Public water system record
City of Horseshoe Bay
Serves Horseshoe Bay, Llano County, TX · 12,729 people served
Federal records show 8 health-based violations and 20 monitoring/reporting issues for City of Horseshoe Bay in the last ten years. The most serious issue in this window was a resolved Long Term 2 Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 8
- Resolved
- 8
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 20
Key facts
- City of Horseshoe Bay draws water from 2 surface water intakes.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2019.
- Most recent formal enforcement: compliance order with a penalty by Texas, December 2019.
- Record on file since 1979, with 11 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 9 unknown out of 4,134 service lines.
Check whether City of Horseshoe Bay serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2019 | 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 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Dec 25, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Jul 16, 2024 | Resolved |
|
Public Notice
OTHER
|
Nov 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Oct 29, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Sep 23, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 10, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 10, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 10, 2019 | Resolved |
|
Public Notice
OTHER
|
Feb 15, 2019 | Resolved |
|
Public Notice
OTHER
|
Feb 9, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
Full record since 1979
EPA's records for City of Horseshoe Bay go back to 1979. Before October 20, 2016 they list 11 health-based violations (9 resolved, 2 archived by EPA without a recorded fix) and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 2 | 0 |
| 1990s | 0 | 1 |
| 2000s | 6 | 6 |
| 2010 to October 19, 2016 | 3 | 2 |
| October 20, 2016 to 2019 | 5 | 15 |
| 2020s | 3 | 5 |
Most recent health-based violation before October 20, 2016: Revised Total Coliform Rule (acute), began September 2016, Resolved.
Show all 11 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule (acute)
Contaminant limit exceeded
|
Sep 1, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2004 | Resolved |
|
Fluoride
Contaminant limit exceeded
|
Jul 19, 1979 | Archived |
|
Fluoride
Contaminant limit exceeded
|
Jul 19, 1979 | Archived |
Enforcement actions
Texas regulators took 2 formal enforcement actions against City of Horseshoe Bay and issued 1 boil water order between 2005 and 2019. The most recent was a compliance order with a penalty in December 2019.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 3, 2019 | Texas | Compliance order with a penalty | 6 violations (4 health-based): Total Trihalomethanes (TTHMs), Public Notice, Haloacetic Acids (HAA5) |
| Sep 27, 2016 | Texas | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
| Dec 30, 2005 | Texas | Compliance order with a penalty | 6 violations (6 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
What the violations mean
Total Trihalomethanes (TTHMs)
5 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Long Term 2 Enhanced Surface Water Treatment Rule
1 incidentThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Haloacetic Acids (HAA5)
1 incidentHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
City of Horseshoe Bay draws water from 2 surface water intakes. 3 other community water systems buy water from City of Horseshoe Bay. 1 other public water system has an emergency connection to City of Horseshoe Bay.
Community systems that buy water from it
- Deerhaven WCID Austin, TX
- Pecan Utilities Oak Ridge Subdivision Austin, TX
- Sandy Harbor Subdivision Austin, TX
Annual water quality report
City of Horseshoe Bay 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