Groundwater in Portage County contains manganese, iron, chloride, and sulfate at levels that exceed EPA health standards. These contaminants are present at concerning severity in your county's wells.
The rock beneath Portage County naturally releases manganese and iron as groundwater sits in contact with it over time. Chloride enters the water from road salt applied during winter, and sulfate comes from minerals breaking down in the bedrock. These are not contaminants from human activity alone--they are partly a product of the local geology.
Groundwater in this county is very hard, driven by elevated calcium and magnesium concentrated in the water as it moves through the rock layers below. The Mississippian bedrock here naturally dissolves these minerals, and the characteristics are widespread across wells throughout the county.
Portage County wells commonly show sulfate, chloride, manganese, and iron at levels that exceed EPA health standards. Manganese exposure over time can affect brain development and nervous system function. Iron at these concentrations does not pose a direct health risk, but sulfate and chloride at elevated levels are concerns for long-term drinking water quality.
Wells in this county are extremely hard, and the high iron content will cause orange and reddish-brown staining on sinks, toilets, and laundry. Scale buildup from the hardness can shorten the lifespan of water heaters and dishwashers. The elevated sodium and sulfate may affect taste, and some people notice a slightly salty or bitter flavor.
We recommend testing your well 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 what is actually in your water so it can be properly treated. A comprehensive metals and minerals panel typically costs $200-400 and will tell you exactly what you're dealing with. A water softener combined with an iron filter can address most of these concerns.
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 ⓘ |
|---|---|---|---|---|---|
| Manganese | 2 | 100% | 50% · 0% · 50% | Low | High ⓘ |
| Iron | 84 | 54% | 33% · 13% · 54% | Moderate | High |
| Chloride | 114 | 25% | 67% · 9% · 25% | High | High |
| Sulfate | 59 | 17% | 71% · 12% · 17% | Moderate | High |
| Fluoride | 22 | 0% | 100% · 0% · 0% | Moderate | Low |
| PFOA ⓘ municipal | 18 | 0% | 100% · 0% · 0% | Moderate | Safe |
| PFOS ⓘ municipal | 18 | 0% | 100% · 0% · 0% | Moderate | Safe |
| PFHxS ⓘ municipal | 18 | 0% | 100% · 0% · 0% | Moderate | Safe |
| PFNA ⓘ municipal | 18 | 0% | 100% · 0% · 0% | Moderate | Safe |
| HFPO-DA (GenX) ⓘ municipal | 18 | 0% | 100% · 0% · 0% | Moderate | Safe |
| Arsenic | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| Lead | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| Nitrate | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| Nitrite | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| pH | 12 | — | — | Low | Low |
| E. coli | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| PFBS ⓘ municipal | 18 | — | 100% · 0% · 0% | Moderate | Safe |
| Hardness | 38 | — | — | Moderate | Low |
| Fecal Coliform | 1 | 0% | 100% · 0% · 0% | Low | Safe ⓘ |
| Sodium | 87 | — | — | 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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