Water Wells & Groundwater
Groundwater in Coryell County Falls Under State Management Area 8
Coryell County sits in Groundwater Management Area 8, which covers the Trinity aquifer system that many rural properties depend on for well water.
Most rural homes in Coryell County get their water from private wells. The county is part of Groundwater Management Area 8 (GMA 8). That is a zone set by the state that covers 40 counties in central Texas. The main underground water source here is the Trinity aquifer system, which includes the Edwards-Trinity formation.
Some properties sit inside a groundwater conservation district (GCD). A GCD is a local agency that oversees well drilling. If your land is in a GCD, you may need a permit before drilling a new well. If your land is outside any GCD, state rule-of-capture rules apply. That means fewer local rules, but also less protection for your water supply.
To find out if a GCD covers your property, use the Texas Alliance of Groundwater Districts map tool or contact the Texas Water Development Board. Links to both are in the sources below.
Source to confirm: TWDB — Groundwater Management Area 8