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Public water system record

Trail of the Lakes MUD

Serves Atascocita, Harris County, TX · 9,480 people served

Federal records show 6 health-based violations and 2 monitoring/reporting issues for Trail of the Lakes MUD in the last ten years. The most serious issue in this window was a Gross Alpha, Excl. Radon and U violation that EPA lists as archived, not resolved.

  • TX1010617
  • HOUSTON
  • TX
  • 9,480 served

System profile

Source water Groundwater
ZIP 77046
EPA system ID TX1010617

Verify this system on EPA ECHO →

Health-based violations, last 10 years
6
Resolved
0
Unresolved
0
Archived by EPA
6
Any acute record
No
Monitoring issues, last 10 years
2

Key facts

  • Trail of the Lakes MUD draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
  • Highest measured level in the last 10 years: Gross Alpha, Excl. Radon and U, 37 pCi/L, federal limit 15 pCi/L (2.5 times the limit), 2024.
  • Most recent formal enforcement: signed compliance agreement by Texas, August 1999.
  • Record on file since 1985, with 10 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 2,876 service lines.

Check whether Trail of the Lakes MUD serves your address

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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
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 37 pCi/L, federal limit 15 pCi/L (2.5 times the limit)
 340 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
 340 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 27 pCi/L, federal limit 15 pCi/L (1.8 times the limit)
 340 Jan 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Jan 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
 340 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 29 pCi/L, federal limit 15 pCi/L (1.9 times the limit)
 340 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Oct 6, 2024 Resolved
Public Notice
OTHER
 Oct 6, 2024 Resolved

Full record since 1985

EPA's records for Trail of the Lakes MUD go back to 1985. Before October 19, 2016 they list 10 health-based violations (7 resolved, 3 archived by EPA without a recorded fix) and 9 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 1 0
1990s 6 0
2000s 3 9
2020s 6 2

Most recent health-based violation before October 19, 2016: Total Coliform, began November 2007, Resolved.

Show all 10 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Nov 1, 2007 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 5 pCi/L, federal limit 5 pCi/L (at or just above the limit)
 Oct 1, 2001 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
 Oct 1, 2001 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 10.4 pCi/L, federal limit 5 pCi/L (2.1 times the limit)
 Jan 1, 1999 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 31.4 pCi/L, federal limit 15 pCi/L (2.1 times the limit)
 Jan 1, 1999 Resolved
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.5 pCi/L, federal limit 5 pCi/L (1.5 times the limit)
 Jan 1, 1996 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 27.3 pCi/L, federal limit 15 pCi/L (1.8 times the limit)
 Jan 1, 1996 Resolved
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
 Jan 1, 1996 Archived
Combined Radium (-226 and -228)
Contaminant limit exceeded
 Jan 1, 1996 Archived
Combined Radium (-226 and -228)
Contaminant limit exceeded
 Dec 31, 1985 Archived

Enforcement actions

Texas regulators took 1 formal enforcement action against Trail of the Lakes MUD in 1999, filed as 2 records in EPA's data. The most recent was a signed compliance agreement in August 1999.

Date By Action Violations covered
Aug 30, 1999 Texas Signed compliance agreement 2 violations (2 health-based): Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U

What the violations mean

Gross Alpha, Excl. Radon and U

3 incidents

Test results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about each of these violations.

Combined Radium (-226 and -228)

3 incidents

Test results for Combined Radium (-226 and -228) were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about each of these violations.

Where the water comes from

Trail of the Lakes MUD draws water from 3 wells (1 of them for emergency, seasonal or other part-time use). It also has an emergency connection to Harris County MUD 278. 1 other public water system has an emergency connection to Trail of the Lakes MUD.

Emergency or part-time connections to

Annual water quality report

Trail of the Lakes MUD 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