Loading city report
Preparing Mercedes environmental records...
Review government records associated with Mercedes, Texas.
Toxin Scout is in beta. Please verify important findings with the linked sources.
Loading city report
Preparing Mercedes 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 Mercedes, TX from EPA SDWIS.
City of Mercedes
Active health-based drinking-water issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 16,258 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 Jan 2023.
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 Mercedes 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.
La Feria Main Canal-Arroyo Colorado
Reported: Nov 2026
Health-relevant causes: Mercury, Pathogens, Polychlorinated Biphenyls (pcbs)
Affected uses: Fishconsumption, Recreation
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
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.
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
No EPA nonattainment designation records shown for this report.
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
Harlingen Teege
Annual mean: 0.032 Parts per million
Observation year: 2025
Mission
Annual mean: 0.033 Parts per million
EPA primary exceedance count: 2 (Ozone 8-hour 2015)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reviewed: source query run Nov 2026
Brownfield sites are properties where redevelopment is complicated by the presence of hazardous substances.
Open data source: Search EPA ECHO2 sites with active cleanup or investigation status
502 West 2nd Street, Mercedes
Reported: Feb 2026
3001 E Expressway 83, Mercedes
Reported: Feb 2026
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
No MSHA mine or extraction site records shown for this report.
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.
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.
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
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
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 | 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 |
EPA testing found PFAS in water samples from the City of Mercedes. Results dated Jan 25, 2023 include PFHxA at 0.0033 micrograms per liter.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 12 violations for the City of Mercedes, including 4 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 Mercedes.
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 Harlingen Teege recorded an annual average of 0.032 Parts per million for ozone in 2025.
The monitoring station at Mission recorded an annual average of 0.033 Parts per million for ozone in 2025.
The radon data for Mercedes covers Hidalgo County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
No Superfund sites were returned for this city report.
This city report shows 2 brownfield sites: Cermenio Joe S Tire Service; H H Foods.
The county data for Mercedes 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.
The county data for Mercedes 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.
The county data for Mercedes 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.