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Public water system record

Golconda

Serves Golconda, Pope County, IL · 630 people served

Federal records show 4 health-based violations and no monitoring/reporting issues for Golconda in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • IL1510100
  • GOLCONDA
  • IL
  • 630 served

System profile

Source water Purchased groundwater
ZIP 62938
EPA system ID IL1510100

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
1
Unresolved
0
Archived by EPA
3
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Golconda buys its water from Millstone PWD.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2025.
  • Record on file since 1977, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 291 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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Apr 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Arsenic
Contaminant limit exceeded
Measured 11 µg/L, federal limit 10 µg/L (1.1 times the limit)
 330 Jan 1, 2023 Resolved No

Full record since 1977

EPA's records for Golconda go back to 1977. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 54 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 1
1990s 0 49
2000s 0 1
2010 to October 18, 2016 2 3
2020s 4 0

Most recent health-based violation before October 19, 2016: Total Coliform, began October 2015, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Oct 1, 2015 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2015 Resolved

What the violations mean

Total Trihalomethanes (TTHMs)

3 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Arsenic

1 incident

Arsenic exceeded the federal limit

Long-term arsenic exposure is linked to cancer and cardiovascular effects

Where the water comes from

Golconda buys its water from Millstone PWD. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Golconda 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