C
63

US Water Score: C

Laredo, TX 78043

Webb County · Population served: 260,046 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

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CITY OF LAREDO
Surface water · Pop. 260,046
PWSID: TX2400001

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
1.37
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

1 detected Below comparison values

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLHealth GuidelineStatus
PFBA10.6 pptNo standard500 pptNo federal MCL shown

Violation History (Last 5 Years)

9Total (5yr)
2Health-Based
2Major

Water Quality Summary

Understanding Your Water in Laredo

Tap water quality in Laredo, Texas (78043) receives an overall grade of C (Fair) with a score of 63 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 17 points below the Texas state average of 80. Compared to the national average (75), this area scores significantly lower. The area is served by City Of Laredo, a surface water system providing water to approximately 260,046 people. Testing has found elevated levels of Lead that warrant attention. PFAS testing detected 1 compound, all below the EPA final MCL values used for comparison. Over the past 5 years, water systems here have accumulated 9 violations, including 2 health-based violations.

Your Score 63/100 C
vs State 17 pts below Texas avg (80)
vs National 12 pts below national avg (75)

What a Grade C Means

A score of 63/100 indicates fair performance in the US Water Score model for Laredo, TX. The records show noteworthy concerns, such as elevated contaminant levels, violation history, or both. Review the detailed contaminant data and official utility reports before making decisions.

Surface water: sourced from rivers, lakes, or reservoirs

Health Information

What These Contaminants Mean for You

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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

Laredo, Texas receives an internal US Water Score grade of C (Fair) with a score of 63/100. Our model found some system-level concerns, such as violation history or elevated contaminant levels. Review your utility's Consumer Confidence Report and consult a qualified professional for household-specific health questions.

ZIP code 78043 is served by 1 water system using surface water sources, providing water to approximately 260,046 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 reported at 1.37 ppb in public-system records for Laredo, Texas. This is below the currently applicable EPA action level of 15 ppb, but may be above more protective health guidance; EPA's future LCRI action level is 10 ppb. Household plumbing can materially change tap-level exposure, so consider certified filtration and individual tap testing, especially where children are present.

1 PFAS compound were detected in water serving Laredo, Texas, with reported values below the EPA final MCL values used by this site. This comparison is informational: federal compliance timelines and the status of some PFAS standards are still evolving. Activated carbon or reverse osmosis filters can reduce some PFAS when appropriately certified and maintained.

Water systems serving Laredo, Texas have received 9 violations in the last 5 years, including 2 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 Laredo, 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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