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Public water system record

Deerhaven WCID

Serves an area of Llano County, TX · 336 people served

Federal records show 10 health-based violations and 11 monitoring/reporting issues for Deerhaven WCID in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX1500126
  • AUSTIN
  • TX
  • 336 served

System profile

Source water Purchased surface water
ZIP 78734
EPA system ID TX1500126

Verify this system on EPA ECHO →

Health-based violations, last 10 years
10
Resolved
10
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
11

Key facts

  • Deerhaven WCID buys its water from City of Horseshoe Bay.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit), 2019.
  • Most recent formal enforcement: compliance order (no penalty) by Texas, May 2020.
  • Record on file since 2010, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 115 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jul 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
 220 Apr 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.117 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Apr 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
 220 Jan 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 220 Jan 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Oct 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.118 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Oct 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jul 1, 2018 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jun 8, 2021 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2021 Resolved
Public Notice
OTHER
 Jun 11, 2019 Resolved
Public Notice
OTHER
 Jun 11, 2019 Resolved
Public Notice
OTHER
 Nov 16, 2018 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jul 5, 2018 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2016 Resolved
Public Notice
OTHER
 Jan 10, 2016 Resolved
Public Notice
OTHER
 Dec 11, 2015 Resolved

Full record since 2010

EPA's records for Deerhaven WCID go back to 2010. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 25 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 1 25
October 19, 2016 to 2019 9 7
2020s 0 2

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

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 Oct 1, 2016 Resolved

Enforcement actions

Texas regulators took 1 formal enforcement action against Deerhaven WCID in 2020. The most recent was a compliance order (no penalty) in May 2020.

Date By Action Violations covered
May 25, 2020 Texas Compliance order (no penalty) 8 violations (8 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)

What the violations mean

Total Trihalomethanes (TTHMs)

7 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Haloacetic Acids (HAA5)

3 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Where the water comes from

Deerhaven WCID buys its water from City of Horseshoe Bay. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Deerhaven WCID 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Deerhaven WCID for a copy.

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