Well Water in Iosco County: What to Test and Why

Iosco County's groundwater comes from the Marshall aquifer, a layer of old sandstone buried deep underground. This rock formed from sand that hardened over millions of years. Water fills the tiny spaces between the sand grains and flows slowly through the rock.

The contaminants in this water come from the rock itself. Arsenic, iron, and sulfate occur naturally inside the sandstone and dissolve into the groundwater as it passes through. The high sodium and chloride levels come from salty mineral layers deep below that mix with fresh groundwater moving downward.

The water here is very hard and loaded with minerals. You will see reddish-brown iron stains on sinks and laundry. The high sodium gives the water a salty taste, and the sulfate can cause a rotten-egg smell and upset digestion.

Arsenic is found at levels that exceed EPA health standards in Iosco County well water. This naturally occurring element comes from the rock layers deep underground where your well draws water. Testing your well is important to know if your family is exposed.

Long-term arsenic exposure can harm your kidneys and increase cancer risk over many years. Beyond health, your water shows very high iron, sodium, and sulfate levels. Iron will stain your sinks, toilets, and laundry orange or brown. The high sodium and sulfate give the water a salty taste and can cause digestive issues.

Get your well tested by a state-certified lab. A basic health screen for bacteria and nitrate runs fifty to one hundred dollars, while a comprehensive metals panel runs two hundred to four hundred dollars. A reverse osmosis system at your kitchen sink can remove arsenic and other contaminants.