What do the EPA sampling records for City of Horseshoe Bay show?

The EPA records for City of Horseshoe Bay (PWSID: TX1500015) show 9 health-based violations in the SDWIS compliance database and 1 PFAS compound detection above the minimum reporting level in EPA UCMR 5 monitoring data. Records on this page are sourced directly from EPA SDWIS and UCMR 5 datasets.

What does 'Detected above MRL' mean in PFAS records?

MRL stands for Minimum Reporting Level — the lowest concentration the testing equipment can reliably measure. 'Detected above MRL' means the analyte was found at a measurable concentration. Detection above MRL is not itself a regulatory violation. EPA has set Maximum Contaminant Levels (MCLs) for PFOA and PFOS at 4 ppt and for PFNA, PFHxS, and HFPO-DA at 10 ppt (April 2024 rule). Detections below those MCLs do not constitute a regulatory violation.

Does this mean Texas's water is unsafe?

These records reflect what EPA compliance monitoring and UCMR 5 sampling returned. A detection above MRL does not by itself indicate the water is unsafe. A health-based violation in SDWIS means a contaminant exceeded its legal limit during the violation period — it does not necessarily mean current water is out of compliance. For current compliance status, consult City of Horseshoe Bay's most recent Consumer Confidence Report or contact the utility directly.

How do I get an independent water test?

For independent verification, use a state-certified laboratory. Certified labs can test for PFAS (using EPA Method 533 or 537.1), lead, nitrates, bacteria, and dozens of other contaminants. Find certified labs in Texas at waterutilityreport.com/labs.

Back to City of Horseshoe Bay

Official EPA Records

City of Horseshoe Bay

Official EPA contamination & sampling records · Texas, TX

PWSID: TX150001512,729 people servedSurface waterData refreshed: 2026-04-15

What official records show

Health violations

All 9 resolved · Most recent: June 2024

PFAS detected (UCMR 5)

1 analytes

From 207 total monitoring samples · Last: September 2024

Above MCL level (monitoring)

None

No PFAS above EPA MCL thresholds in monitoring data

EPA compliance records for City of Horseshoe Bay (PWSID: TX1500015) in Texas, TX show 9 health-based violations recorded in EPA SDWIS, all resolved and 1 PFAS compound detected above the minimum reporting level in EPA UCMR 5 monitoring data (most recent sample: September 2024). All records on this page are sourced from EPA SDWIS and the UCMR 5 dataset. This is official monitoring data — not a health risk determination.

Health-Based Violation History

Source: EPA SDWIS (Safe Drinking Water Information System). A health-based violation means a contaminant exceeded the legal Maximum Contaminant Level (MCL) or a required treatment technique was not met during the violation period. Resolved violations indicate the utility returned to compliance.

Contaminant	Type	Violation date	Status
Unspecified	Treatment Technique	Jun 2024	Resolved Aug 2024
Haloacetic Acids (HAA5)	MCL Violation	Jul 2021	Resolved Dec 2021
Haloacetic Acids (HAA5)	MCL Violation	Jul 2021	Resolved Dec 2021
Haloacetic Acids (HAA5)	MCL Violation	Apr 2019	Resolved Sep 2019
Total Trihalomethanes (TTHMs)	MCL Violation	Jan 2019	Resolved Apr 2019
Haloacetic Acids (HAA5)	MCL Violation	Jan 2019	Resolved Sep 2019
Haloacetic Acids (HAA5)	MCL Violation	Oct 2018	Resolved Sep 2019
Coliform (TCR)	Treatment Technique	Dec 2016	Resolved Aug 2019
Coliform (TCR)	MCL Violation	Sep 2016	Resolved May 2017

Showing 9 health-based violations. View full violation history on EPA ECHO ↗

Official Water Sampling Events (EPA UCMR 5)

EPA UCMR 5 monitoring conducted 10 sampling events at City of Horseshoe Bay. Each event tests water drawn from a designated sampling point for PFAS compounds. Source: EPA Unregulated Contaminant Monitoring Rule 5, 2023–2025.

Sample date	Sampling point	Compounds tested	Detected above MRL
February 2025	EP002	25	None
February 2025	EP001	25	None
December 2024	EP002	4	None
December 2024	EP001	4	None
September 2024	EP001	29	1
September 2024	EP002	4	None
June 2024	EP001	29	None
June 2024	EP002	29	None
March 2024	EP001	29	None
March 2024	EP002	29	None

Sampling events represent distinct official water sample records from EPA UCMR 5. Learn about UCMR 5 methodology ↗

PFAS Compounds Detected (EPA UCMR 5)

Source: EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). These are compounds detected above the minimum reporting level at a sampling point for this utility. A compound marked above MCL was detected at a concentration exceeding the EPA Maximum Contaminant Level finalized in April 2024.

Compound	Code	Result	EPA MCL	Sample date	Sample point
Perfluorobutanoic acid	PFBA	5.5 ppt	No MCL set	Sep 2024	EP001

Showing 1 detection above MRL from 207 total UCMR 5 monitoring records. View full PFAS monitoring table →

What this does not mean

—Violations do not indicate current non-compliance. A health-based violation that is marked resolved means the utility has returned to compliance per EPA records. Historic violations are shown for transparency, not to imply ongoing risk.
—PFAS detections above MRL are not themselves violations. UCMR 5 monitoring is a surveillance program. Detection does not mean the utility violated a regulation. The 2024 EPA PFAS rule (MCLs for PFOA, PFOS, etc.) has a compliance deadline of 2029.
—This page does not assess health risk. WaterUtilityReport.com presents official government records — we do not make health risk determinations, safety certifications, or compliance judgments. Consult a licensed water quality specialist or physician for health advice.
—Records may be incomplete. EPA SDWIS and UCMR 5 represent what was reported to the EPA. Not all utilities or contaminants are covered. Small systems (<10,000 people) may not have been required to participate in UCMR 5 monitoring.

Independent Verification

Get your water tested by a certified lab

EPA compliance data shows what utilities report to regulators. An independent test from a certified laboratory confirms what is actually coming out of your tap at the point of use. Labs in Texas can test for PFAS (EPA Method 533 or 537.1), lead, nitrates, bacteria, and more.

Find certified labs in Texas →PFAS treatment guide Browse all treatment options

Official Records FAQs

Official Data Sources

EPA SDWIS — Compliance & Violations

EPA ECHO: City of Horseshoe Bay Detailed Facility Report

EPA UCMR 5 — PFAS Monitoring Data

EPA UCMR 5 Program Overview

EPA PFAS Rule (April 2024)

EPA PFAS in Drinking Water Rule

City of Horseshoe Bay full report Texas state report PFAS monitoring records Certified labs in Texas Data methodology

Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.

Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data