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Updated 2026-10-15
County water report

Travis County Water Quality: 6 Cities Ranked by the Records

Travis County, Texas: 6 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my systemOpen on the mapPrivate wells in Travis 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.

Perfluorooctanesulfonic acid (PFOS)Detected in 2 systems of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest14.4 ng/L
Perfluorononanoic acid (PFNA)Detected in 1 system of 6 tested10 ng/L federal MCL (2024) · US EPAHighest25.2 ng/L
  • CITY OF PFLUGERVILLE25.2 ng/LSample date: 2025-03-17 to 2025-12-01
  • AUSTINS COLONYNot detected · below 4.0 ng/L lab reporting limitSample date: 2025-06-23 to 2025-12-16
  • CITY OF AUSTIN WATER & WASTEWATERNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-10-02 to 2024-07-30
  • CITY OF LAGO VISTANot detected · below 4.0 ng/L lab reporting limitSample date: 2024-03-19 to 2025-02-10
  • CITY OF LEANDERNot detected · below 4.0 ng/L lab reporting limitSample date: 2024-05-13 to 2025-02-20
  • CITY OF MANORNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-05-08 to 2024-08-05
LithiumDetected in 4 systems of 6 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest21 µg/L
Perfluorooctanoic acid (PFOA)Detected in 1 system of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest6.3 ng/L
  • CITY OF PFLUGERVILLE6.3 ng/LSample date: 2025-03-17 to 2025-12-01
  • AUSTINS COLONYNot detected · below 4.0 ng/L lab reporting limitSample date: 2025-06-23 to 2025-12-16
  • CITY OF AUSTIN WATER & WASTEWATERNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-10-02 to 2024-07-30
  • CITY OF LAGO VISTANot detected · below 4.0 ng/L lab reporting limitSample date: 2024-03-19 to 2025-02-10
  • CITY OF LEANDERNot detected · below 4.0 ng/L lab reporting limitSample date: 2024-05-13 to 2025-02-20
  • CITY OF MANORNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-05-08 to 2024-08-05
Perfluorohexanesulfonic acid (PFHxS)Detected in 3 systems of 6 tested10 ng/L federal MCL (2024) · US EPAHighest7.2 ng/L
Total trihalomethanes (TTHM)Detected in 1 system80 ppb federal MCL · US EPAHighest45.5 ppb
Haloacetic acids (HAA5)Detected in 1 system60 ppb federal MCL · US EPAHighest15.6 ppb
Lead (90th percentile)Detected in 5 systems of 6 tested15 µg/L federal action level · US EPAHighest2.16 µg/L
7 more contaminants detectedShow
Perfluorobutanesulfonic acid (PFBS)Detected in 4 systems of 6 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest9.7 ng/L
Perfluorohexanoic acid (PFHxA)Detected in 3 systems of 6 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest9.3 ng/L
Water hardnessDetected in 1 systemAesthetic, no federal health limit · USGSHighest5.4 gpg
Perfluorobutanoic acid (PFBA)Detected in 6 systemsNo federal or state limit; shown for transparencyHighest8.4 ng/L
Perfluoroheptanoic acid (PFHpA)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest4.9 ng/L
  • CITY OF PFLUGERVILLE4.9 ng/LSample date: 2025-03-17 to 2025-12-01
  • AUSTINS COLONYNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-06-23 to 2025-12-16
  • CITY OF AUSTIN WATER & WASTEWATERNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-10-02 to 2024-07-30
  • CITY OF LAGO VISTANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-03-19 to 2025-02-10
  • CITY OF LEANDERNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-05-13 to 2025-02-20
  • CITY OF MANORNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-05-08 to 2024-08-05
Perfluoropentanoic acid (PFPeA)Detected in 3 systems of 6 testedNo federal or state limit; shown for transparencyHighest13.3 ng/L
Perfluoroundecanoic acid (PFUnA)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest2.7 ng/L
  • CITY OF PFLUGERVILLE2.7 ng/LSample date: 2025-03-17 to 2025-12-01
  • AUSTINS COLONYNot detected · below 2.0 ng/L lab reporting limitSample date: 2025-06-23 to 2025-12-16
  • CITY OF AUSTIN WATER & WASTEWATERNot detected · below 2.0 ng/L lab reporting limitSample date: 2023-10-02 to 2024-07-30
  • CITY OF LAGO VISTANot detected · below 2.0 ng/L lab reporting limitSample date: 2024-03-19 to 2025-02-10
  • CITY OF LEANDERNot detected · below 2.0 ng/L lab reporting limitSample date: 2024-05-13 to 2025-02-20
  • CITY OF MANORNot detected · below 2.0 ng/L lab reporting limitSample date: 2023-05-08 to 2024-08-05
19 PFAS tested, none detected in any systemShow

Tested in these 6 systems: AUSTINS COLONY, CITY OF AUSTIN WATER & WASTEWATER, CITY OF LAGO VISTA, CITY OF LEANDER, CITY OF MANOR, CITY OF PFLUGERVILLE

  • 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)
  • Perfluorodecanoic acid (PFDA)
  • Perfluorododecanoic acid (PFDoA)
  • Perfluoroheptanesulfonic acid (PFHpS)
  • Perfluoropentanesulfonic acid (PFPeS)
  • Perfluorotetradecanoic acid (PFTA)
  • Perfluorotridecanoic acid (PFTrDA)
6 cities

Cities ranked by the records

Showing 6 of 6 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 Travis County2 of 6 city reports had a PFAS sample above a 2024 EPA limit
  1. Pflugerville14.4 ng/L
  2. Austin4.8 ng/L
4.0 ng/L federal MCL · PFOS, ng/LPFAS in Texas
Lead

0of 6 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
Hard water

1city reports hardness · Austin, 5.4 gpg

None above 7 gpg, the USGS threshold for hard water. An aesthetic measure with no federal health limit.

Hard water explained
Who supplies the county

Largest water systems

  1. AustinCITY OF AUSTIN WATER & WASTEWATER · TX2270001
    1,115,323 served
  2. LeanderCITY OF LEANDER · TX2460012
    98,330 served
  3. PflugervilleCITY OF PFLUGERVILLE · TX2270014
    63,464 served
  4. ManorCITY OF MANOR · TX2270002
    19,620 served
  5. Hornsby BendAUSTINS COLONY · TX2270255
    9,987 served
  6. Lago VistaCITY OF LAGO VISTA · TX2270092
    8,698 served
Questions

Frequently asked

How does Travis County tap water compare across cities?

PurityMap ranks 6 cities in Travis 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 Leander's main water system: CITY OF LEANDER · PWSID TX2460012 · 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 Travis County cities had a PFAS sample above a 2024 EPA limit?

2 of 6 Travis County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Pflugerville (PFOS 14.4 ng/L), Austin (PFOS 4.8 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 6.

Is there lead in Travis County tap water?

Utilities report lead as a 90th-percentile result from home taps. 5 of 6 Travis 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.

Does Travis County have hard water?

Hardness is published in utility water-quality reports for 1 Travis County city on record; the hardest is Austin at 5.4 grains per gallon. Hardness affects scale and appliances; it is not a health finding.

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