Groundwater in Ionia County contains iron, manganese, sulfate, chloride, and nitrate at levels that exceed EPA health standards. These contaminant levels are serious and warrant testing and treatment.
Iron and manganese dissolve naturally from the mixed rock layers beneath the county as groundwater sits in contact with these minerals over time. The low-oxygen conditions deep underground speed up this process. Chloride and nitrate come partly from road salt and agricultural activity in the area, while sulfate dissolves from minerals in the bedrock.
Groundwater in this county is very hard, driven by elevated calcium and magnesium from the limestone and other mineral-rich rock below. Iron at very high levels is the most notable characteristic. These mineral traits are common across wells throughout Ionia County.
Wells in Ionia County commonly exceed EPA health standards for chloride, iron, manganese, nitrate, and sulfate. Chloride and nitrate at elevated levels can harm kidney function and affect how the body processes oxygen, particularly in infants and people with certain health conditions. Iron and manganese can build up in the body over time and damage the nervous system. Sulfate at high levels may cause digestive problems including diarrhea, especially in children and people new to the water.
The mineral content in county wells creates visible, everyday problems. Iron stains sinks, toilets, and laundry orange or brown. Sulfate gives water a bitter or rotten-egg taste and odor. The water is extremely hard, meaning mineral scale builds up quickly inside pipes, water heaters, and dishwashers--this buildup can shorten the lifespan of these appliances and reduce water flow over time.
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. Since multiple contaminants exceed standards here, a comprehensive metals and minerals panel is recommended, which typically costs $200-400. Treatment options like iron removal systems or whole-house water softeners can help 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 | 22 | 77% | Moderate | High | |
| Manganese | 15 | 47% | Moderate | High | |
| Sulfate | 27 | 19% | Moderate | High | |
| Chloride | 27 | 7% | Moderate | Moderate | |
| Nitrate | 17 | 6% | Moderate | Moderate | |
| PFNA ⓘ municipal | 24 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 24 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 22 | 0% | Moderate | Safe | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Arsenic | 15 | 0% | Moderate | Low | |
| Fluoride | 15 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 22 | 0% | Moderate | Safe | |
| Lead | 2 | 0% | Low | Safe ⓘ | |
| Nitrite | 5 | 0% | Low | Safe ⓘ | |
| PFHxS ⓘ municipal | 22 | 0% | Moderate | Safe | |
| Sodium | 15 | — | Moderate | Low | |
| pH | 29 | — | Moderate | Low | |
| PFBS ⓘ municipal | 22 | — | Moderate | Safe | |
| Hardness | 27 | — | 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.
* 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.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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