A water pollution abatement plan (WPAP) is required for any construction project or other regulated activity proposed in the Edwards Aquifer recharge zone.
This includes any construction related activity within the recharge zone, such as the construction of buildings, utility stations, roads, highways, railroads, excavation, or any other activities that alter or disturb the topographic, geologic, or existing recharge characteristics of a site. It also includes any other activities which may potentially contaminate the Edwards Aquifer and hydrologically connected surface streams.
The forms for a complete WPAP can be obtain online through Texas Commission on Environmental Quality (TCEQ), which specify additional information that must be attached, such as maps, site plans, geologic assessment, construction notes and details, calculations for the removal of suspended solids, and the sizing for permanent best management practices. The fee associated with the WPAP range from a minimum of $650 to the maximum of $10,000 and is based on the project area in acres, and the type of development (one single-family dwelling; multiple single-family residential or parks; or nonresidential).
A WPAP is not required in the Edwards Aquifer recharge zone for existing sites, unless the sites are being modified, nor for projects in the Edwards Aquifer transition zone. A WPAP must be submitted for review and approved prior to the commencement of construction or other regulated activities.