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Public water system record

Okawville

Serves Okawville, Washington County, IL · 1,521 people served

Federal records show 1 health-based violation and no monitoring/reporting issues for Okawville in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.

  • IL1890400
  • OKAWVILLE
  • IL
  • 1,521 served

System profile

Source water Purchased surface water
ZIP 62271
EPA system ID IL1890400

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
0

Key facts

  • Okawville buys its water from Washington County Water Company.
  • Most recent formal enforcement: signed compliance agreement by Illinois, September 2007.
  • Record on file since 1977, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 726 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 Jan 1, 2018 Resolved Yes

Full record since 1977

EPA's records for Okawville go back to 1977. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 3 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 1
1990s 0 2
2000s 3 0
October 19, 2016 to 2019 1 0

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2007, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 Oct 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 92 µg/L, federal limit 80 µg/L (1.2 times the limit)
 Jul 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Apr 1, 2007 Resolved

Enforcement actions

Illinois regulators took 1 formal enforcement action against Okawville in 2007. The most recent was a signed compliance agreement in September 2007.

Date By Action Violations covered
Sep 26, 2007 Illinois Signed compliance agreement 3 violations (3 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Interim Enhanced Surface Water Treatment Rule

1 incident

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

Where the water comes from

Okawville buys its water from Washington County Water Company. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Okawville 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