Well Water in Somerset County: What to Test and Why

High Risk
Testing Strongly Recommended 44399 samples analyzed
Top Concerns in This County
Iron Radon Sulfate

Why This Happens Here

Groundwater in Somerset County contains iron, sulfate, and radon at levels that exceed EPA health standards. These contaminants are a serious concern and require attention.

The rock beneath Somerset County is ancient sandstone and shale filled with cracks and spaces where water sits for a long time. As water moves slowly through these layers, it picks up iron and sulfate from the rock itself. Radon gas seeps out of uranium that breaks down naturally within the stone. Chloride also accumulates in this water as it stays in contact with mineral deposits deep underground.

Groundwater in this county is soft but carries moderate iron and sulfate that shape its character. Iron and sulfate dissolve naturally from the rock layers as water moves through them over years. These mineral characteristics show up across wells throughout the county.

What This Means for You

Wells in Somerset County commonly contain chloride, iron, 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. Chloride at elevated levels can affect people managing high blood pressure or heart disease. Iron and sulfate themselves are not direct health threats at the levels found here, but radon deserves your attention.

The moderate iron in county wells stains sinks, toilets, and laundry with reddish-brown marks. You may notice a metallic taste in your water or occasional odors. The sulfate can cause digestive issues in some people. While the water in this county is relatively soft, the combination of iron and minerals still affects everyday use and can shorten the lifespan of water heaters and dishwashers.

We recommend testing your well water with a comprehensive metals and radon panel, since multiple contaminants exceed health standards in this county. Every well is different--yours may have higher or lower levels than what is common here. Testing is the only way to know what is actually in your water so you can treat it properly. A comprehensive panel typically costs $200-400, and treatment options like aeration systems combined with water softeners can address these concerns.

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
Iron 5 50% 60% · 0% · 40% Low High
Sulfate 131 35% 57% · 8% · 35% High High
Radon 13 25% 54% · 23% · 23% Low High
Chloride 96 1% 91% · 8% · 1% Moderate Low
PFOA ⓘ municipal 56 0% 98% · 2% · 0% Moderate Low
PFOS ⓘ municipal 56 0% 100% · 0% · 0% Moderate Safe
Uranium 6 0% 100% · 0% · 0% Low Low
PFHxS ⓘ municipal 44 0% 100% · 0% · 0% Moderate Safe
PFNA ⓘ municipal 44 0% 100% · 0% · 0% Moderate Safe
HFPO-DA (GenX) ⓘ municipal 44 0% 100% · 0% · 0% Moderate Safe
Nitrate 1 0% 100% · 0% · 0% Low Safe
Lead 1 0% 100% · 0% · 0% Low Safe
Fecal Coliform 1 0% 100% · 0% · 0% Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Hardness 34 Moderate Low
Sodium 94 Moderate Low
Fluoride 1 0% 100% · 0% · 0% Low Safe
Manganese 1 0% 100% · 0% · 0% Low Safe
Nitrite 1 0% 100% · 0% · 0% Low Safe
Arsenic 1 0% 100% · 0% · 0% Low Safe
PFBS ⓘ municipal 44 100% · 0% · 0% Moderate Safe
pH 20 Moderate Low

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.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

6.1%
Cancer Prevalence
(state avg: 7.0%)

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