Well Water in Zapata County: What to Test and Why

Groundwater in Zapata County contains iron, manganese, and arsenic. Iron and manganese are present at levels that exceed EPA health standards and warrant your attention.

The rock beneath Zapata County naturally contains these metals. As water moves through the ground layers, it dissolves iron and manganese from the rock itself. Arsenic also occurs in the bedrock and leaches into the water supply as groundwater flows through it.

Groundwater in this county is notably high in iron. Iron dissolves from the surrounding rock as water passes through the ground, and this same geologic process brings up manganese and arsenic. These characteristics are widespread across wells throughout Zapata County.

Wells in Zapata County commonly contain iron and manganese at levels that exceed EPA health standards. Iron can harm your blood and organs over time. Manganese affects your nervous system and can impact brain development, especially in children. Arsenic is also a concern in county groundwater and poses serious health risks with long-term exposure.

Iron and manganese create visible staining on fixtures, laundry, and dishes. They can leave brown and black marks that are hard to remove. These minerals may also affect the taste and smell of your water. The mineral buildup can damage pipes and reduce water flow over time.

Testing your well is the only way to know what is actually in your water. Every well is different--yours could have higher or lower levels than what is common in the county. We recommend a comprehensive metals and minerals panel, which typically costs between two hundred and four hundred dollars. Water treatment options like reverse osmosis or specialized filtration systems can help remove these contaminants once you know your levels.