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Public water system record

City of Denison

Serves an area of Grayson County, TX that includes Denison · 27,500 people served

Federal records show no health-based violations and 8 monitoring/reporting issues for City of Denison in the last ten years.

  • TX0910003
  • DENISON
  • TX
  • 27,500 served

System profile

Source water Surface water
ZIP 75020
EPA system ID TX0910003

Verify this system on EPA ECHO →

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

Key facts

  • City of Denison draws water from 1 surface water intake.
  • Most recent formal enforcement: compliance order with a penalty by Texas, April 2015.
  • Record on file since 1993, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 18 lead and 7,837 unknown out of 12,486 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.

None since October 2016.

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, 2023 Resolved
Public Notice
OTHER
 Feb 19, 2021 Resolved
CARBON, TOTAL
Monitoring and reporting
 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2018 Resolved
Public Notice
OTHER
 Feb 8, 2016 Resolved
Public Notice
OTHER
 Apr 10, 2013 Resolved
Public Notice
OTHER
 Mar 11, 2012 Resolved
E. coli
Monitoring and reporting
 Nov 1, 2011 Resolved

Full record since 1993

EPA's records for City of Denison go back to 1993. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 13 monitoring or reporting violations.

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

Most recent health-based violation before October 19, 2016: Total Coliform, began September 2014, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Sep 1, 2014 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 May 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2009 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Aug 1, 2008 Resolved

Enforcement actions

Texas regulators took 1 formal enforcement action against City of Denison in 2015. The most recent was a compliance order with a penalty in April 2015.

Date By Action Violations covered
Apr 4, 2015 Texas Compliance order with a penalty 5 violations (1 health-based): Total Coliform, Public Notice, E. coli

Where the water comes from

City of Denison draws water from 1 surface water intake. 6 other community water systems buy water from City of Denison.

Community systems that buy water from it

Annual water quality report

City of Denison 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 Texas.

Certified drinking water labs by state EPA guidance for private wells