B
82

Good Water Quality

San Benito, TX 78586

Cameron County · Population served: 49,006 · Data updated March 2026

Water Systems Serving This Area

🏔
CITY OF SAN BENITO
Surface water · Pop. 24,250
PWSID: TX0310007
🏔
EAST RIO HONDO WSC
Surface water · Pop. 24,756
PWSID: TX0310096

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
1.3
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

14 detected 3 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBA14.8 pptNo standard500 pptUnregulated
PFPeA11.7 pptNo standardUnregulated
PFHxA11.2 pptNo standard400 pptUnregulated
PFBA9.6 pptNo standard500 pptUnregulated
PFHxA8.6 pptNo standard400 pptUnregulated
PFPeA8.0 pptNo standardUnregulated
PFOS5.6 ppt4 ppt4 pptExceeded
PFOA5.4 ppt4 ppt4 pptExceeded

Water Quality Summary

Understanding Your Water in San Benito

Tap water quality in San Benito, Texas (78586) receives an overall grade of B (Good) with a score of 82 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 14 points above the Texas state average of 68. The area is served by 2 water systems providing water to approximately 49,006 people, using surface water sources. Testing has found elevated levels of Lead that warrant attention. Notably, 3 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.

Your Score 82/100 B
vs State 14 pts above Texas avg (68)
vs National 7 pts above national avg (75)

What a Grade B Means

A score of 82/100 means the water in San Benito, TX is generally good and meets EPA standards, with only minor areas of concern. There may be low levels of detectable contaminants or a small number of non-critical violations. Most residents can feel comfortable with their tap water quality, though basic filtration can provide an extra layer of protection.

Surface water: sourced from rivers, lakes, or reservoirs

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

Based on EPA data, tap water in San Benito, Texas receives a grade of B (Good) with a score of 82/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 78586 is served by 2 water systems using surface water sources, providing water to approximately 49,006 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

Lead was detected at 1.3 ppb in San Benito, 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 — 14 PFAS compounds were detected in water serving San Benito, Texas, and 3 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 San Benito, Texas have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.

Based on detected contaminants (lead, PFAS), residents in San Benito, 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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