Well Water in Erie County: What to Test and Why

Groundwater in Erie County contains iron, manganese, and sulfate at levels that exceed EPA health standards. Chloride also exceeds standards, making this a serious multi-contaminant concern.

These metals and salts come from the rock layers beneath the county. Water sits in contact with these rock formations for years, slowly dissolving iron, manganese, and sulfate. The dense rock lets water move slowly through cracks, giving contaminants time to build up.

Groundwater in Erie County is very hard, driven by elevated calcium and magnesium from the limestone and related rock below. Iron and manganese add to the mineral load as water sits in the bedrock for long periods. These characteristics are widespread across wells in the county.

Wells in Erie County show chloride, iron, manganese, and sulfate at levels that exceed EPA health standards. Manganese can affect brain development and nervous system function over time. Chloride at high levels can aggravate blood pressure in people who are salt-sensitive. Sulfate exposure can affect digestion and cause stomach problems.

The water in this county is extremely hard, which means heavy white, crusty scale builds up on fixtures, in pipes, and inside appliances. Iron causes orange-brown staining on sinks, toilets, and laundry. The extreme hardness can shorten the lifespan of water heaters and dishwashers. You may also notice a bitter or metallic taste from the sulfate and sodium.

We recommend testing your well with a comprehensive panel to see what is actually in your water, since every well is different and yours may have higher or lower levels than what is common in the county. Testing is the only way to know what needs treatment. A comprehensive metals and minerals panel typically costs $200-400. A water softener combined with an iron filter can address several of these concerns.