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Public water system record

Dayton Water Dept

Serves an area of Rhea County and Bledsoe County, TN that includes Dayton · 25,054 people served

Federal records show 1 health-based violation and 8 monitoring/reporting issues for Dayton Water Dept in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.

  • TN0000174
  • DAYTON
  • TN
  • 25,054 served

System profile

Source water Surface water
ZIP 37321
EPA system ID TN0000174

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
8

Key facts

  • Dayton Water Dept draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.0604 mg/L, federal limit 0.06 mg/L (at or just above the limit), 2024.
  • Most recent formal enforcement: compliance order with a penalty by Tennessee, August 2024.
  • Record on file since 1993, with 9 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 29 unknown out of 12,014 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
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0604 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 220 Jan 1, 2024 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
 Jan 1, 2021 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 1, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 1, 2020 Resolved
Consumer Confidence Rule
OTHER
 Oct 1, 2020 Resolved
Public Notice
OTHER
 Aug 13, 2017 Active
2,4-D
Monitoring and reporting
 Jan 1, 2014 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Atrazine
Monitoring and reporting
 Jan 1, 2014 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Picloram
Monitoring and reporting
 Jan 1, 2014 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.

Full record since 1993

EPA's records for Dayton Water Dept go back to 1993. Before October 19, 2016 they list 9 health-based violations (8 resolved, 1 archived by EPA without a recorded fix) and 34 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 4
2000s 2 15
2010 to October 18, 2016 7 15
October 19, 2016 to 2019 0 1
2020s 1 4

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

Show all 9 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Apr 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Jan 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Jan 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Oct 1, 2015 Resolved
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
 Oct 2, 2010 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Feb 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
 Nov 1, 2000 Archived

Enforcement actions

Tennessee regulators took 2 formal enforcement actions against Dayton Water Dept and issued 1 boil water order between 2003 and 2024. The most recent was a compliance order with a penalty in August 2024.

Date By Action Violations covered
Aug 30, 2024 Tennessee Compliance order with a penalty 4 violations (1 health-based): Consumer Confidence Rule, Haloacetic Acids (HAA5), Lead and Copper Rule
Sep 23, 2016 Tennessee Compliance order with a penalty 6 violations (6 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Feb 17, 2003 Tennessee Boil water order 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule

What the violations mean

Haloacetic Acids (HAA5)

1 incident

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Where the water comes from

Dayton Water Dept draws water from 1 surface water intake. 1 other public water system has an emergency connection to Dayton Water Dept.

Annual water quality report

Dayton Water Dept 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

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 Tennessee.

Certified drinking water labs by state EPA guidance for private wells