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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDIL1671300
PWS NameWILLIAMSVILLE
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?No
Population Served6198
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)305Returned to Compliance01-JAN-202531-MAR-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM304Returned to Compliance01-JAN-202531-MAR-2025No
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Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
107305SOXState Compliance achieved26-JUN-2025State -
107304SOXState Compliance achieved26-JUN-2025State -
  • 1 - 2 of 2

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CC 02-MASTER METER26599YesConsecutive ConnectionSurface waterPermanentActive
WELL 4 (50012) ABANDONED21716YesWell Ground waterOtherInactive
WELL 3 (50011) ABANDONED21715YesWell Ground waterOtherInactive
WELL 1 (50010) ABANDONED21714YesWell Ground waterOtherInactive
WILLIAMSVILLE25048NoDistribution System/Zone - - Active
IDSE34694NoDistribution System/Zone - - Active
SCHOOL LEAD SAMPLING46739NoDistribution System/Zone - - Active
CHILDCARE FACILITY LEAD SAMPLING46747NoDistribution System/Zone - - Active
BOOSTER PUMP STATION #244459NoPump Facility - - Active
BOOSTER PUMP STATION #144462NoPump Facility - - Active
BOOSTER PUMP STATION #344463NoPump Facility - - Active
GENERIC FINISHED SAMPLING STATION28707NoSampling Station - - Active
GENERIC RAW SAMPLING STATION31129NoSampling Station - - Active
GRD1 - 0.1 MG GST12438NoStorage - - Active
STANDPIPE1 - 0.75 MG STANDPIPE STORAGE14440NoStorage - - Active
ELEV1 - 0.75 MG EST33273NoStorage - - Active
TP 01-TREATMENT PLANT (ABANDONED)17206NoTreatment Plant - - Inactive
  • 1 - 17 of 17

PWS Treatment Processes

Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.
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.