Well Water in Auglaize County: What to Test and Why

Groundwater in Auglaize County contains iron, manganese, and arsenic as the top contaminants of concern. These three metals exceed EPA health standards, making testing and treatment important for well owners in this area.

Iron and manganese come naturally from the bedrock below--specifically from the rock layers that contain these metals locked in their mineral structure. As groundwater sits in contact with these rocks over time, the metals dissolve into the water. Arsenic behaves the same way, dissolving out of certain minerals as water moves slowly through cracks and fractures in the stone. Sulfate also builds up through the same process, accumulating as water sits in contact with mineral-rich rock.

Groundwater in this county is very hard, driven by elevated calcium and magnesium from the limestone and dolomite below, and it also carries high iron and moderate sulfate. This hardness and elevated iron concentration reflect the mineral-rich character of the bedrock that supplies your water. These characteristics are widespread across wells throughout Auglaize County.

Wells in Auglaize County commonly contain arsenic, iron, manganese, and sulfate at levels exceeding EPA health standards. Arsenic is a serious concern because long-term exposure can increase the risk of cancer and damage organs. Iron and manganese at elevated levels can affect brain development in children and cause other health problems over time. Sulfate at high concentrations can cause digestive issues, especially in infants and people with certain health conditions.

The water in this county is extremely hard, which means you will see thick white crusty buildup on faucets, fixtures, and inside pipes. Iron stains sinks, toilets, and laundry orange or rust-colored. The high sulfate can give water a bitter or unpleasant taste and odor. Over time, this extreme hardness can shorten the lifespan of water heaters, dishwashers, and other appliances.

We recommend testing your well as soon as possible because every well is different and your water 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 well so it can be properly treated. Since multiple contaminants exceed health standards, a comprehensive metals and minerals panel is recommended, which typically costs $200-400. Treatment options include a water softener paired with an arsenic-removal system or whole-house filtration.