Health Violations Found

Rio Grande City, TX (78582): PFAS Detected in Mapped Water Systems

EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: City of Rio Grande City)

Health Violations Found PFAS Detected

Health-based violation records by water system:

EPA records for the water systems mapped to 78582 in Rio Grande City, TX contain 135 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 30 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score N/A
Water Quality Issues 30 health-based violation records
Lead Risk Below action level Below the reporting limit, 90th percentile, sample period ending 2024-12-31
NFIP Claim History Claim records 49 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 30 health-based violations and 105 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
  • Flood 49 cumulative NFIP claim records. Check the current FEMA map for a specific address.
Contaminant Summary
Health Violations
135 violations 30 health-based PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
8
Water Systems
18,912
People Served
30
Health Violations (since 2021)Median is 0
Surface water
Water Source
Zone 3
County Radon Potential · Low
$102K
Median Home Value48% below state median ($195K)

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Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
0/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
100/100
Observed
Annual EPA AirData AQI
Unknown
Evidence missing

Required domains

Drinking water
50/100
Indoor environment
100/100
Outdoor environment
Unknown

Coverage: 3 of 4 components and 2 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (6) CRITICAL

Your Water System

ZIP code 78582 in Rio Grande City, Texas is mapped to the water system City of Rio Grande City (EPA ID: TX2140018). This system provides water to approximately 18,912 people from surface water sources.

There are 8 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
City of Rio Grande City TX2140018 18,912 Surface water
Rio Water Supply Corporation TX2140016 6,939 Surface water
Union Water Supply Corporation TX2140004 5,793 Surface water
City of La Grulla TX2140006 9,500 Surface water
City of Roma TX2140007 19,464 Surface water

Other Water Quality Reports in Texas

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Rio Grande City (TX2140018) on EPA.gov.

3 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

Compliance History

2021 1 2022 1 2023 3 2024 10 2025 5
Health-based (MCL/TT) Other violations

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 78582.

Detected compounds: PFBA, PFPeA, PFHxA.

Highest measured level: 0.0119 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Rio Grande City

Based on local data for ZIP 78582, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Rio Grande City has 49 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Roofing Inspection & Repair

Active weather alerts in Texas increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 78582 safe to drink?

EPA SDWIS records 135 violations since 2021 across the water systems mapped to ZIP 78582 (primary system: City of Rio Grande City), including 30 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 78582's water come from?

The recorded water source for City of Rio Grande City, a system mapped to ZIP code 78582, is Surface water. This system serves approximately 18,912 people.

How can I get my water tested in Rio Grande City?

If City of Rio Grande City supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

What is the radon risk for 78582?

78582 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Starr County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 78582's water?

Yes, PFAS have been detected in samples from water systems mapped to 78582. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

What does the NFIP claim history show for ZIP 78582?

FEMA records contain 49 flood insurance claims filed in ZIP code 78582; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Rio Grande City, TX (78582): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/78582/
BibTeX 
@misc{zipcheckup-report-78582,
  author = {{ZipCheckup}},
  title  = {{Rio Grande City, TX (78582): PFAS Detected in Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/78582/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 78582

ZIP Code City, State Distance Grade Violations
78547 Garciasville, TX 8.5 mi A 7
78584 Roma, TX 12.0 mi N/A 58
78548 Grulla, TX 12.4 mi N/A 59
78595 Sullivan City, TX 17.5 mi B 52
78565 Los Ebanos, TX 18.6 mi A 2
78585 Salineno, TX 20.5 mi N/A 0
78591 Santa Elena, TX 22.4 mi N/A 0
78545 Falcon Heights, TX 23.1 mi N/A 36
78560 La Joya, TX 23.3 mi B 51
78576 Penitas, TX 23.9 mi B 59

Contaminants Detected in 78582

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 13/17 risk factors Data sources →
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