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Public water system record

Madison

Serves Madison, Lake County, SD · 6,191 people served

Federal records show no health-based violations and no monitoring or reporting issues for Madison in the last ten years.

  • SD4600199
  • MADISON
  • SD
  • 6,191 served

System profile

Source water Groundwater
ZIP 57042
EPA system ID SD4600199

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
0

Key facts

  • Madison draws water from 11 wells.
  • Most recent formal enforcement: compliance order (no penalty) by South Dakota, May 2012.
  • Record on file since 1976, with 9 health-based violations before October 19, 2016.
  • Lead pipe inventory: 2 lead and 71 unknown out of 2,774 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, and no monitoring or reporting violations either.

Full record since 1976

EPA's records for Madison go back to 1976. Before October 19, 2016 they list 9 health-based violations (9 resolved) and 26 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 2
1980s 0 2
1990s 0 21
2010 to October 18, 2016 9 1

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began January 2013, Resolved.

Show all 9 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Oct 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Apr 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jan 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2011 Resolved

Enforcement actions

South Dakota regulators took 1 formal enforcement action against Madison in 2012, filed as 9 records in EPA's data. The most recent was a compliance order (no penalty) in May 2012.

Date By Action Violations covered
May 31, 2012 South Dakota Compliance order (no penalty) 9 violations (9 health-based): Total Trihalomethanes (TTHMs)

Where the water comes from

Madison draws water from 11 wells. It also buys water from Lewis and Clark Regional Water Syste.

Buys water from

Annual water quality report

Madison 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 South Dakota.

Certified drinking water labs by state EPA guidance for private wells