Drain Doctor · Covina & SGV
Cured-in-place pipe lining to restore pipes without excavation.
Walnut dispatch. We serve Covina, Glendora, Pomona, Chino Hills, and communities across the San Gabriel Valley and nearby L.A. & San Bernardino Counties. Our service regions →
Current special — same value as our all offers page
Limited-time diagnostic visit
What you get from Drain Doctor:
Call for Conditions & Restrictions. *Some restrictions or conditions may apply, call for details. Offer may be subject to credit approval. Must present offer at time of service. Not available to combine with other offers/promotions.
Pipe lining (cured-in-place pipe, or CIPP) lets us restore damaged sewer and drain lines without digging up your yard. We insert a resin-coated liner into the existing pipe, cure it in place, and you get a new inner pipe that's durable and long-lasting. It's one of the most popular trenchless options for fixing broken or deteriorated lines.
How we help
Our team will first run a camera inspection to confirm the pipe is a good candidate for lining. We then clean the line, insert the liner, and cure it—often in a single day. The result is a seamless, jointless pipe that resists roots and corrosion.
Local experts
Same-day scheduling, clear estimates, and technicians who know the area. Start with our Covina plumber page, see where we dispatch, read why homeowners choose Drain Doctor, or request service.
Call (626) 332-9984 Why homeowners choose us
Drain Doctor uses quality materials and proven methods for every pipe lining job. We'll give you an honest assessment: when lining makes sense and when another option (like pipe bursting or replacement) is better. You get a clear written scope and a job done right.
California-licensed plumbers, fully insured for your peace of mind.
Same-day and after-hours dispatch when you need help fast.
We review scope with you before we start—no surprise add-ons.
Burst pipes, major leaks, or sewer backups? Don't wait. Our licensed plumbers are available day or night with the right tools to stop damage and fix the problem.
(626) 332-998424/7 Emergency Service · Same-day dispatch when you need it most
Dispatch & office
Drain Doctor Plumbing & Rooter
3820 Valley Blvd Unit OWhere we work
We’re your local plumbing company—not a referral site. Trucks roll from Walnut across the San Gabriel Valley and into nearby parts of Los Angeles and San Bernardino Counties. Each region below has its own page with neighborhoods we talk about most often.
Also serving
Don’t see your city? Contact us—we may still be able to help.
