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Public water system record

Lakeway Harbor Subdivision

Serves an area of Smith County, TX · 831 people served

Federal records show 18 health-based violations and 12 monitoring/reporting issues for Lakeway Harbor Subdivision in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.

  • TX2120064
  • AUSTIN
  • TX
  • 831 served

System profile

Source water Surface water
ZIP 78714
EPA system ID TX2120064

Verify this system on EPA ECHO →

Health-based violations, last 10 years
18
Resolved
18
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
12

Key facts

  • Lakeway Harbor Subdivision draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit), 2019.
  • Most recent formal enforcement: compliance order with a penalty by Texas, September 2020.
  • Record on file since 2002, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 398 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
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Apr 1, 2025 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Apr 1, 2025 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Jan 1, 2025 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jan 1, 2025 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 220 Oct 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Oct 1, 2024 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jul 1, 2024 Resolved No
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Feb 1, 2021 Resolved Yes
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Apr 1, 2020 Resolved Yes
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Jan 1, 2020 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.121 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Jan 1, 2020 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.122 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Oct 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Oct 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Oct 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Jul 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.133 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Jul 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Apr 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Apr 1, 2019 Resolved 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
 Aug 20, 2025 Active
Public Notice
OTHER
 Aug 20, 2025 Active
Public Notice
OTHER
 Jun 25, 2025 Active
Public Notice
OTHER
 Jun 25, 2025 Active
Public Notice
OTHER
 Nov 17, 2024 Resolved
Public Notice
OTHER
 Mar 31, 2021 Resolved
Public Notice
OTHER
 May 31, 2020 Resolved
Public Notice
OTHER
 Apr 16, 2020 Resolved
Public Notice
OTHER
 Apr 16, 2020 Resolved
Public Notice
OTHER
 Apr 16, 2020 Active
Public Notice
OTHER
 Oct 27, 2019 Active
Public Notice
OTHER
 Oct 27, 2019 Resolved

Full record since 2002

EPA's records for Lakeway Harbor Subdivision go back to 2002. Before October 19, 2016 they list no health-based violations and 5 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 2
2010 to October 18, 2016 0 3
October 19, 2016 to 2019 7 2
2020s 11 10

Enforcement actions

Texas regulators took 1 formal enforcement action against Lakeway Harbor Subdivision in 2020. The most recent was a compliance order with a penalty in September 2020.

Date By Action Violations covered
Sep 16, 2020 Texas Compliance order with a penalty 9 violations (9 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)

What the violations mean

Total Trihalomethanes (TTHMs)

9 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Haloacetic Acids (HAA5)

7 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Interim Enhanced Surface Water Treatment Rule

2 incidents

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Where the water comes from

Lakeway Harbor Subdivision draws water from 1 surface water intake. 1 smaller public system such as schools, businesses or campgrounds buys water from Lakeway Harbor Subdivision.

Annual water quality report

Lakeway Harbor Subdivision 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