Well Water in Lyon County: What to Test and Why

Groundwater in Lyon County contains arsenic, chloride, fluoride, iron, lead, manganese, and sulfate. Several of these contaminants exceed EPA health standards, with iron, manganese, and sulfate reaching very high levels that demand attention.

These contaminants come from the rock layers beneath the county. Iron and manganese naturally dissolve from the rock into groundwater when oxygen levels are low underground. Sulfate also occurs naturally in the local rock. Arsenic, chloride, and fluoride can come from both natural rock sources and from human activities like road salt use and past agricultural practices.

Groundwater in Lyon County is very hard and high in iron and sulfate, driven by calcium, magnesium, and dissolved minerals from the surrounding rock. The local rock naturally contains these minerals, and the way water moves through the ground allows them to dissolve into the water supply. These characteristics are widespread across the county's wells.

Wells in Lyon County show concerning levels of arsenic, chloride, fluoride, iron, lead, and manganese that exceed EPA health standards. Arsenic and lead are especially serious because they can build up in your body over time and cause cancer, heart problems, and developmental issues in children. Manganese at high levels can harm your brain and nervous system. Fluoride in excess amounts can damage bones and teeth, especially in children. These health risks grow the longer you drink contaminated water.

The extremely hard water in county wells causes real problems at home. You will see stubborn stains on fixtures and dishes, scale buildup inside pipes and water heaters, and a bitter or metallic taste in your water. The high mineral content can shorten the lifespan of water heaters, dishwashers, and other appliances. Your laundry and skin may feel sticky or dry even after washing.

We recommend getting your well tested right away since every well is different and your water could have higher or lower levels than what is common here. Testing is the only way to know exactly what is in your well so you can treat it properly. A comprehensive panel that checks for metals, minerals, and bacteria costs between $200 and $400. Treatment options like carbon filters, ion exchange systems, or reverse osmosis can remove many of these contaminants.