Well Water in Portage County: What to Test and Why

Moderate Risk
Testing Recommended 993 well tests on record
Top Concerns in This County
Iron Manganese Nitrate

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.

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Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Radon 3 33%
Low High
Iron 599 27%
High High
Manganese 407 26%
High High
Nitrate 915 22%
High High
PFOA ⓘ municipal 17 6%
Moderate Moderate
PFOS ⓘ municipal 17 6%
Moderate Moderate
Arsenic 160 1%
High Low
Nitrite 871 0%
High Low
Chloride 761 0%
High Low
Fluoride 408 0%
High Low
HFPO-DA (GenX) ⓘ municipal 17 0%
Moderate Safe
Lead 159 0%
High Low
PFHxS ⓘ municipal 17 0%
Moderate Low
PFNA ⓘ municipal 17 0%
Moderate Low
Sulfate 458 0%
High Low
Uranium 67 0%
Moderate Low
Hardness 475
High Low
PFBS ⓘ municipal 17
Moderate Low
pH 932
High Low
Sodium 731
High 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.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.

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%)
2.5%
Kidney Disease Rate
(state avg: 2.9%)

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