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Public water system record

Waverly PWS

Serves Waverly, Lafayette County, MO · 800 people served

Federal records show 10 health-based violations and 2 monitoring/reporting issues for Waverly PWS in the last ten years. The most serious issue in this window was a resolved Stage 1 Disinfection Byproducts Rule violation.

  • MO1010839
  • WAVERLY
  • MO
  • 800 served

System profile

Source water Purchased groundwater
ZIP 64096
EPA system ID MO1010839

Verify this system on EPA ECHO →

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

Key facts

  • Waverly PWS buys its water from Marshall PWS.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 113 µg/L, federal limit 80 µg/L (1.4 times the limit), 2018.
  • Most recent formal enforcement: compliance order with a penalty by Missouri, August 2018.
  • Record on file since 1994, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 71 unknown out of 416 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
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
 210 Nov 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Oct 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 113 µg/L, federal limit 80 µg/L (1.4 times the limit)
 220 Jul 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 89.7 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Apr 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 87.73 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jan 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 91 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Oct 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 95 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Jul 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 99 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 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
Revised Total Coliform Rule
Monitoring violation
 Aug 1, 2024 Resolved
Public Notice
OTHER
 Oct 9, 2016 Resolved

Full record since 1994

EPA's records for Waverly PWS go back to 1994. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 9 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 2
2000s 0 4
2010 to October 18, 2016 3 3
October 19, 2016 to 2019 8 0
2020s 1 1

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

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
 Jul 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

Enforcement actions

Missouri regulators took 1 formal enforcement action against Waverly PWS in 2018. The most recent was a compliance order with a penalty in August 2018.

Date By Action Violations covered
Aug 28, 2018 Missouri Compliance order with a penalty 9 violations (9 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

9 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Stage 1 Disinfection Byproducts Rule

1 incident

The system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule

Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk

Where the water comes from

Waverly PWS buys its water from Marshall PWS. It lists no wells or intakes of its own. 1 other community water system buys water from Waverly PWS.

Buys water from

Community systems that buy water from it

Annual water quality report

Waverly 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.

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 Missouri.

Certified drinking water labs by state EPA guidance for private wells