Well Water in Washington County: What to Test and Why

Moderate Risk
Testing Recommended 43562 samples analyzed
Top Concerns in This County
Iron Sulfate Radon

Why This Happens Here

Your well water comes from old rock layers buried deep underground that formed from ancient sediment and coal beds. These layers trap water in tiny spaces between the grains of rock. They stretch across the region under Washington County and neighboring areas.

The rock here naturally protects the water from contamination. The dense, fine-grained stone slows down water movement through the ground. This slow journey filters out many pollutants before they reach the groundwater. The deeper layers where most wells draw water are far below sources of surface pollution.

The mineral content of your water depends on what rock surrounds your well. Hard water is common in this region because the rock dissolves minerals into the groundwater as water seeps slowly through it. You may notice scale buildup in pipes or reduced soap performance with harder water. A simple test tells you exactly what minerals your water contains and whether treatment would help.

What This Means for You

Your well water in Washington County has no detected contaminants that exceed EPA health standards. The water quality data shows your area does not have the serious contamination issues found in some neighboring counties. Your water appears clean based on available county information.

Since no contaminants are detected at concerning levels, you should not experience health effects or water quality problems like staining, scaling, or bad taste and odor from the minerals tested. This is good news for your family's health.

Get your well tested by a state-certified lab to confirm the county data applies to your specific well. A basic health screen for bacteria and nitrate costs fifty to one hundred dollars. A comprehensive mineral and metals panel runs two hundred to four hundred dollars and gives you complete peace of mind about what comes from your tap.

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Iron 54 66% 22% · 13% · 65% Moderate High
Sulfate 87 31% 59% · 10% · 31% Moderate High
Chloride 64 10% 80% · 11% · 9% Moderate Moderate
Lead 35 9% 80% · 11% · 9% Moderate Moderate
Arsenic 2 0% 100% · 0% · 0% Low Moderate
Uranium 5 0% 100% · 0% · 0% Low Low
Radon 2 0% 50% · 50% · 0% Low Moderate
Sodium 83 Moderate Low
Nitrate 1 0% 100% · 0% · 0% Low Safe
pH 16 Moderate Low
Fluoride 1 0% 100% · 0% · 0% Low Safe
Manganese 1 0% 100% · 0% · 0% Low Safe
Hardness 7 Low Low
Fecal Coliform 1 Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Nitrite 1 0% 100% · 0% · 0% Low Safe

MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.

Population Health Context

Population-level CDC data. Not individual risk prediction.

7.6%
Heart Disease Rate

Water News for Washington County

Loading recent water news…

Local Resources

Nearby Counties