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Review government records associated with Helotes, Texas.
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Preparing Helotes environmental records...
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 Helotes, TX from EPA SDWIS.
Grey Forest Water System
Active health-based drinking-water issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 663 people
City of Leon Valley
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 7,794 people
City of Shavano Park
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 2,200 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Aug 2024.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Helotes drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation records shown for this report.
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Upper Leon Creek
Reported: Nov 2026
Health-relevant causes: Per- And Polyfluoroalkyl Substances (pfas), Polychlorinated Biphenyls (pcbs)
Affected uses: Fishconsumption
Data from EPA ATTAINS
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.
Bexar 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
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
San Antonio: Ozone
NonattainmentSerious8-Hour Ozone (2015 Standard)
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Camp Bullis — San Antonio, Texas
Annual mean: 4.8 Parts per billion
Observation year: 2025
Annual mean: 0.045 Parts per million
EPA primary exceedance count: 8 (Ozone 8-hour 2015)
Observation year: 2025
Frank Wing Municipal Court — San Antonio, Texas
Annual mean: 23.1 Micrograms/cubic meter (25 C)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reviewed: source records as of 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
Bexar County, TX
EPA Radon Zone Map (June 2024 release)
Bexar 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.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain). No base flood elevation determined.
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.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Bexar County, TexasPop. 2,059,530
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 | 8,349 | 7,875 | 7,972 |
| Poor or Fair Health | 21.0% | 17.9% | 14.2% |
| Poor Physical Health Days | 4.0 | 3.3 | 3.3 |
| Poor Mental Health Days | 5.3 | 4.6 | 4.8 |
| Adult Smoking | 13.2% | 13.3% | 15.0% |
| Adult Obesity | 38.8% | 36.2% | 34.0% |
| Air Pollution - Particulate Matter | 9.1 | 8.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 12.7% | 11.0% | 9.6% |
| Life Expectancy | 76.7 | 77.2 | 77.6 |
EPA testing found PFAS in water samples from the City of Leon Valley. Results dated Aug 13, 2024 include PFBS at 0.0031 micrograms per liter.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 5 violations for Grey Forest Water System.
EPA drinking water records on this page list 67 violations for the City of Leon Valley.
EPA drinking water records on this page list 13 violations for the City of Shavano Park.
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 Helotes.
The monitoring station at Camp Bullis, San Antonio, Texas recorded an annual average of 4.8 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Camp Bullis, San Antonio, Texas recorded an annual average of 0.045 Parts per million for ozone in 2025.
The monitoring station at Frank Wing Municipal Court, San Antonio, Texas recorded an annual average of 23.1 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
The radon data for Helotes covers Bexar 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 Helotes reports a life expectancy of 76.7 years in Bexar 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 Helotes reports 8,349 years of life lost to deaths before age 75 per 100,000 residents in Bexar 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 Helotes lists fine-particle pollution (PM2.5) at 9.1 micrograms per cubic meter in Bexar County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.