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Public water system record

City of Dayton

Serves McMinnville and Dayton, Yamhill County, OR · 2,535 people served

Federal records show 1 health-based violation and 4 monitoring/reporting issues for City of Dayton in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • OR4100252
  • DAYTON
  • OR
  • 2,535 served

System profile

Source water Groundwater
ZIP 97114
EPA system ID OR4100252

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
4

Key facts

  • City of Dayton draws water from 7 wells and 2 springs.
  • Record on file since 1976, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 491 unknown out of 916 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
Groundwater Rule
Treatment technique failure
 140 Nov 1, 2018 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved
Groundwater Rule
Monitoring and reporting
 Dec 1, 2020 Resolved
E. coli
Monitoring and reporting
 Aug 1, 2010 Active
E. coli
Monitoring and reporting
 Aug 1, 2010 Active

Full record since 1976

EPA's records for City of Dayton go back to 1976. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 87 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 2
1990s 1 6
2000s 3 74
2010 to October 18, 2016 0 5
October 19, 2016 to 2019 1 0
2020s 0 2

Most recent health-based violation before October 19, 2016: Total Coliform (acute), began September 2007, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform (acute)
Contaminant limit exceeded
 Sep 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
 Jun 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
 Dec 1, 1993 Resolved

What the violations mean

Groundwater Rule

1 incident

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

City of Dayton draws water from 7 wells and 2 springs. 1 other community water system buys water from City of Dayton.

Community systems that buy water from it

Annual water quality report

City of Dayton 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 Oregon.

Certified drinking water labs by state EPA guidance for private wells