Is M C L W SYSTEM, INC. required to publish a Consumer Confidence Report?

Yes. M C L W SYSTEM, INC. 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 M C L W SYSTEM, INC.’s next Consumer Confidence Report due?

M C L W SYSTEM, INC.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

MILAN, IL · Mercer County

M C L W SYSTEM, INC. Water System

Consumer Confidence Report status

M C L W SYSTEM, INC. 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 M C L W SYSTEM, INC..

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): IL1315150
System type: Community Water System
Population served: 98
Service connections: 32
Ownership: privately owned
Water source: groundwater (wells)

M C L W SYSTEM, INC. is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, serving 98 people from groundwater.

As of August 1, 2026, its federal record holds 14 entries between 1977 and 2015, all of which EPA lists as closed. Nothing has been added since 2015.

All 14 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, inorganic chemicals, and the Lead and Copper Rule.

Violation history

Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
May 1, 2015 – May 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2015 – June 26, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2004 – June 30, 2004
Archived
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Chromium
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2001 – May 31, 2001
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1995 – March 31, 1995
Archived
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1995 – June 30, 1995
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1994 – December 31, 1994
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 1994 – December 31, 1995
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
May 1, 2015 – May 31, 2015	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2015 – June 26, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2004 – June 30, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Barium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Chromium	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Nickel	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Resolved
May 1, 2001 – May 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1995 – March 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1995 – June 30, 1995	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
December 1, 1994 – December 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1994 – December 31, 1995	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

June 27, 2016State Public Notification received1 linked violation
June 27, 2016State Public Notification received1 linked violation
June 26, 2015State Compliance achieved2 linked violations
June 11, 2015State Violation/Reminder Notice1 linked violation
June 11, 2015State Public Notification requested1 linked violation
June 11, 2015State Violation/Reminder Notice1 linked violation
June 11, 2015State Public Notification requested1 linked violation
July 13, 2005State Public Notification received1 linked violation
July 13, 2005State Public Notification received1 linked violation
July 13, 2005State Public Notification received12 linked violations
May 24, 2005State Compliance achieved13 linked violations
February 15, 2005State Public Notification requested12 linked violations
February 15, 2005State Violation/Reminder Notice12 linked violations
August 24, 2004State Public Notification requested1 linked violation
August 24, 2004State Violation/Reminder Notice1 linked violation
August 18, 2004State Public Notification requested1 linked violation
October 10, 1997State Compliance achieved2 linked violations
December 31, 1995State Compliance achieved1 linked violation
June 10, 1995State Violation/Reminder Notice1 linked violation
June 10, 1995State Public Notification requested1 linked violation
March 12, 1995State Violation/Reminder Notice1 linked violation
March 12, 1995State Public Notification requested1 linked violation

Common questions

Is M C L W SYSTEM, INC. required to publish a Consumer Confidence Report?: Yes. M C L W SYSTEM, INC. 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 M C L W SYSTEM, INC.’s next Consumer Confidence Report due?: M C L W SYSTEM, INC.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does M C L W SYSTEM, INC. have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for M C L W SYSTEM, INC..
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

DUCEY, DIANNE

309-314-3514

MILAN, IL 61264