Port Lavaca, TX (77979): PFAS Detected in Mapped Water Systems
EPA data combined for 3 water systems mapped to this ZIP (largest mapped system: City of Port Lavaca)
Health-based violation records by water system:
EPA records for the water systems mapped to 77979 in Port Lavaca, TX contain 49 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 33 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 33 health-based violations and 16 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0023 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 476 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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2 critical-level and 0 high-priority alerts emerge from the full safety dataset reviewed for 77979 in Port Lavaca.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 77979 in Port Lavaca, Texas is mapped to the water system City of Port Lavaca (EPA ID: TX0290002). This system provides water to approximately 12,000 people from surface water sources.
There are 3 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Port Lavaca | TX0290002 | 12,000 | Surface water |
| Gbra Calhoun County Rural Water System | TX0290007 | 4,482 | Surface water |
| Port Oconnor Improvement District | TX0290065 | 1,139 | 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
- 77978 (Point Comfort) - 6 mi
- 77969 (La Salle) - 12 mi - 2 violations recorded for mapped water systems
- 77977 (Placedo) - 14 mi - 10 violations recorded for mapped water systems
- 77983 (Seadrift) - 14 mi - 6 violations recorded for mapped water systems
- 77991 (Vanderbilt) - 14 mi - 2 violations recorded for mapped water systems
- 77971 (Lolita) - 15 mi
- 77951 (Bloomington) - 17 mi - 10 violations recorded for mapped water systems
- 77982 (Port O Connor) - 17 mi - 6 violations recorded for mapped water systems
- 77990 (Tivoli) - 19 mi
- 77970 (La Ward) - 19 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Port Lavaca (TX0290002) 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 77979. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: 6:2 FTS, PFPeA, PFBA, PFHxA, PFHxS, PFBS, PFOA, PFOS.
Highest measured level: 0.051 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) CRITICAL
Home & Infrastructure (6) MODERATE
Possible home maintenance concerns - talk to a local expert.
Call (855) 384-4856Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.
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 Port Lavaca
Based on local data for ZIP 77979, 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 Port Lavaca has 476 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 77979 was built around 1977. 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 Port Lavaca is 1977; 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
Homes built around 1977 may be on their second or third roof. A professional inspection can catch damage before leaks start.
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 77979 safe to drink?
EPA SDWIS records 49 violations since 2021 across the water systems mapped to ZIP 77979 (primary system: City of Port Lavaca), including 33 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 77979's water come from?
The recorded water source for City of Port Lavaca, a system mapped to ZIP code 77979, is Surface water. This system serves approximately 12,000 people.
How can I get my water tested in Port Lavaca?
If City of Port Lavaca 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 77979 tap water?
The Lead and Copper Rule record selected for 77979 reports a 90th-percentile lead result of 0.00231 mg/L for a water system mapped to this ZIP (record date 2024-12-31). 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 77979?
77979 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Calhoun 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 77979's water?
Yes, PFAS have been detected in samples from water systems mapped to 77979. 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 77979?
FEMA records contain 476 flood insurance claims filed in ZIP code 77979; 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. 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). Port Lavaca, TX (77979): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/77979/
@misc{zipcheckup-report-77979,
author = {{ZipCheckup}},
title = {{Port Lavaca, TX (77979): PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/77979/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 77979
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 77978 | Point Comfort, TX | 6.4 mi | N/A | 0 |
| 77969 | La Salle, TX | 11.6 mi | N/A | 2 |
| 77977 | Placedo, TX | 13.6 mi | N/A | 10 |
| 77983 | Seadrift, TX | 14.0 mi | N/A | 6 |
| 77991 | Vanderbilt, TX | 14.3 mi | N/A | 2 |
| 77971 | Lolita, TX | 14.8 mi | N/A | 0 |
| 77951 | Bloomington, TX | 16.6 mi | N/A | 10 |
| 77982 | Port O Connor, TX | 17.0 mi | N/A | 6 |
| 77990 | Tivoli, TX | 19.0 mi | N/A | 0 |
| 77970 | La Ward, TX | 19.4 mi | N/A | 0 |
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