D
39

Poor Water Quality

Jefferson, TX 75657

Marion County · Population served: 15,692 · Data updated March 2026

Water Systems Serving This Area

🌊
WESTERN CASS WSC
Groundwater · Pop. 5,376
PWSID: TX0340066
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HARLETON WSC
Surface water · Pop. 4,107
PWSID: TX1020074
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CITY OF JEFFERSON
Surface water · Pop. 1,883
PWSID: TX1580001
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KELLYVILLE BEREA WSC
Groundwater · Pop. 1,125
PWSID: TX1580003
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HOLIDAY HARBOR
Groundwater · Pop. 249
PWSID: TX1580006

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.8
15 ppb 1 ppb Warning
Copper
1480.0
1300 ppb 300 ppb Exceeded

PFAS / Forever Chemicals

5 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFPeA164.0 pptNo standardUnregulated
PFBA10.0 pptNo standard500 pptUnregulated
PFHxA6.5 pptNo standard400 pptUnregulated
6:2 FTS6.3 pptNo standardUnregulated
PFBS4.8 ppt2000 ppt100 pptBelow limit

Violation History (Last 5 Years)

71Total (5yr)
35Health-Based
17Major

Water Quality Summary

Understanding Your Water in Jefferson

Tap water quality in Jefferson, Texas (75657) receives an overall grade of D (Poor) with a score of 39 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 30 points below the Texas state average of 68. Compared to the national average (75), this area scores significantly lower. The area is served by 6 water systems providing water to approximately 15,692 people, using surface water and groundwater sources. Testing has found elevated levels of Lead, Copper that warrant attention. PFAS testing detected 5 compounds, all currently below EPA limits. Over the past 5 years, water systems here have accumulated 71 violations, including 35 health-based violations.

Your Score 39/100 D
vs State 30 pts below Texas avg (68)
vs National 36 pts below national avg (75)

What a Grade D Means

A score of 39/100 signals poor water quality in Jefferson, TX. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

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

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.

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Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Tap water in Jefferson, Texas receives a grade of D (Poor) with a score of 39/100. 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 75657 is served by 6 water systems using surface water, groundwater sources, providing water to approximately 15,692 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 3.8 ppb in Jefferson, 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.

5 PFAS compounds were detected in water serving Jefferson, Texas, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Jefferson, Texas have received 71 violations in the last 5 years, including 35 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, copper), residents in Jefferson, 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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