Well Water in Lake County: What to Test and Why

Groundwater in Lake County contains lead, manganese, and iron that well owners should be aware of. These contaminants exceed EPA health standards, making testing and potential treatment important for your household.

These metals come naturally from the rock layers beneath the county. As groundwater sits underground and moves slowly through mixed rock types, iron and manganese dissolve out and accumulate in the water. Lead can also enter from pipes and plumbing materials in older systems.

Groundwater in this county is notable for moderate iron content, which comes from the naturally iron-bearing rock below. Iron concentrates in the water as it sits in contact with these rock layers over time. Most wells in Lake County show elevated iron, making this characteristic common across the area.

Wells in Lake County commonly contain chloride, iron, lead, manganese, and sulfate at levels that exceed EPA health standards. Long-term exposure to elevated lead poses serious risks to children's brain development and can harm kidney function and blood pressure in adults. Manganese exposure over time can affect your nervous system and brain function. Chloride and sulfate at elevated levels can raise blood pressure and cause digestive issues in vulnerable people. Iron itself is not poisonous at these levels, but it indicates other contaminants may be present in your groundwater.

Iron in county wells causes orange-brown or reddish staining on sinks, toilets, and laundry. You may notice a metallic or unpleasant taste in your water. The moderate iron levels found here can clog pipes and shorten the lifespan of water heaters and dishwashers over time. These aesthetic issues affect daily life even if health risks vary from well to well.

We recommend testing your well water through a state-certified lab. Every well is different, and your well may have higher or lower levels than what is common in the county. Because multiple analytes exceed standards here, a comprehensive metals and minerals panel is recommended--typically costing $200-400. Testing is the only way to know what is actually in your well so it can be properly treated. Iron filters or water softeners can help remove these contaminants from your water.