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Public water system record

Rosendale PWS

Serves Rosendale, Andrew County, MO · 142 people served

Federal records show 3 health-based violations and 8 monitoring/reporting issues for Rosendale PWS in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • MO1010757
  • ROSENDALE
  • MO
  • 142 served

System profile

Source water Purchased groundwater
ZIP 64483
EPA system ID MO1010757

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
8

Key facts

  • Rosendale PWS buys its water from Andrew County PWSD 4.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 81.4 µg/L, federal limit 80 µg/L (at or just above the limit), 2024.
  • Most recent formal enforcement: signed compliance agreement by Missouri, June 1998.
  • Record on file since 1991, with 11 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 45 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 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Jan 1, 2025 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81.4 µg/L, federal limit 80 µg/L (at or just above the limit)
 220 Oct 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above 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
Public Notice
OTHER
 Jul 3, 2025 Resolved
Public Notice
OTHER
 May 12, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2023 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2023 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2023 Resolved
Public Notice
OTHER
 Jun 7, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
 Apr 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2016 Resolved

Full record since 1991

EPA's records for Rosendale PWS go back to 1991. Before October 19, 2016 they list 11 health-based violations (8 resolved, 3 archived by EPA without a recorded fix) and 17 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 2 6
2000s 3 2
2010 to October 18, 2016 6 9
October 19, 2016 to 2019 0 3
2020s 2 5

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

Show all 11 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 81 µg/L, federal limit 80 µg/L (at or just above the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 84 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 97 µg/L, federal limit 80 µg/L (1.2 times the limit)
 Jan 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 91 µg/L, federal limit 80 µg/L (1.1 times the limit)
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 83 µg/L, federal limit 80 µg/L (at or just above the limit)
 Jul 1, 2015 Resolved
Total Coliform
Contaminant limit exceeded
 Nov 1, 2011 Archived
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 64.98 µg/L, federal limit 60 µg/L (1.1 times the limit)
 Oct 1, 2006 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 64.9 µg/L, federal limit 60 µg/L (1.1 times the limit)
 Jul 1, 2006 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 66.73 µg/L, federal limit 60 µg/L (1.1 times the limit)
 Apr 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
 May 1, 1998 Archived
Total Coliform
Contaminant limit exceeded
 Jul 1, 1995 Archived

Enforcement actions

Missouri regulators took 1 formal enforcement action against Rosendale PWS in 1998. The most recent was a signed compliance agreement in June 1998.

Date By Action Violations covered
Jun 1, 1998 Missouri Signed compliance agreement 2 violations (1 health-based): Total Coliform

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

Rosendale PWS buys its water from Andrew County PWSD 4. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Rosendale 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 Rosendale 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