F
31

Failing Water Quality

Port Lavaca, TX 77979

Calhoun County · Population served: 16,507 · Data updated March 2026

Water Systems Serving This Area

🏔
CITY OF PORT LAVACA
Surface water · Pop. 11,545
PWSID: TX0290002
🏔
GBRA CALHOUN COUNTY RURAL WATER SYSTEM
Surface water · Pop. 4,482
PWSID: TX0290007
🌊
PORT ALTO HOA DISTRICT 1
Groundwater · Pop. 213
PWSID: TX0290027
🌊
PORT ALTO WSC
Groundwater · Pop. 96
PWSID: TX0290028
🌊
SHOALWATER FLATS ASSOCIATION
Groundwater · Pop. 171
PWSID: TX0290036

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
5.8
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

15 detected 4 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
6:2 FTS51.0 pptNo standardUnregulated
PFPeA16.3 pptNo standardUnregulated
PFBA14.2 pptNo standard500 pptUnregulated
PFPeA13.9 pptNo standardUnregulated
PFHxA10.0 pptNo standard400 pptUnregulated
PFBA7.7 pptNo standard500 pptUnregulated
PFHxS7.2 ppt10 ppt10 pptBelow limit
PFHxA7.2 pptNo standard400 pptUnregulated

Violation History (Last 5 Years)

98Total (5yr)
76Health-Based
2Major

Water Quality Summary

Understanding Your Water in Port Lavaca

Tap water quality in Port Lavaca, Texas (77979) receives an overall grade of F (Failing) with a score of 31 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 38 points below the Texas state average of 68. Compared to the national average (75), this area scores significantly lower. The area is served by 5 water systems providing water to approximately 16,507 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 4 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 98 violations, including 76 health-based violations.

Your Score 31/100 F
vs State 38 pts below Texas avg (68)
vs National 44 pts below national avg (75)

What a Grade F Means

A score of 31/100 indicates serious water quality failures in Port Lavaca, TX. The water system has significant violations, contaminant exceedances, or enforcement actions. Residents should strongly consider using a certified water filtration system for drinking and cooking water, requesting their utility's latest test results, and potentially having their water independently tested.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Tap water in Port Lavaca, Texas receives a grade of F (Failing) with a score of 31/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.

ZIP code 77979 is served by 5 water systems using surface water, groundwater sources, providing water to approximately 16,507 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 5.8 ppb in Port Lavaca, Texas. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

Yes — 15 PFAS compounds were detected in water serving Port Lavaca, Texas, and 4 exceed EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Port Lavaca, Texas have received 98 violations in the last 5 years, including 76 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, PFAS), residents in Port Lavaca, Texas should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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