Well Water in Eaton County: What to Test and Why

Groundwater in Eaton County contains iron, lead, and sulfate at levels that exceed EPA health standards. These contaminant levels are concerning and warrant immediate testing of your well.

Iron, lead, and sulfate dissolve naturally from the mixed rock layers beneath this county. The rock types here--a patchwork of sandstone, shale, and other minerals--release these metals and compounds into water as it sits underground. Lead can also enter from older well pipes or plumbing fixtures.

Groundwater in this county is very high in iron, which drives its character. Iron dissolves from minerals in the bedrock as water sits in contact with rock over time. Most wells across Eaton County show elevated iron and these other contaminants.

Wells in Eaton County commonly contain chloride, iron, lead, and sulfate at levels that exceed EPA health standards. Chloride at elevated levels can harm people's kidneys and heart over time, especially those with high blood pressure. Lead is especially dangerous for children and can damage the brain and nervous system. Iron and sulfate themselves do not pose direct health risks at the levels found here, but they indicate the mineral character of the groundwater.

The high iron levels in county wells cause orange or brown staining on sinks, toilets, and laundry. Sulfate at elevated concentrations gives water a bitter or rotten-egg taste and smell. These minerals also build up as hard scale inside pipes and water heaters, and extremely hard water can shorten the lifespan of appliances like dishwashers and water heaters.

We recommend testing your well through a state-certified lab right away. Every well is different, and your well 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 can identify all four contaminants. Iron removal systems and reverse osmosis filters are common treatment options for multiple contaminants.