Groundwater in Cheboygan County contains iron and manganese that exceed EPA health standards. Iron and manganese are present at very high and elevated levels, respectively, making these the main contaminants well owners need to monitor.
Iron and manganese dissolve naturally from the rock layers beneath this area. As groundwater moves slowly through cracks in the bedrock, these metals seep into the water over time. The rock formations here naturally contain iron-bearing minerals that release these metals when in contact with water.
Groundwater in this county is hard, driven by elevated calcium and magnesium from the limestone below, and very high in iron. These minerals concentrate here because water moving through the rock layers picks them up and they accumulate over time. Hard water and elevated iron are common across wells in this county.
Wells in Cheboygan County commonly exceed EPA health standards for iron and manganese. Long-term exposure to elevated iron can affect your blood and organs over time. Manganese at these levels is a concern because exposure over many years has been linked to effects on the nervous system and brain function in adults. These metals dissolve naturally from the bedrock as groundwater sits in contact with rock layers.
Hard water is very common in this county, and it leaves white, crusty buildup on fixtures, faucets, and inside pipes. Iron causes orange or reddish-brown stains on sinks, toilets, and laundry. Your water may also taste metallic or have an unpleasant odor. Over time, the mineral buildup can shorten the lifespan of water heaters and dishwashers.
We recommend testing your well water, since 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 between $200 and $400. An iron filtration system paired with a water softener can address both the iron and hardness 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 ⓘ |
|---|---|---|---|---|---|
| Iron | 7 | 57% | Low | High ⓘ | |
| Manganese | 7 | 14% | Low | Moderate ⓘ | |
| Arsenic | 6 | 0% | Low | Low ⓘ | |
| Chloride | 6 | 0% | Low | Low ⓘ | |
| Fluoride | 6 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Lead | 7 | 0% | Low | Safe ⓘ | |
| Nitrite | 6 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 5 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Radon | 3 | 0% | Low | Low ⓘ | |
| Sulfate | 6 | 0% | Low | Low ⓘ | |
| Uranium | 5 | 0% | Low | Low ⓘ | |
| Nitrate | 6 | 0% | Low | Low ⓘ | |
| Sodium | 6 | — | Low | Low ⓘ | |
| pH | 10 | — | Low | Low | |
| PFBS ⓘ municipal | 2 | — | Low | Safe ⓘ | |
| Hardness | 6 | — | Low | 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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