Public Water Partners

DORCHESTER, IL · Macoupin County

DORCHESTER Water System

Consumer Confidence Report status

DORCHESTER must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for DORCHESTER.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID)
IL1170250
System type
Community Water System
Population served
540
Service connections
219
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

DORCHESTER is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 540 people from surface water.

As of August 1, 2026, its federal record holds 17 entries between 1992 and 2026, all of which EPA lists as closed.

Of the 17, 10 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, synthetic organic chemicals, and the Lead and Copper Rule.

Violation history

  • Treatment Technique (SWTR and GWR)

    Health-based

    Long Term 2 Enhanced Surface Water Treatment Rule

    January 1, 2026 – January 31, 2026

    Archived

  • Monitoring and Reporting (DBP)

    —

    TTHM

    April 1, 2025 – June 30, 2025

    Resolved

  • Lead Consumer Notice

    —

    Lead and Copper Rule

    January 2, 2011 – January 20, 2011

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2010 – June 30, 2011

    Resolved

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    October 1, 2005 – October 30, 2007

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2004 – December 16, 2004

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    July 1, 1997 – July 31, 1997

    Archived

  • Maximum Contaminant Level Violation, Average

    Health-based

    Atrazine

    April 1, 1997 – June 30, 1997

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    November 1, 1996 – November 30, 1996

    Archived

  • Maximum Contaminant Level Violation, Average

    Health-based

    Atrazine

    October 1, 1996 – December 31, 1996

    Resolved

  • Maximum Contaminant Level Violation, Average

    Health-based

    Atrazine

    July 1, 1996 – September 30, 1996

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    April 1, 1996 – April 30, 1996

    Archived

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    March 1, 1996 – March 31, 1996

    Archived

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    March 1, 1996 – March 31, 1996

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    August 1, 1995 – August 31, 1995

    Archived

  • Monitoring, Repeat Major (TCR)

    —

    Coliform (TCR)

    July 1, 1995 – July 31, 1995

    Archived

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    December 1, 1992 – December 31, 1992

    Archived

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is DORCHESTER required to publish a Consumer Confidence Report?

Yes. DORCHESTER is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is DORCHESTER’s next Consumer Confidence Report due?

DORCHESTER’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does DORCHESTER have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for DORCHESTER.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

PRIEJ, ROGER

314-568-2313

DORCHESTER, IL 62033