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Public water system record

Montgomery County MUD 7

Serves The Woodlands, Montgomery County, TX · 12,528 people served

Federal records show 1 health-based violation and 5 monitoring/reporting issues for Montgomery County MUD 7 in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX1700169
  • THE WOODLANDS
  • TX
  • 12,528 served

System profile

Source water Purchased surface water
ZIP 77380
EPA system ID TX1700169

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
5

Key facts

  • Montgomery County MUD 7 buys its water from Sjra the Woodlands.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2017.
  • Record on file since 1992, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 3,067 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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2017 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
 Oct 1, 2025 Active
Public Notice
OTHER
 Jun 25, 2020 Resolved
Chlorine
Monitoring and reporting
 Jan 1, 2019 Resolved
Public Notice
OTHER
 Sep 17, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2013 Resolved

Full record since 1992

EPA's records for Montgomery County MUD 7 go back to 1992. Before October 19, 2016 they list no health-based violations and 3 monitoring or reporting violations.

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

What the violations mean

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Montgomery County MUD 7 buys its water from Sjra the Woodlands. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Montgomery County MUD 7 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