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Public water system record

Blairstown PWS

Serves Blairstown, Henry County, MO · 123 people served

Federal records show no health-based violations and 7 monitoring/reporting issues for Blairstown PWS in the last ten years. At least one of these issues remains unresolved.

  • MO1010076
  • BLAIRSTOWN
  • MO
  • 123 served

System profile

Source water Purchased surface water
ZIP 64726
EPA system ID MO1010076

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
7

Key facts

  • Blairstown PWS buys its water from Henry County PWSD 4.
  • Most recent formal enforcement: compliance order with a penalty by Missouri, June 2013.
  • Record on file since 1978, with 23 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 69 unknown out of 82 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
Lead and Copper Rule
Monitoring and reporting
 Sep 14, 2025 Active
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2025 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Apr 1, 2024 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Apr 1, 2024 Resolved
Public Notice
OTHER
 Oct 9, 2016 Resolved
Public Notice
OTHER
 Jan 25, 2012 Resolved
Public Notice
OTHER
 Sep 18, 2011 Resolved

Full record since 1978

EPA's records for Blairstown PWS go back to 1978. Before October 19, 2016 they list 23 health-based violations (14 resolved, 9 archived by EPA without a recorded fix) and 10 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 1 0
1980s 8 0
1990s 2 0
2000s 0 2
2010 to October 18, 2016 12 8
2020s 0 4

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

Show all 23 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 87 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 150.73 µg/L, federal limit 80 µg/L (1.9 times the limit)
 Jul 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 160.48 µg/L, federal limit 80 µg/L (2 times the limit)
 Apr 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 163.98 µg/L, federal limit 80 µg/L (2 times the limit)
 Jan 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 162.73 µg/L, federal limit 80 µg/L (2 times the limit)
 Oct 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 156.98 µg/L, federal limit 80 µg/L (2 times the limit)
 Jul 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 139.23 µg/L, federal limit 80 µg/L (1.7 times the limit)
 Apr 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 129.73 µg/L, federal limit 80 µg/L (1.6 times the limit)
 Jan 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 137.43 µg/L, federal limit 80 µg/L (1.7 times the limit)
 Oct 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 108.68 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Jul 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86.13 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Apr 1, 2011 Resolved
Fluoride
Contaminant limit exceeded
 Jan 1, 1997 Resolved
Fluoride
Contaminant limit exceeded
 Jan 1, 1996 Resolved
Fluoride
Contaminant limit exceeded
 Oct 1, 1986 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1986 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1984 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1983 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1982 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1981 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1980 Archived
Fluoride
Contaminant limit exceeded
 Oct 1, 1980 Archived
Fluoride
Contaminant limit exceeded
 Jun 20, 1978 Archived

Enforcement actions

Missouri regulators took 2 formal enforcement actions against Blairstown PWS between 1998 and 2013. The most recent was a compliance order with a penalty in June 2013.

Date By Action Violations covered
Jun 25, 2013 Missouri Compliance order with a penalty 11 violations (9 health-based): Total Trihalomethanes (TTHMs), Public Notice
Aug 25, 1998 Missouri Signed compliance agreement 2 violations (2 health-based): Fluoride

Where the water comes from

Blairstown PWS buys its water from Henry County PWSD 4. EPA also lists 1 well, all for emergency, seasonal or other part-time use.

Buys water from

Annual water quality report

Blairstown PWS 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 Blairstown PWS 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 Missouri.

Certified drinking water labs by state EPA guidance for private wells