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Public water system record

Ej Water-MCWC

Serves an area of Montgomery County, IL that includes Hillsboro · 2,075 people served

Federal records show 5 health-based violations and 1 monitoring/reporting issue for Ej Water-MCWC in the last ten years. The most serious issue in this window was a Interim Enhanced Surface Water Treatment Rule violation that EPA lists as archived, not resolved.

  • IL1350020
  • DIETERICH
  • IL
  • 2,075 served

System profile

Source water Purchased surface water
ZIP 62424
EPA system ID IL1350020

Verify this system on EPA ECHO →

Health-based violations, last 10 years
5
Resolved
2
Unresolved
0
Archived by EPA
3
Any acute record
Yes
Monitoring issues, last 10 years
1

Key facts

  • Ej Water-MCWC buys its water from Hillsboro and Litchfield.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit), 2019.
  • Most recent formal enforcement: signed compliance agreement by Illinois, December 2009.
  • Record on file since 1999, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 1,058 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Dec 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 Yes
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Nov 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 Yes
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 Yes
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 220 Oct 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Jul 1, 2019 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Public Notice
OTHER
 Dec 26, 2025 Active

Full record since 1999

EPA's records for Ej Water-MCWC go back to 1999. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 5 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 2
2000s 3 3
October 19, 2016 to 2019 2 0
2020s 3 1

Most recent health-based violation before October 19, 2016: Total Coliform, began September 2009, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Sep 1, 2009 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Sep 1, 2009 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 2005 Resolved

Enforcement actions

Illinois regulators took 1 formal enforcement action against Ej Water-MCWC in 2009. The most recent was a signed compliance agreement in December 2009.

Date By Action Violations covered
Dec 3, 2009 Illinois Signed compliance agreement 2 violations (2 health-based): Total Coliform

What the violations mean

Interim Enhanced Surface Water Treatment Rule

3 incidents

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Haloacetic Acids (HAA5)

2 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Where the water comes from

Ej Water-MCWC buys its water from Hillsboro and Litchfield. It lists no wells or intakes of its own. 2 other community water systems buy water from Ej Water-MCWC. 2 other public water systems have emergency connections to Ej Water-MCWC.

Buys water from

Community systems that buy water from it

Annual water quality report

Ej Water-MCWC must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Illinois.

Certified drinking water labs by state EPA guidance for private wells