Contact
Get in Touch
Whether you need routine service or have an urgent issue, we're here to help. Schedule your service today or call us for immediate assistance.
Hours
- Monday–Friday: 8:00 AM – 5:00 PM
- Saturday: 8:00 AM – 12:00 PM
- Sunday: Closed
You can count on
Covina & the Valley's Plumbing & drain Experts.
Your local plumbing & drain team—call or book, we’ll take it from here.
Residential, commercial, and 24/7 emergency plumbing—serving the San Gabriel Valley since 1996. Licensed plumbing & drain services, clear estimates, our own equipment. Same-day drain cleaning & hydro jetting when you need it.
Walnut dispatch. We roll trucks to Covina, Glendora, Pomona, Chino Hills, and dozens of communities across L.A. & San Bernardino Counties. See our five service regions →
1996 Serving the Valley
24/7 Emergency Service
#803591 CA Licensed
Same Day When You Need Us
Plumbing services
Expert plumbing, drains & sewer
With licensed technicians and clear communication, Drain Doctor customers get what every homeowner wants: straight answers and work done right.
Plumbing
Expert repair and installation of fixtures, water heaters, gas lines, and more. Quality work that lasts.
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Drains & Sewer
Fast, effective drain clearing and sewer line services. Advanced hydro-jetting and rooter service.
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Water Heater
Reliable water heater repair, replacement, and installation. Tank and tankless—same-day and emergency service available.
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Trenchless & Pipe
Pipe lining, pipe bursting, and pipe descaling. Restore or replace lines with minimal disruption to your property.
Learn More Local expertise, professional standards
Trusted in the Valley—here for your home, too
You get the best of both worlds: a local Covina-area team that knows your neighborhood, with the equipment and training to handle everything from emergency drain cleaning to full repiping and trenchless sewer repair.
- Licensed, insured & background-checked techs
- Our own equipment—no rental markups
- Written scope reviewed before work begins
Our promise
Why Choose Drain Doctor
Our values guide every job we take on.
Strength Where It Counts
Systems built to perform under pressure, delivering reliable service when you need it most.
Quality Without Compromise
Every job done right the first time, with meticulous attention to detail and craftsmanship.
Trusted in the San Gabriel Valley
Decades of service across homes and businesses in Covina and surrounding areas have built our reputation.
Respect Always
Respect for customers, their spaces, and their time is at the heart of everything we do.
Clear communication
Straightforward explanations and honest options you can trust.
Responsive Support, Always On
We are here when you need us most—prompt communication and dependable support from first call to final follow-through.
Dispatch & office
Our Walnut headquarters
Drain Doctor Plumbing & Rooter
3820 Valley Blvd Unit OWalnut, CA 91789
Where we work
Service regions
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.
- West & Central San Gabriel Valley Covina · West Covina · Valinda · La Puente · Industry · Irwindale · South El Monte · North El Monte
- North Foothill Communities Azusa · Glendora · Monrovia
- Eastern Foothills San Dimas · La Verne · Claremont
- Walnut, Diamond Bar & Rowland Heights Walnut · Diamond Bar · Rowland Heights · Hacienda Heights · Avocado Heights
- Pomona Valley & Chino Pomona · Montclair · Chino · Chino Hills
Also serving
Don’t see your city? Contact us—we may still be able to help.
24/7 emergency response
Emergency plumbing—We're prepared, anytime
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
Call anytime (626) 332-9984