Tell us about your site and we’ll get back to you, usually the same day.

Trevor Mohney Excavating is a locally owned outfit based in Washington, PA, and septic work is our bread and butter. We install, repair and replace septic systems for homes and businesses across Washington County and the greater Pittsburgh area, and we treat every property like it’s our own. No runaround, no surprise add-ons, just dependable work and a fair price.
Because we run our own excavation equipment, we handle the whole job start to finish, from digging the hole and setting the tank to laying the drain field and grading it back smooth. When you call, you talk to the person doing the work.

A septic system is one of those things you don’t think about until it goes wrong, and a bad install or a cut corner can mean a backed-up yard and a big bill down the road. We take the time to size it right, set it level, and lay the drain field properly, so it just works for years.
Running our own excavation equipment means we handle the whole job ourselves, from the dig to the final grade, keeping your project on schedule, on budget, and out of trouble underground.
Most of what we do is septic, from brand-new installs to repairs, replacements and drain fields. And because we run our own excavation equipment, we handle all the digging, line work and grading that goes with it.
There’s no shortage of equipment for hire in Washington County, but plenty of folks get burned by no-shows and surprise bills. We built our reputation on doing the opposite, and most of our work comes from neighbors telling neighbors.
Family-owned and based in Washington, PA. We live where we work and stand behind it.
Years of hands-on dirt work and our own equipment mean fewer surprises and faster jobs.
Clear, up-front quotes and a fair price. The number we give you is the number you pay.
Backed-up septic or an emergency dig? We answer day or night to keep things moving.

Whether it’s a brand-new system, a failing drain field, or a backup that needs attention today, tell us what’s going on and we’ll come take a look, free of charge.
EXCELLENT Based on 5 reviews Posted on Google Michael Ognar-PetterssonTrustindex verifies that the original source of the review is Google. Trevor is very experienced and great to work with!Posted on Google Tyler TroianoTrustindex verifies that the original source of the review is Google. He’s the bestPosted on Google Brian GardnerTrustindex verifies that the original source of the review is Google. Highly Recommend using Trevor for your excavating needs. Trevor shows up as scheduled, cautious of his surrounding and treated everyone on the job site with respect.Posted on Google Chris ElliottTrustindex verifies that the original source of the review is Google. Best in the business!