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Public water system record

City of Ovilla

Serves Ovilla, Ellis County, TX · 4,532 people served

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

  • TX0700067
  • OVILLA
  • TX
  • 4,532 served

System profile

Source water Purchased surface water
ZIP 75154
EPA system ID TX0700067

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
0

Key facts

  • City of Ovilla buys its water from Dallas Water Utility.
  • Record on file since 1991, with 6 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 1,297 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, and no monitoring or reporting violations either.

Full record since 1991

EPA's records for City of Ovilla go back to 1991. Before October 19, 2016 they list 6 health-based violations (5 resolved, 1 archived by EPA without a recorded fix) and 20 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 1 2
2000s 5 14
2010 to October 18, 2016 0 4

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2008, Resolved.

Show all 6 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Apr 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Oct 1, 2007 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jul 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
 Nov 1, 1991 Archived

Where the water comes from

City of Ovilla buys its water from Dallas Water Utility. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

City of Ovilla 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 Texas.

Certified drinking water labs by state EPA guidance for private wells