Groundwater in Montcalm County contains iron, manganese, sulfate, and chloride. These contaminants exceed EPA health standards, making them a concern that requires attention.
These minerals come from the rock layers beneath the county. As groundwater moves slowly through the underground rock and sediment, it dissolves iron and manganese naturally. Sulfate and chloride also leach from minerals in the bedrock over time.
Groundwater in this county is very hard, driven by elevated iron, manganese, and sulfate. The "other rocks" type aquifer here readily releases these minerals into water that sits in contact with it for extended periods. These characteristics show up across most wells in the county.
Wells in Montcalm County commonly contain chloride, iron, manganese, and sulfate at levels that exceed EPA health standards. Chloride at elevated levels is a concern for people managing sodium intake, particularly those with high blood pressure or heart conditions. Iron and manganese can cause health problems with long-term exposure--manganese may affect your nervous system, and iron buildup in your body can cause organ damage. Sulfate in drinking water can cause digestive problems, especially in children and people with weakened immune systems.
Wells in this county are very hard, which means mineral buildup will happen inside your pipes, water heaters, and appliances. Iron causes orange or brown staining on sinks, toilets, and laundry. Manganese creates black or brown stains. Sulfate can give your water a bitter or rotten-egg taste. These mineral levels can shorten the lifespan of water heaters and dishwashers due to scale accumulation.
We recommend testing your well water through a state-certified lab 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. Since multiple analytes exceed standards here, a comprehensive metals and minerals panel typically costs $200-400. Treatment options like iron removal systems and water softeners can address 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 ⓘ |
|---|---|---|---|---|---|
| Iron | 11 | 55% | Low | High | |
| Sulfate | 11 | 27% | Low | High | |
| Manganese | 11 | 27% | Low | High | |
| Chloride | 11 | 9% | Low | Moderate | |
| Arsenic | 11 | 0% | Low | Low | |
| Fluoride | 11 | 0% | Low | Low | |
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Lead | 1 | 0% | Low | Safe ⓘ | |
| Nitrite | 1 | 0% | Low | Safe ⓘ | |
| PFHxS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Nitrate | 1 | 0% | Low | Low ⓘ | |
| Hardness | 11 | — | Low | Low | |
| PFBS ⓘ municipal | 4 | — | Low | Low ⓘ | |
| pH | 11 | — | Low | Low | |
| Sodium | 11 | — | 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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