Well Water in Allegan County: What to Test and Why

Your well water comes from the Marshall aquifer, which is a layer of sandstone and other rock buried deep underground. This rock has small spaces between its grains where water fills in and sits. Wells in your county drill down into this sandstone layer to reach the water supply.

The three main contaminants in your water—iron, manganese, and arsenic—come from the rock itself. These metals dissolve naturally as groundwater sits in contact with the sandstone and surrounding layers over many years. Deep underground where oxygen is low, chemical reactions free these metals from the rock and they end up in the water you pump out.

Your water is very hard and salty. The hardness will leave white buildup on your faucets and inside pipes and appliances. The high sodium and sulfate levels mean the water tastes salty or bitter. These minerals create serious day-to-day problems—scale buildup clogs showerheads, spots form on dishes, and your pipes corrode faster than normal. Test your well and talk to a water treatment professional about filtration or softening systems.

Arsenic exceeds EPA health standards in Allegan County well water. This is a serious problem that needs your immediate attention. Iron and manganese also exceed EPA limits in area wells. You cannot see, taste, or smell arsenic, so testing is the only way to know if your well is affected.

Long-term exposure to arsenic can cause cancer, heart disease, and skin problems. Iron and manganese at high levels stain sinks and fixtures, make water taste metallic, and damage pipes and appliances. The very high sodium and sulfate in your area's water add a salty or bitter taste. Scaling and mineral buildup will reduce water pressure over time.

Get your well tested by a state-certified lab right away. A comprehensive mineral and metals panel costs between $200 and $400 and will show exactly what is in your water. If arsenic is present, a treatment system using reverse osmosis or activated carbon can remove it.