Well Water in Portage County: What to Test and Why

Moderate Risk
Testing Recommended 13817 samples analyzed
Top Concerns in This County
Iron Radon

Why This Happens Here

Groundwater in Portage County contains iron and radon at levels that exceed EPA health standards. These contaminants are present in amounts that warrant attention, though they are not extreme.

Iron and radon come from the local bedrock itself. As groundwater moves through the mixed rock layers beneath the county, it dissolves iron naturally present in the stone. Radon seeps into the water from the natural radioactive decay of uranium and other elements in the rock, a process that happens over time as water sits in contact with the bedrock.

Groundwater in this county is moderately hard, driven mainly by elevated iron. The mixed rock types here naturally release iron into the water as it flows through them, and this characteristic shows up across most wells in the county.

What This Means for You

Radon and iron are the two contaminants that exceed EPA health standards in Portage County wells. Radon is a radioactive gas that enters groundwater naturally and can increase your risk of lung cancer when you breathe it in during showers and other water use. Iron itself is not considered a health risk at the levels found in county wells, but it is monitored as a contaminant of concern.

Wells in this county show moderately hard water, which means you may notice white, crusty scale buildup on faucets and inside pipes over time. Iron staining can leave orange or brown marks on fixtures, laundry, and dishes. Hard water also reduces how well soap works and can shorten the lifespan of water heaters and dishwashers.

We recommend testing your well since every well is different and yours could have higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your water so it can be properly treated. A comprehensive metals and minerals panel typically costs between $200 and $400. Radon removal through aeration or iron removal filters are treatment options available once testing is complete.

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 11 50% 36% · 18% · 46% Low High
Radon 3 33% 33% · 33% · 33% Low High
Uranium 36 0% 100% · 0% · 0% Moderate Low
Arsenic 3 0% 100% · 0% · 0% Low Low
PFNA ⓘ municipal 10 0% 100% · 0% · 0% Low Safe
PFOS ⓘ municipal 10 0% 100% · 0% · 0% Low Safe
PFOA ⓘ municipal 10 0% 100% · 0% · 0% Low Safe
PFHxS ⓘ municipal 10 0% 100% · 0% · 0% Low Safe
HFPO-DA (GenX) ⓘ municipal 10 0% 100% · 0% · 0% Low Safe
Chloride 19 0% 100% · 0% · 0% Moderate Low
Sulfate 50 0% 100% · 0% · 0% Moderate Low
Fluoride 3 0% 100% · 0% · 0% Low Low
pH 17 Moderate Low
Sodium 49 Moderate Low
Manganese 1 0% 100% · 0% · 0% Low Safe
Nitrate 1 0% 100% · 0% · 0% Low Safe
Nitrite 1 0% 100% · 0% · 0% Low Safe
Lead 1 0% 100% · 0% · 0% Low Safe
Total Coliform 1 0% 100% · 0% · 0% Low Safe
E. coli 1 0% 100% · 0% · 0% Low Safe
Hardness 28 Moderate Low
Fecal Coliform 2 Low Safe
PFBS ⓘ municipal 10 100% · 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.

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Population Health Context

Population-level CDC data. Not individual risk prediction.

6.0%
Cancer Prevalence
(state avg: 7.0%)

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