Well Water in Perquimans County: What to Test and Why

Groundwater in Perquimans County contains arsenic, iron, chloride, and sulfate at levels that exceed EPA health standards. These contaminants are present at concentrations serious enough that well owners should test their water and consider treatment options.

The Northern Atlantic Coastal Plain aquifer system here sits atop and within layers of sand, clay, and shell deposits left behind by ancient oceans. Arsenic, iron, and chloride occur naturally in these coastal sediments and can dissolve into groundwater as it moves slowly through the rock. Saltwater from the Atlantic Ocean also pushes inland underground in this low-lying area, bringing chloride into wells closer to the coast.

Groundwater in this county is hard, driven by elevated iron and calcium from the sandy and clay-rich layers underground. The minerals dissolve from the sediment as water sits in the aquifer for years. Hard water with high iron is the typical pattern across wells in this county.

Wells in Perquimans County sometimes contain arsenic, chloride, iron, and sulfate at levels that exceed EPA health standards. Arsenic is the main concern because it can cause health problems over time, including skin changes, nerve damage, and increased cancer risk. Iron and chloride at high levels can also affect health, though the effects depend on how much is in the water and how long someone drinks it. Sulfate can cause digestive issues in some people, especially children and infants.

The minerals in county wells create everyday problems around the house. Hard water from iron and other minerals leaves stains on sinks, tubs, and clothes that are hard to clean. Scale builds up inside pipes and appliances like water heaters and dishwashers, which can shorten how long they last. You might notice a metallic taste or smell in the water, or see rust-colored staining from iron.

We recommend testing your well to find out what is actually in your water, since every well is different and yours could have higher or lower levels than what is common in the county. A comprehensive panel that checks for metals and minerals costs between two hundred and four hundred dollars and is the only way to know what needs treating. Testing will show you exactly what is there so you can decide on the right treatment, whether that is an arsenic removal filter, iron filter, or other options.