherInactive
WELL 9 (50112)34206YesWell Ground waterPermanentInactive
WELL 19 (01121) TRANSFERRED TO IL167026034205YesWell Ground waterOtherInactive
WELL 18 (00883) TRANSFERRED TO IL167026034204YesWell Ground waterOtherInactive
WELL 17 (00749) TRANSFERRED TO IL167026034203YesWell Ground waterOtherInactive
WELL 16 (00398) TRANSFERRED TO IL167026034202YesWell Ground waterOtherInactive
WELL 1 (50299) ABANDONED21983YesWell Ground waterOtherInactive
CC02 - POINT OF CONNECTION TO URWC43887YesConsecutive ConnectionGround waterPermanentActive
GR01A - 0.125 MG CLEARWELL39726NoClear Well - - Inactive
GR01B - 0.125 MG CLEARWELL39727NoClear Well - - Inactive
ILLIOPOLIS25038NoDistribution System/Zone - - Active
IDSE35558NoDistribution System/Zone - - Active
SCHOOL LEAD SAMPLING46183NoDistribution System/Zone - - Active
GENERIC FINISHED SAMPLING STATION28697NoSampling Station - - Inactive
GENERIC RAW SAMPLING STATION31119NoSampling Station - - Inactive
ELEV1 - 0.2 MG ELEVATED STORAGE11752NoStorage - - Active
TP 01 - FILTRATION PLANT17199NoTreatment Plant - - Inactive
TP 02 - SOFTENING PLANT26591NoTreatment Plant - - Inactive
  • 1 - 18 of 18

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TP 01 - FILTRATION PLANT17199Filtration, Rapid SandParticulate removal
TP 01 - FILTRATION PLANT17199Gaseous Chlorination, PostDisinfection
TP 02 - SOFTENING PLANT26591Ion ExchangeSoftening (hardness removal)
TP 02 - SOFTENING PLANT26591FluoridationOther
  • 1 - 4 of 4
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.