EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records
PUBLIC WATER SYSTEM RECORDPWSID IL1450100

Illinois · Surface water purchased

Duquoin

EPA’s September 2026 export lists Duquoin (PWSID IL1450100) as Current health-based flag, serving a reported 7,169 people from a surface water purchased source, with 2 rules in current violation.

Source: EPA SDWIS system-search export · Snapshot 13 Sep 2026 · Federal compliance fields

CURRENT EXPORTCurrent health-based flagEPA's export includes a current health-based violation flag.
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01 / CURRENT FLAGS

EPA compliance flags for Duquoin

Duquoin is listed as current health-based flag in the current export; the five federal flag categories remain separate below.

  • FLAGGED
    Health-based violationCurrent HEALTH_FLAG in the EPA export.
  • FLAGGED
    Monitoring and reportingCurrent MR_FLAG in the EPA export.
  • NOT FLAGGED
    Public notificationCurrent PN_FLAG in the EPA export.
  • NOT FLAGGED
    Other violationCurrent OTHER_FLAG in the EPA export.
  • NOT FLAGGED
    Serious violatorCurrent serious-violator status in the EPA export.
Important limit

This page is not a household water test. A clear federal flag does not prove every home has safe water, and a flag is not a measurement at your faucet. Plumbing, service lines, local sampling, private wells, and newer events may not be reflected here.

02 / VIOLATION RECORD

Quarters with violations7rolling history field
Quarters with SNC0significant noncompliance
Rules in current violation2EPA export count
Rules in 3-year window6EPA export count

Current rule entries for Duquoin

EPA supplied 2 current contaminant, rule, or violation-category entries for Duquoin in the exported fields used here.

  • 5000=Lead and Copper Rule
  • 5200=LEAD AND COPPER RULE REVISIONS

Three-year entries for Duquoin

EPA supplied 6 contaminant or rule entries for Duquoin in the three-year history field.

  • 1006=Chloramine
  • 2456=Total Haloacetic Acids (HAA5)
  • 2950=TTHM
  • 5000=Lead and Copper Rule
  • 5200=LEAD AND COPPER RULE REVISIONS
  • 8000=Revised Total Coliform Rule

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Duquoin

The export lists 2 site visits in five years and 4 significant deficiencies for Duquoin.

Site visits, past 5 years
2
Inspection visits
1
Other visits
1
Last sanitary survey
01/30/2024
Last recorded visit
09/26/2025
Significant deficiencies
4

Places served by Duquoin

EPA associates Duquoin with the listed cities, counties, ZIP codes, and Illinois service area identifiers.

State / territory
Illinois
Cities
DU QUOIN
Counties
Perry
ZIP codes
Not supplied
Federal PWSID
IL1450100
Registry ID
110013009350

04 / HOW TO USE THIS RECORD

Current public records for Duquoin

EPA’s facility report, the Illinois drinking-water program, and Duquoin’s Consumer Confidence Report are the current public records beyond this September 2026 snapshot.

Confirm current conditions with the utility's latest Consumer Confidence Report, your state drinking-water program, and the EPA facility report. For household concerns, ask a qualified local laboratory about tap testing.

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