A
85

Excellent Water Quality

Thomaston, AL 36783

Marengo County · Population served: 5,376 · Data updated March 2026

Water Systems Serving This Area

🌊
THOMASTON WATER WORKS & GAS BOARD
Groundwater · Pop. 960
PWSID: AL0000919
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SOUTH MARENGO CO WATER & FIRE PRO AUTH
Surface water · Pop. 4,416
PWSID: AL0001439

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
5.0
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

7 detected 2 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBS33.0 ppt2000 ppt100 pptBelow limit
PFOS15.0 ppt4 ppt4 pptExceeded
PFPeA13.0 pptNo standardUnregulated
PFOA9.2 ppt4 ppt4 pptExceeded
PFHxA8.6 pptNo standard400 pptUnregulated
PFBA6.2 pptNo standard500 pptUnregulated
PFHpA3.2 pptNo standardUnregulated

Water Quality Summary

Understanding Your Water in Thomaston

Tap water quality in Thomaston, Alabama (36783) receives an overall grade of A (Excellent) with a score of 85 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 15 points above the Alabama state average of 70. The area is served by 2 water systems providing water to approximately 5,376 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 2 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 85/100 A
vs State 15 pts above Alabama avg (70)
vs National 10 pts above national avg (75)

What a Grade A Means

A score of 85/100 means the water supply in Thomaston, AL meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

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.

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Thomaston, Alabama receives a grade of A (Excellent) with a score of 85/100. 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 36783 is served by 2 water systems using surface water, groundwater sources, providing water to approximately 5,376 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 5.0 ppb in Thomaston, Alabama. 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 — 7 PFAS compounds were detected in water serving Thomaston, Alabama, and 2 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 Thomaston, Alabama 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 Thomaston, Alabama 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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