Well Water in Allegheny County: What to Test and Why

Your well draws water from old coal-bearing sandstone and shale layers deep underground. These rocks formed hundreds of millions of years ago in ancient swamps. Water fills the tiny cracks and spaces between the rock layers, creating the underground reservoir that supplies your well.

Manganese and iron dissolve into the groundwater as it sits inside these coal-bearing rock layers. Low-oxygen conditions deep underground speed up this process. Sulfate appears because sulfur-containing minerals in the rock break down when water passes through them. Decades of coal mining have fractured these layers even more, allowing water to move faster and pick up more minerals.

The water here carries high levels of salt, sulfate, iron, and manganese. You will see orange or brown stains on sinks, toilets, and laundry. The water is also very hard, which means scale buildup on pipes and appliances. A whole-house treatment system with aeration and filtration can address these problems.

Your well water in Allegheny County exceeds EPA health standards for multiple contaminants including manganese, iron, radon, and sulfate. This is a serious situation that requires your attention. The combination of these contaminants at the levels found in your area's groundwater means your family's health and your home need protection now.

Long-term exposure to elevated manganese can harm your nervous system and affect children's learning and development. High iron will stain your sinks, toilets, and laundry orange-brown and create buildup in your pipes. The extreme hardness in your water causes heavy scale deposits on fixtures and reduces water pressure. Your water may also taste bitter or have a rotten-egg smell from sulfate.

Get a certified lab test immediately—a comprehensive mineral and metals panel from a state-certified lab costs $200–400 and will tell you exactly what is in your water. A whole-house treatment system with aeration and filtration can reduce these contaminants. Contact your county extension office or a water treatment professional today to discuss your options.