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Public water system record

Sheridan PWS

Serves Sheridan, Worth County, MO · 235 people served

Federal records show 3 health-based violations and 2 monitoring/reporting issues for Sheridan PWS in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • MO1010739
  • SHERIDAN
  • MO
  • 235 served

System profile

Source water Purchased surface water
ZIP 64486
EPA system ID MO1010739

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • Sheridan PWS buys its water from Nodaway County PWSD 1.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 126 µg/L, federal limit 80 µg/L (1.6 times the limit), 2016.
  • Most recent formal enforcement: compliance order with a penalty by Missouri, June 2016.
  • Record on file since 1993, with 18 health-based violations before October 19, 2016.

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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 85 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 101 µg/L, federal limit 80 µg/L (1.3 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 126 µg/L, federal limit 80 µg/L (1.6 times the limit)
 220 Oct 1, 2016 Resolved No

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
 Dec 30, 2025 Active
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active

Full record since 1993

EPA's records for Sheridan PWS go back to 1993. Before October 19, 2016 they list 18 health-based violations (18 resolved) and 15 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 4
2000s 5 7
2010 to October 18, 2016 12 4
October 19, 2016 to 2019 2 0
2020s 0 2

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

Show all 18 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 126 µg/L, federal limit 80 µg/L (1.6 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 127 µg/L, federal limit 80 µg/L (1.6 times the limit)
 Jul 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 125 µg/L, federal limit 80 µg/L (1.6 times the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 91 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Jan 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 77.85 µg/L, federal limit 60 µg/L (1.3 times the limit)
 Jul 1, 2014 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 77.85 µg/L, federal limit 60 µg/L (1.3 times the limit)
 Apr 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 87.1 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Jul 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83.15 µg/L, federal limit 80 µg/L (at or just above the limit)
 Apr 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83.55 µg/L, federal limit 80 µg/L (at or just above the limit)
 Oct 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 84.68 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Jul 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 91.89 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Apr 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99.76 µg/L, federal limit 80 µg/L (1.2 times the limit)
 Jan 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 2009 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Jun 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
 Jun 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 1995 Resolved

Enforcement actions

Missouri regulators took 1 formal enforcement action against Sheridan PWS in 2016. The most recent was a compliance order with a penalty in June 2016.

Date By Action Violations covered
Jun 1, 2016 Missouri Compliance order with a penalty 17 violations (14 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Public Notice

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

Where the water comes from

Sheridan PWS buys its water from Nodaway County PWSD 1. EPA also lists 2 wells, all for emergency, seasonal or other part-time use.

Buys water from

Annual water quality report

Sheridan 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 Sheridan 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