ZipCheckup grade for 78596: C.
A mixed picture - some signals here are worth your attention.
Your top priority: match a filter's certification to the violations (8 health-based violations). Check your ZIP → NSF certified filters
Weslaco, TX (78596): PFAS Detected in Mapped Water Systems - 58/100
EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: City of Weslaco)
Health-based violation records by water system:
- Llano Grande Lake Park East (3)
- North Alamo Water Supply Corporation (2)
- City of Mercedes (1)
- City of Weslaco (1)
- Llano Grande Lake Park West (1)
EPA records for the water systems mapped to 78596 in Weslaco, TX contain 69 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 8 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 8 health-based violations and 61 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0015 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 596 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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Multiple critical-level conditions are documented for 78596 in Weslaco: 2 total, plus 0 high-priority findings.
Score Breakdown
Overall Home Safety Score: 58/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 78596 in Weslaco, Texas is mapped to the water system City of Weslaco (EPA ID: TX1080011). This system provides water to approximately 40,033 people from surface water sources.
There are 8 community water systems serving this area.
Lead & Copper in Your Water
The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.
| Metal | Measured Level | EPA Action Level | Status | Sample Date or Period |
|---|---|---|---|---|
| Copper | Action-level exceedance on record | 1.3 mg/L | Exceeds action level | Not present in ZipCheckup accepted source data |
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Weslaco | TX1080011 | 40,033 | Surface water |
| Military Hwy Water Supply Corporation Progreso | TX1080234 | 12,198 | Groundwater |
| North Alamo Water Supply Corporation | TX1080029 | 171,195 | Surface water |
| City of Mercedes | TX1080007 | 16,258 | Surface water |
| Military Hwy Water Supply Corporation Weslaco | TX1080235 | 1,584 | Surface water |
Other Water Quality Reports in Texas
- 73301 (Austin)
- 73344 (Austin)
- 73960 (Texhoma)
- 75001 (Addison) - 2 violations recorded for mapped water systems
- 75002 (Allen) - 14 violations recorded for mapped water systems
- 75006 (Carrollton) - 2 violations recorded for mapped water systems
- 75007 (Carrollton) - 1 violation recorded for mapped water systems
- 75009 (Celina) - 18 violations recorded for mapped water systems
- 75010 (Carrollton) - 1 violation recorded for mapped water systems
- 75011 (Carrollton)
- 75013 (Allen)
- 75014 (Irving)
- 75015 (Irving)
- 75016 (Irving)
- 75017 (Irving)
- 75019 (Coppell) - 5 violations recorded for mapped water systems
- 75020 (Denison) - 38 violations recorded for mapped water systems
- 75021 (Denison) - 30 violations recorded for mapped water systems
- 75022 (Flower Mound) - 18 violations recorded for mapped water systems
- 75023 (Plano)
Nearby Water Quality Reports
- 78599 (Weslaco) - <1 mi - 14 violations recorded for mapped water systems
- 78537 (Donna) - 4 mi - 30 violations recorded for mapped water systems
- 78570 (Mercedes) - 5 mi - 67 violations recorded for mapped water systems
- 78579 (Progreso) - 6 mi - 5 violations recorded for mapped water systems
- 78516 (Alamo) - 8 mi - 15 violations recorded for mapped water systems
- 78543 (Elsa) - 9 mi - 7 violations recorded for mapped water systems
- 78558 (La Blanca) - 9 mi - 5 violations recorded for mapped water systems
- 78562 (La Villa) - 10 mi - 5 violations recorded for mapped water systems
- 78559 (La Feria) - 10 mi - 44 violations recorded for mapped water systems
- 78589 (San Juan) - 11 mi - 10 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Weslaco (TX1080011) on EPA.gov.
4 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.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 78596. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFBA, PFHxA, PFPeA, PFOS, PFHxS, PFHpA, PFBS.
Highest measured level: 0.0138 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.
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.
Protect Your Home in Weslaco
Based on local data for ZIP 78596, 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 Weslaco has 596 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)
Gutter Installation & Repair
The median home in 78596 was built around 1980. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Weslaco is 1980; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing 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 NeedsService 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 78596 safe to drink?
EPA SDWIS records 69 violations since 2021 across the water systems mapped to ZIP 78596 (primary system: City of Weslaco), including 8 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 78596's water come from?
The recorded water source for City of Weslaco, a system mapped to ZIP code 78596, is Surface water. This system serves approximately 40,033 people.
How does Weslaco water compare to the national average?
Weslaco's Home Safety Score ranks lower than 85% of U.S. ZIP codes, and lower than 100% of ZIP codes within Texas.
How can I get my water tested in Weslaco?
If City of Weslaco 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.
Is lead a concern in 78596 tap water?
The Lead and Copper Rule record selected for 78596 reports a 90th-percentile lead result of 0.0015 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 78596?
78596 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Hidalgo 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 78596's water?
Yes, PFAS have been detected in samples from water systems mapped to 78596. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. 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 78596?
FEMA records contain 596 flood insurance claims filed in ZIP code 78596; the recorded rated-zone value (the most frequent one if there are several claims) is B, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Weslaco, TX (78596): PFAS Detected in Mapped Water Systems - 58/100. https://zipcheckup.com/report/78596/
@misc{zipcheckup-report-78596,
author = {{ZipCheckup}},
title = {{Weslaco, TX (78596): PFAS Detected in Mapped Water Systems - 58/100}},
year = {2026},
url = {https://zipcheckup.com/report/78596/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 78596
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 78599 | Weslaco, TX | <1 mi | N/A | 14 |
| 78537 | Donna, TX | 4.0 mi | C | 30 |
| 78570 | Mercedes, TX | 4.5 mi | B | 67 |
| 78579 | Progreso, TX | 5.8 mi | A | 5 |
| 78516 | Alamo, TX | 8.1 mi | B | 15 |
| 78543 | Elsa, TX | 8.8 mi | A | 7 |
| 78558 | La Blanca, TX | 9.1 mi | N/A | 5 |
| 78562 | La Villa, TX | 9.9 mi | N/A | 5 |
| 78559 | La Feria, TX | 10.1 mi | C | 44 |
| 78589 | San Juan, TX | 10.5 mi | B | 10 |
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