Well Water in Hanover County: What to Test and Why

Groundwater in Hanover County contains manganese, iron, radon, chloride, and lead at levels that exceed EPA health standards. These contaminants are present in amounts that well owners need to address.

The Early Mesozoic basin rocks beneath Hanover County naturally contain iron and manganese minerals that dissolve into groundwater over time. Radon enters from radioactive decay within the bedrock itself. Chloride and sulfate can come from both natural mineral sources in the rock and from road salt or septic system influences in areas with more development.

Groundwater in this county is soft overall, but iron is the mineral that stands out, present at moderate levels that distinguish many wells here. Iron concentrates in the groundwater because the basin rocks contain iron-bearing minerals that slowly release iron as water moves through them. Iron is a common feature across wells throughout the county.

Wells in Hanover County have been found to exceed EPA health standards for chloride, iron, lead, manganese, radon, and sulfate. Lead exposure from drinking water harms children's brain development and can cause learning problems and developmental delays. Radon is a radioactive gas that increases lung cancer risk over time. Manganese at elevated levels can affect the nervous system and cause problems with movement and coordination. Chloride and sulfate at high concentrations can cause digestive issues and other health concerns.

Iron and manganese in county wells create visible staining on sinks, toilets, and laundry. Water may taste metallic or have an unpleasant odor from these minerals. While Hanover County's wells are generally soft, which is good for appliances, the iron present can still cause reddish or brownish discoloration that's frustrating to deal with daily.

We recommend testing your well water right away with a comprehensive panel since multiple analytes exceed health standards in this county. Every well is different--yours could have higher or lower levels than what we see countywide. Testing is the only way to know what is actually in your water so you can treat it properly. A comprehensive metals and minerals panel typically costs between $200 and $400 and will tell you exactly what you're dealing with. Treatment options like carbon filters, ion exchange, or aeration can address many of these concerns once you know your specific levels.