Denver Water & Sewer Excavation
Water and sewer line repair, replacement, and new service installation — done by the owner, not a crew you've never met, and covered by a five-year transferable warranty.
Every repair and installation we perform is backed by a five-year transferable warranty. If you sell the property, the warranty transfers to the new owner — which makes our work a selling point on your inspection report, not a question mark. Most excavators warranty their work for one year, if at all. We put five in writing.
Every one of these is a Castillo dig in Colorado soil — water service, sewer construction, and the kind of clean, code-ready work we put our five-year warranty behind.
From the meter pit to the main, repairs to full new construction — permitted, inspected, and backfilled clean.
Leaking, frozen, or failed water services repaired or fully replaced in copper. Trenchless boring available to save your yard, driveway, and landscaping.
Complete new taps and service lines for new builds and remodels — meter pits, curb stops, and coordination with the water department included.
Spot repairs, partial replacements, and full sewer line replacements. Collapsed clay, root intrusion, bellies, and offsets — we've dug them all out.
New sewer laterals for new construction and additions, installed to grade and to code, with permits and inspections handled start to finish.
Camera inspection of your sewer line with a written, photo-documented report — ideal for home purchases and pre-sale peace of mind.
New septic tank installs, replacements, and service for properties off the city sewer — excavated, set, and connected to code.
Grease interceptors installed and tied in for restaurants and commercial kitchens, sized and permitted to meet local requirements.
Utility trenching, demolition support, and excavation for contractors and homeowners across the Denver metro.
A sewer scope inspection takes about an hour and can save you from a five-figure surprise after closing. You get a numbered written report with footage and findings — and if we end up doing the repairs, your re-inspection is free.
Castillo Excavating was founded by my grandfather more than fifty years ago. Today I run the company the same way he did: I write the estimate, I pull the permit, and I'm in the trench when the work happens.
No call centers, no rotating crews, no surprises on the invoice. When you hire Castillo, you get the owner's name on the proposal and the owner's hands on the work — which is exactly why we can put a five-year warranty behind it.
That work runs from single-family water services up to commercial site work — including sewer disconnects at Burnham Yard, the future Denver Broncos stadium site.
Reviews left on Google by people whose yards and streets we dug up.
Solid, honest, and family-owned! Six years ago, my sewer line backed up, and a widely advertised company quoted me $30,000 for the repair. Thankfully, I got a second opinion. Castillo Excavating completed the job for a small fraction of that cost—and years later, the repair is still holding strong.
Since then, they've also installed a drainage system at my commercial property, finally resolving a long-standing flooding problem. I can't recommend them enough for their integrity, fair pricing, and quality work!
We had a great experience with Castillo Excavating company. The crew was professional, hardworking, and did an excellent job from start to finish. They handled the excavation and grading efficiently, paid close attention to detail, and left the site looking clean and properly prepared.
Communication was great, the work was completed in a timely manner, and the finished grading exceeded our expectations. It's clear they take pride in the quality of their work. I would definitely recommend them to anyone looking for reliable, professional excavation and grading services!
Reviews are reproduced as written by the customer on our Google Business Profile.
Denver, Lakewood, Wheat Ridge, Arvada, Edgewater, Englewood, Aurora, Centennial, Thornton, Littleton, Commerce City, Westminster, and surrounding municipalities.
Golden, Morrison, Evergreen, Boulder, and Broomfield — including steep-grade and mountain-lot work.
We sub for general contractors, demolition outfits, plumbers, and builders who need utility excavation done on schedule.
Send your address and a quick description of the problem — standing water, sewer backup, a failed scope on a home you're buying — and we'll get back to you with a written proposal. No pressure, no padding.