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.
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 | 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.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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