Public water system record

S L M Water Commission

Serves an area of St. Clair County, IL · 385 people served

Federal records show no health-based violations and 2 monitoring/reporting issues for S L M Water Commission in the last ten years.

  • IL1635090
  • MASCOUTAH
  • IL
  • 385 served

System profile

Source water Surface water
ZIP 62258
EPA system ID IL1635090

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • S L M Water Commission draws water from 2 surface water intakes.
  • Record on file since 1977, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 153 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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Atrazine
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Simazine
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.

Full record since 1977

EPA's records for S L M Water Commission go back to 1977. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 3 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 1
1990s 1 0
2000s 0 2
2010 to October 18, 2016 1 0
2020s 0 2

Most recent health-based violation before October 19, 2016: Long Term 2 Enhanced Surface Water Treatment Rule, began June 2014, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
Jun 1, 2014 Resolved
Atrazine
Contaminant limit exceeded
Apr 1, 1995 Resolved

Where the water comes from

S L M Water Commission draws water from 2 surface water intakes. 9 other community water systems and 1 smaller public system such as schools, businesses or campgrounds buy water from S L M Water Commission.

Community systems that buy water from it

Annual water quality report

S L M Water Commission 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.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask S L M Water Commission for a copy.

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.