ZipCheckup grade for 78586: C.
A mixed picture - some signals here are worth your attention.
Your top priority: match a filter's certification to the violations (19 health-based violations). Check your ZIP → NSF certified filters
San Benito, TX (78586): PFAS Detected in Mapped Water Systems - 58/100
EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: City of San Benito)
Health-based violation records by water system:
EPA records for the water systems mapped to 78586 in San Benito, TX contain 44 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 19 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 19 health-based violations and 25 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 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 520 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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The San Benito (78586) record carries 2 critical-level alerts alongside 0 high-priority findings across all tracked safety categories.
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 (8) CRITICAL
Your Water System
ZIP code 78586 in San Benito, Texas is mapped to the water system City of San Benito (EPA ID: TX0310007). This system provides water to approximately 24,250 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 San Benito | TX0310007 | 24,250 | Surface water |
| Military Hwy Water Supply Corporation Las Rusias | TX1080067 | 17,943 | Surface water |
| East Rio Hondo Water Supply Corporation | TX0310096 | 24,756 | Surface water |
| Harlingen Water Works System | TX0310002 | 85,900 | Surface water |
| Military Hwy Water Supply Corporation Progreso | TX1080234 | 12,198 | Groundwater |
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
- 78550 (Harlingen) - 5 mi - 55 violations recorded for mapped water systems
- 78553 (Harlingen) - 5 mi
- 78552 (Harlingen) - 7 mi - 59 violations recorded for mapped water systems
- 78568 (Lozano) - 7 mi
- 78567 (Los Indios) - 9 mi - 7 violations recorded for mapped water systems
- 78551 (Harlingen) - 9 mi
- 78575 (Olmito) - 9 mi - 8 violations recorded for mapped water systems
- 78583 (Rio Hondo) - 9 mi - 35 violations recorded for mapped water systems
- 78535 (Combes) - 10 mi - 14 violations recorded for mapped water systems
- 78559 (La Feria) - 11 mi - 44 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 San Benito (TX0310007) on EPA.gov.
5 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 78586. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFBA, PFPeA, PFHxA, PFOS, PFOA, PFHxS, PFHpA, PFBS.
Highest measured level: 0.0148 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 San Benito
Based on local data for ZIP 78586, 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 San Benito has 520 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 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 78586 safe to drink?
EPA SDWIS records 44 violations since 2021 across the water systems mapped to ZIP 78586 (primary system: City of San Benito), including 19 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 78586's water come from?
The recorded water source for City of San Benito, a system mapped to ZIP code 78586, is Surface water. This system serves approximately 24,250 people.
How does San Benito water compare to the national average?
San Benito'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 San Benito?
If City of San Benito 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 78586?
78586 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Cameron 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 78586's water?
Yes, PFAS have been detected in samples from water systems mapped to 78586. 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 78586?
FEMA records contain 520 flood insurance claims filed in ZIP code 78586; the recorded rated-zone value (the most frequent one if there are several claims) is C, 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). San Benito, TX (78586): PFAS Detected in Mapped Water Systems - 58/100. https://zipcheckup.com/report/78586/
@misc{zipcheckup-report-78586,
author = {{ZipCheckup}},
title = {{San Benito, TX (78586): PFAS Detected in Mapped Water Systems - 58/100}},
year = {2026},
url = {https://zipcheckup.com/report/78586/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 78586
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 78550 | Harlingen, TX | 5.1 mi | C | 55 |
| 78553 | Harlingen, TX | 5.1 mi | N/A | 0 |
| 78552 | Harlingen, TX | 7.2 mi | C | 59 |
| 78568 | Lozano, TX | 7.5 mi | N/A | 0 |
| 78567 | Los Indios, TX | 8.5 mi | N/A | 7 |
| 78551 | Harlingen, TX | 9.0 mi | N/A | 0 |
| 78575 | Olmito, TX | 9.0 mi | B | 8 |
| 78583 | Rio Hondo, TX | 9.0 mi | C | 35 |
| 78535 | Combes, TX | 9.8 mi | N/A | 14 |
| 78559 | La Feria, TX | 11.5 mi | C | 44 |
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