Well Water in Northampton County: What to Test and Why

Chloride, manganese, sulfate, and lead are the main contaminants in Northampton County groundwater that well owners should monitor. Several of these exceed EPA health standards, so testing your well is important to know what you are dealing with.

These contaminants come from a mix of sources. Saltwater from the ocean pushes inland through the sandy and clay layers that make up this coastal plain, bringing chloride and sulfate deeper into the ground. Manganese and iron occur naturally in the rock and sediment here. Lead enters from old pipes and plumbing in some wells. Radon, a radioactive gas, comes from the rock itself.

Groundwater in this county is moderately hard, driven by moderate levels of sodium and manganese, with some iron present as well. The sandy and clay geology of the coastal plain allows water to pick up these minerals as it moves through the ground. These characteristics show up in wells across the county, though individual wells vary in their exact mineral content.

Wells in Northampton County commonly contain chloride, sulfate, manganese, lead, and radon at levels above EPA health standards. Lead can damage the brain and nervous system, especially in children, and cause learning and behavior problems. Manganese affects the nervous system and can cause movement difficulties and cognitive issues. Radon is a radioactive gas that increases lung cancer risk when inhaled over time. Chloride and sulfate at high levels can affect kidney function and cause digestive problems in sensitive people.

The water in this county tends to be moderately hard, which means you may see white scale buildup on faucets and shower heads, staining on fixtures, and reduced soap effectiveness. Iron in the water can leave reddish or brown stains on laundry, dishes, and bathroom surfaces. Hard water also shortens the lifespan of water heaters and dishwashers by coating their internal parts with mineral deposits. You might notice a slightly salty or mineral taste in your drinking water.

We recommend testing your well water with a comprehensive panel that covers metals, minerals, bacteria, and radioactive elements. Every well is different, and your water could have higher or lower levels than what is common in the county. Testing is the only way to know exactly what is in your well so you can treat it properly. A comprehensive panel typically costs between $200 and $400. Treatment options like point-of-use filters, water softeners, and radon removal systems can address many of these concerns once you know your specific results.