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Review government records associated with Liberty Hill, Texas.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Liberty Hill, TX from EPA SDWIS.
City of Liberty Hill
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 8,777 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASNo health-relevant impairment records shown among the assessment records in this report.
Reviewed: source records as of 2026
Reviewed: source records as of Q4 2025
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Williamson County
Assessment year: 2020
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
No EPA nonattainment designation records shown for this report.
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Austin Audubon Society — Leander, Texas
Annual mean: 0.042 Parts per million
EPA primary exceedance count: 1 (Ozone 8-hour 2015)
Observation year: 2025
Annual mean: 15.4 Micrograms/cubic meter (25 C)
Observation year: 2025
Annual mean: 7.0 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Seward Plant
Reported: 2024
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Williamson County, TX
EPA Radon Zone Map (June 2024 release)
Williamson County is EPA Radon Zone 3 (low potential). EPA defines Zone 3 counties as having predicted average indoor screening levels below 2 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
No FEMA flood-zone records shown for this report.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
No records dated within the last 5 years surfaced for this city report.
Reviewed: last 5 years
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Williamson County, TexasPop. 671,418
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 4,841 | 7,875 | 7,972 |
| Poor or Fair Health | 13.1% | 17.9% | 14.2% |
| Poor Physical Health Days | 2.9 | 3.3 | 3.3 |
| Poor Mental Health Days | 4.9 | 4.6 | 4.8 |
| Adult Smoking | 11.0% | 13.3% | 15.0% |
| Adult Obesity | 32.0% | 36.2% | 34.0% |
| Air Pollution - Particulate Matter | 9.9 | 8.6 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 8.8% | 11.0% | 9.6% |
| Life Expectancy | 81.0 | 77.2 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Liberty Hill.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 34 violations for the City of Liberty Hill, including 1 marked active.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Liberty Hill.
The monitoring station at Austin Audubon Society, Leander, Texas recorded an annual average of 0.042 Parts per million for ozone in 2025.
The monitoring station at Austin Audubon Society, Leander, Texas recorded an annual average of 15.4 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Austin Audubon Society, Leander, Texas recorded an annual average of 7 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The radon data for Liberty Hill covers Williamson County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Liberty Hill reports a life expectancy of 81.0 years in Williamson County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Liberty Hill reports 4,841 years of life lost to deaths before age 75 per 100,000 residents in Williamson County, Texas. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Liberty Hill lists fine-particle pollution (PM2.5) at 9.9 micrograms per cubic meter in Williamson County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving Enterprise Crude Pipeline LLC near Liberty Hill on Oct 5, 2020. The reported release was crude oil.