What the Alton records show
- Water quality and PFAS
- 3 candidate water systems shown.Source date: Violations as of Q1 2026
- Air quality and emissions
- 3 monitoring records shown. Observation year: 2025.Source date: AQS data as of 2026
- Land and cleanup records
- No Superfund records returned in this report; No brownfield records returned in this report.
- Infrastructure and incidents
- No pipeline incident records returned in this report; 3 RMP facility records shown (earlier stored inventory, current location coverage unverified).
Water quality in Alton
Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Drinking Water Compliance
Drinking Water Compliance
Public water-system records for Alton, TX from EPA SDWIS.
City of La Joya
Active health-based drinking-water issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 3,033 people
City of Pharr
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 79,715 people
City of Mission
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 77,058 people
Data from EPA SDWIS
PFAS Screening
PFAS Screening
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Jun 2023 to 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 Alton drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation records shown for this report.
Impaired Water Bodies
Impaired Water Bodies
No health-relevant impairment records shown among the assessment records in this report.
Reviewed: source records as of 2026
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
Air quality and emissions in Alton
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
EPA AirToxScreen — Estimated Cancer Risk
EPA AirToxScreen — Estimated Cancer Risk
Hidalgo 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
Nonattainment Status
Nonattainment Status
No EPA nonattainment designation records shown for this report.
Air Quality Monitoring (AQS)
Air Quality Monitoring (AQS)
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Edinburg East Freddy Gonzalez Drive
Annual mean: 10.0 Micrograms/cubic meter (LC)
Observation year: 2025
Mission
Annual mean: 0.033 Parts per million
EPA primary exceedance count: 2 (Ozone 8-hour 2015)
Observation year: 2025
Annual mean: 30.3 Micrograms/cubic meter (25 C)
EPA primary exceedance count: 2 (PM10 24-hour 2006)
Observation year: 2025
Data from EPA AQS
Land cleanup and hazardous waste records in Alton
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
Underground Storage Tanks
Underground Storage Tanks
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
MSHA Mine and Extraction Sites
2
MSHA Mine and Extraction Sites
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
Hydraulic Fracturing Wells
2
Hydraulic Fracturing Wells
FracFocus Chemical Disclosure Registry — national registry of chemicals used in hydraulic fracturing operations, as reported by operators to the Ground Water Protection Council and Interstate Oil and Gas Compact Commission.
FracFocus well disclosures (2)
Data from FracFocus
County radon potential
County radon potential
Hidalgo County, TX
EPA Radon Zone Map (June 2024 release)
Hidalgo 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.
Infrastructure, incidents, and community health in Alton
FEMA Flood Zones
FEMA Flood Zones
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
No FEMA flood-zone records shown for this report.
EPA Risk Management Program Records
EPA Risk Management Program Records
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
Reviewed: 2000-present
Community Health Indicators
Community Health Indicators
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Hidalgo County, TexasPop. 888,367
County Health Rankings edition: 2024
Premature Death
- County
- 7,834
- State
- 7,875
- National
- 7,972
Poor or Fair Health
- County
- 30.7%
- State
- 17.9%
- National
- 14.2%
Poor Physical Health Days
- County
- 4.6
- State
- 3.3
- National
- 3.3
Poor Mental Health Days
- County
- 5.4
- State
- 4.6
- National
- 4.8
Adult Smoking
- County
- 15.5%
- State
- 13.3%
- National
- 15.0%
Adult Obesity
- County
- 44.5%
- State
- 36.2%
- National
- 34.0%
Air Pollution - Particulate Matter
- County
- 10.7
- State
- 8.6
- National
- 7.3
Drinking water violation indicator
- County
- Yes
- State
- N/A
- National
- N/A
Diabetes Prevalence
- County
- 18.0%
- State
- 11.0%
- National
- 9.6%
Life Expectancy
- County
- 77.9
- State
- 77.2
- National
- 77.6
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 7,834 | 7,875 | 7,972 |
| Poor or Fair Health | 30.7% | 17.9% | 14.2% |
| Poor Physical Health Days | 4.6 | 3.3 | 3.3 |
| Poor Mental Health Days | 5.4 | 4.6 | 4.8 |
| Adult Smoking | 15.5% | 13.3% | 15.0% |
| Adult Obesity | 44.5% | 36.2% | 34.0% |
| Air Pollution - Particulate Matter | 10.7 | 8.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 18.0% | 11.0% | 9.6% |
| Life Expectancy | 77.9 | 77.2 | 77.6 |
Environmental questions about Alton, Texas
Has PFAS been found in the water in Alton, Texas?
EPA testing found PFAS in water samples from the City of Pharr. Results dated Jun 6, 2023 to Dec 4, 2023 include PFBA at 0.0054 to 0.0112 micrograms per liter.
EPA testing found PFAS in water samples from the City of Mission. Results dated Nov 15, 2023 to Aug 6, 2024 include PFBA at 0.006 to 0.0073 micrograms per liter.
Check with the utility that serves your address for its testing results.
What do EPA records say about tap water in Alton, Texas?
EPA drinking water records on this page list 95 violations for the City of La Joya, including 9 marked active.
EPA drinking water records on this page list 4 violations for the City of Pharr.
EPA drinking water records on this page list 33 violations for the City of Mission.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
What do annual air monitors show near Alton, Texas?
Nearby EPA monitoring stations provide annual air quality measurements for Alton.
The monitoring station at Edinburg East Freddy Gonzalez Drive recorded an annual average of 10 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Mission recorded an annual average of 0.033 Parts per million for ozone in 2025.
The monitoring station at Mission recorded an annual average of 30.3 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
Is there radon in Alton, Texas?
The radon data for Alton covers Hidalgo County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
Are there Superfund or brownfield sites near Alton, Texas?
No Superfund or brownfield sites were returned for this city report.
What is the life expectancy in Alton, Texas?
The county data for Alton reports a life expectancy of 77.9 years in Hidalgo County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
What does the data say about premature deaths in Alton, Texas?
The county data for Alton reports 7,834 years of life lost to deaths before age 75 per 100,000 residents in Hidalgo 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.
Is there air pollution in Alton, Texas?
The county data for Alton lists fine-particle pollution (PM2.5) at 10.7 micrograms per cubic meter in Hidalgo County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.