Llano County Water Quality: 2 Cities Ranked by the Records

Name: Llano County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Llano County, Texas: 2 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Llano County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

LithiumDetected in 1 system of 2 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest9.8 µg/L

KINGSLAND WSC9.8 µg/LSample date: 2023-04-25 to 2024-01-18
CITY OF HORSESHOE BAYNot detected · below 9.0 µg/L lab reporting limitSample date: 2024-03-25 to 2024-12-04

Lead (90th percentile)Detected in 2 systems15 µg/L federal action level · US EPAHighest4.11 µg/L

CITY OF HORSESHOE BAY4.11 µg/LMonitoring period: 2023–2025
KINGSLAND WSC0.911 µg/LMonitoring period: 2023–2025

Perfluorobutanoic acid (PFBA)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest5.5 ng/L

CITY OF HORSESHOE BAY5.5 ng/LSample date: 2024-03-25 to 2025-02-10
KINGSLAND WSCNot detected · below 5.0 ng/L lab reporting limitSample date: 2023-04-25 to 2024-03-15

28 PFAS tested, none detected in any systemShow

Tested in these 2 systems: CITY OF HORSESHOE BAY, KINGSLAND WSC

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

2 cities

Cities ranked by the records

1
KingslandKINGSLAND WSC
No PFAS detectedLead below action level
Open city report →
2
Horseshoe BayCITY OF HORSESHOE BAY
PFAS detected, within limitLead below action level
Open city report →

Showing 2 of 2 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Llano CountyPFAS detected in 1 of 2 cities; none had a sample above a 2024 EPA limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in Texas

Lead

0of 2 cities above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Texas

Who supplies the county

Largest water systems

KingslandKINGSLAND WSC · TX1500012
12,975 served
Horseshoe BayCITY OF HORSESHOE BAY · TX1500015
12,729 served

Questions

Frequently asked

How does Llano County tap water compare across cities?

PurityMap ranks 2 cities in Llano County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Kingsland's main water system: KINGSLAND WSC · PWSID TX1500012 · Purity Score 99 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Llano County cities had a PFAS sample above a 2024 EPA limit?

None of the 2 Llano County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 1.

Is there lead in Llano County tap water?

Utilities report lead as a 90th-percentile result from home taps. 2 of 2 Llano County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

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