Well Water in Essex County: What to Test and Why

Groundwater in Essex County contains chloride, radon, iron, arsenic, and manganese. Several of these contaminants exceed EPA health standards and deserve attention from well owners.

These contaminants come from natural sources in the limestone bedrock beneath the county. Radon and arsenic occur naturally in the rock and dissolve into water as it moves slowly underground. Chloride can enter from road salt applied during winter, which seeps down and mixes with groundwater. Iron comes from minerals in the limestone itself.

Groundwater in Essex County is soft, with elevated sodium as the main mineral character. The carbonate limestone supplies the water with sodium as it dissolves slowly over time. Most wells in the county show this pattern of soft water with moderate sodium levels.

Wells in Essex County contain radon, arsenic, iron, manganese, and chloride at levels that exceed EPA health standards. Radon is a radioactive gas that can increase lung cancer risk when you breathe it over many years. Arsenic and manganese can harm your organs and nervous system with long-term exposure. Iron and chloride at elevated levels can affect your kidneys and overall health.

County well water is soft, so you won't see heavy scale buildup or need softening treatment. However, some wells show elevated iron, which can leave rust-colored stains on laundry and fixtures or give water a metallic taste. Chloride at moderate levels may add a salty flavor to your water.

We recommend testing your well with a comprehensive metals and radon panel, since multiple contaminants exceed health standards in this county. Every well is different, and your water could have higher or lower levels than what's common here. Testing is the only way to know what's actually in your well so you can treat it properly. Radon aeration systems and iron filters are two treatment options that work well together.