Well Water in Perry County: What to Test and Why

High Risk
Testing Strongly Recommended 22374 samples analyzed
Top Concerns in This County
Lead Radon Pfos

Why This Happens Here

Groundwater in Perry County contains lead, radon, and PFOS, along with iron, sulfate, and PFOA at levels that exceed EPA health standards. These contamination levels are concerning enough that well owners should test their water and consider treatment.

The limestone and carbonate rock beneath Perry County naturally releases radon gas and iron into groundwater as water moves through fractures and dissolves minerals from the stone. Lead enters through old metal pipes and fittings in some wells. Road salt applied to local highways contributes sulfate and other minerals to the water supply in areas near transportation corridors.

Groundwater in this county is moderately hard, driven by calcium and magnesium from the carbonate bedrock below. Iron concentrations are moderate, and sulfate levels are low. These mineral characteristics show up across many wells in the county, though individual wells vary in their specific water composition.

What This Means for You

Wells in Perry County commonly contain iron, lead, PFOA, PFOS, radon, and sulfate at levels exceeding EPA health standards. Radon is a radioactive gas that increases lung cancer risk with long-term exposure through inhalation. Lead damages children's brain development and affects kidney function. PFOA and PFOS are industrial chemicals linked to serious health effects including cancer, liver damage, and immune problems. Iron itself is not a direct health threat at elevated levels, but sulfate can cause digestive problems in some people.

The mineral content in county wells creates visible problems in your home. Iron causes orange-brown staining on sinks, toilets, and laundry. The moderately hard water leaves white crusty buildup on fixtures and inside pipes, which can shorten the lifespan of water heaters and dishwashers. Sulfate can give water a bitter taste.

We recommend testing your well for a comprehensive metals and radon panel because every well is different and yours may have higher or lower levels than what is common in the county. Testing is the only way to know exactly what is in your water so it can be treated properly. A comprehensive panel typically costs $200-400. Aeration systems combined with activated carbon filters can address multiple contaminants.

Not sure if your well is affected? Get certified results in 5–7 days.

Test Your Well Water with Tap Score →

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Lead 5 100% 20% · 0% · 80% Low High
Radon 14 50% 36% · 14% · 50% Low High
PFOS ⓘ municipal 146 21% 74% · 5% · 21% High High
Sulfate 63 10% 86% · 5% · 10% Moderate Moderate
PFOA ⓘ municipal 146 10% 77% · 13% · 10% High Moderate
Iron 26 8% 58% · 35% · 8% Moderate Moderate
Arsenic 2 0% 100% · 0% · 0% Low Low
Chloride 50 0% 100% · 0% · 0% Moderate Low
Fluoride 5 0% 100% · 0% · 0% Low Low
HFPO-DA (GenX) ⓘ municipal 128 0% 100% · 0% · 0% High Safe
Uranium 2 0% 100% · 0% · 0% Low Low
PFNA ⓘ municipal 6 0% 100% · 0% · 0% Low Safe
PFHxS ⓘ municipal 6 0% 100% · 0% · 0% Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Hardness 19 Moderate Low
pH 17 Moderate Low
PFBS ⓘ municipal 128 100% · 0% · 0% High Low
Sodium 68 Moderate Low
Manganese 1 0% 100% · 0% · 0% Low Safe
Total Coliform 1 0% 100% · 0% · 0% Low Safe
Nitrate 1 0% 100% · 0% · 0% Low Safe
Nitrite 1 0% 100% · 0% · 0% Low Safe
Fecal Coliform 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.

Data shows potential risk — a certified test confirms whether your water is affected.

Order a Tap Score Test →

Population Health Context

Population-level CDC data. Not individual risk prediction.

6.1%
Cancer Prevalence
(state avg: 7.0%)
7.9%
Heart Disease Rate
(state avg: 7.2%)

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