Drilling Drain Wells
Jason Damm • September 1, 2025

Drain Well Drilling Services in Central California

Large Diameter Drilling Job
In this project, our crew drilled a vertical drain well as part of a custom drainage system in Coalinga, California. Drain wells — sometimes called seepage pits or dry wells — are deep boreholes designed to manage stormwater runoff or septic outflow in areas where space or soil conditions limit the use of traditional leach fields.
Big Bore Drilling offers licensed drain well drilling throughout Fresno, Madera, Kings, and San Joaquin Counties. We use large-diameter drilling methods and Vac-Con support when needed to ensure code-compliant, long-lasting drainage solutions.


Big Bore Drilling's state-of-the-art septic pump truck
By Jason Damm September 1, 2025
Our custom septic pump truck won Classy Truck of the Year from Pumper Magazine in 2017. Built for performance and pride. See the video and specs.
Engineered Leach line being backfilled with rock
By Jason Damm September 1, 2025
Explore residential and commercial engineered leach line installations by Big Bore Drilling in Fresno and Clovis. Designed for hardpan soil and built to last.
Vac-Con truck prepared for high-volume hydro jetting of municipal sewer lines in Central California
By Jason Damm September 1, 2025
Big Bore Drilling provides high-volume hydro jetting and Vac-Con cleaning for sewer lines and storm drains ranging from 8 to 84 inches throughout Fresno & Madera Counites.