Licensed plumber · Covina & SGV

Plumber in Covina — plumbing services

Repairs, replacements, and installations from a local crew—not a referral network. Clear estimates and code-compliant work.

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 →

Call (626) 332-9984

Drain Doctor plumbing professional on a service call in the San Gabriel Valley

Drain Doctor plumbing service in the field

1996 Serving the Valley

24/7 Emergency Service

#803591 CA Licensed

Same Day When You Need Us

From leaks and fixtures to water heaters and whole-home repiping, Drain Doctor handles the plumbing work homeowners and businesses need most. Explore each service below, or view our full services catalog including drains, sewer, and trenchless options.

Plumbing Repair

Licensed plumber in Covina for leaks, fixtures, and pipe repairs.

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Water Heater Repair & Replacement

Water heater repair, replacement, and tankless installs for Covina & the SGV.

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Water Softener Repair

Water softener service and repair.

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Sump Pump Repair

Sump pump repair and installation.

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Backflow Testing

Backflow prevention assembly testing and certification.

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Repiping

Whole-house repiping and pipe replacement.

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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) 332-9984

24/7 Emergency Service · Same-day dispatch when you need it most

Drain Doctor on the job in the San Gabriel Valley

Call anytime (626) 332-9984

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.

Book online

Pick a time that works for you. Questions? Call us or use Request Service.

Returning customer? Customer portal →

Drain Doctor Covina

3820 Valley Blvd Unit O
Walnut, CA 91789

(626) 332-9984

draindoctor96@icloud.com

Hours

Monday–Friday: 8:00 AM – 5:00 PM
Saturday: 8:00 AM – 12:00 PM
Sunday: Closed

Dispatch & office

Our Walnut headquarters

Drain Doctor Plumbing & Rooter

3820 Valley Blvd Unit O
Walnut, CA 91789

Open in Google Maps (626) 332-9984

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.

Also serving

See our other service areas →

Don’t see your city? Contact us—we may still be able to help.