4.9/5 stars on Google 500+ reviews
(626) 332-9984 Existing clients

Since 1996

About Drain Doctor

Family-owned plumbing and rooter serving Covina and the San Gabriel Valley with the same care we'd give our own neighbors.

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 crew — Joe Castro
Drain Doctor plumbing professional on a service call in the San Gabriel Valley
Drain Doctor crew — Issiah C
Drain Doctor plumbing service in the field
Drain Doctor plumbing service in the field
1996 Serving the Valley
24/7 Emergency Service
#803591 CA Licensed
Same Day When You Need Us
✓ Licensed #803591
✓ Clear written estimates
✓ Our own equipment
✓ 24/7 Emergency Service

Who we are

Drain Doctor Plumbing & Rooter is a California plumbing contractor (CSLB #803591) serving homeowners and businesses since 1996. Our office is at 3820 Valley Blvd Unit O, Walnut, CA 91789; the Drain Doctor Covina phone number is (626) 332-9984 for scheduling and 24/7 emergencies. Office hours are Monday–Friday 8:00 AM–5:00 PM and Saturday 8:00 AM–12:00 PM Pacific; Sunday closed. We dispatch from Walnut, CA, and serve Covina, West Covina, Glendora, Walnut, Pomona, Chino Hills, and communities across the San Gabriel Valley and nearby Los Angeles and San Bernardino Counties—see the service areas page for regions and cities.

Our story

About Drain Doctor Plumbing & Rooter

Drain Doctor Plumbing & Rooter is a family-owned and operated business that has been providing high-quality plumbing services and repairs to the Los Angeles and San Bernardino Counties since 1996. Our professional plumbing company can quickly and accurately diagnose any work that needs to be done, which allows us to give you prompt and fair estimates before any service has begun.

From drain cleaning and hydro jetting to sewer line repair, water heaters, and whole-home repiping, we keep the full job in-house whenever possible—our trucks, our cameras, our jetters—so you are not paying for middlemen or last-minute equipment rentals.

Meet our team →

Professional plumbing technician at work

Why us

We Are Your Trusted Plumber

Our team is highly trained and experienced to resolve an array of plumbing issues. We provide a comprehensive range of plumbing services including drain cleaning, hydro-jetting, camera inspections, water heater repair, repiping, trenchless sewer repair, and more.

Make sure to get in touch with our professional plumber in Covina, CA, and the nearby areas for any plumbing needs. We are licensed and insured for your peace of mind.

Drain Doctor trusted plumbing services

Ready when you are

We Are Prepared for Any Job

We're fully prepared to handle any plumbing-related service you may need. We always use our own equipment, which helps you save money, while other companies need to rent the right tools. We are fully licensed and insured, and our team is comprised of fully trained technicians who are friendly and knowledgeable.

Contact Us

Quality plumbing installation and repair
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.

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.

Full service areas overview →

Google Reviews

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Frequently asked questions

Quick answers about service areas, emergencies, licensing, and how to reach Drain Doctor.

What areas do you serve?

Drain Doctor Covina dispatches from Walnut, California, and serves Covina, West Covina, Glendora, Walnut, Pomona, Chino Hills, and communities across the San Gabriel Valley and nearby parts of Los Angeles and San Bernardino Counties. The full list of regions and cities is on our service areas page at https://thedraindoctorcovina.com/service-area/.

Do you offer emergency plumbing service?

Yes. Drain Doctor Plumbing & Rooter provides 24/7 emergency plumbing and drain dispatch. The Drain Doctor Covina phone number is (626) 332-9984—call any time or use the Request Service option on https://thedraindoctorcovina.com for urgent help.

Are you licensed and insured?

Drain Doctor Plumbing & Rooter holds California Contractors State License Board license #803591 and is fully insured. You can verify the license at https://www.cslb.ca.gov/onlineservices/checklicenseII/LicenseDetail.aspx?LicNum=803591. Our technicians are background-checked.

How do estimates work?

Drain Doctor Covina diagnoses the issue, explains your options, and reviews the scope with you before work begins—so you can approve the plan without surprise add-ons.

Can you come out the same day?

We offer same-day plumbing and drain service whenever scheduling allows, especially for emergencies. Call (626) 332-9984 early in the day for the best availability.

Do you use your own equipment?

Yes. Drain Doctor Plumbing & Rooter uses our own trucks and tools, so you are not paying rental markups that some companies pass through, and you get consistent quality from our crew.

How do I schedule service?

Call (626) 332-9984, use the Request Service button on this site, or visit https://thedraindoctorcovina.com/contact-us/ to send a message—we follow up quickly.

What kinds of plumbing work do you do?

Drain Doctor Plumbing & Rooter handles residential and commercial plumbing, drain cleaning, hydro-jetting, camera inspections, water heaters, repiping, trenchless sewer repair, and more. The complete list is at https://thedraindoctorcovina.com/service/.

Why is my drain clogged or draining slowly?

Common causes include hair and soap in showers, food grease in kitchen sinks, foreign objects, or buildup deeper in the line—sometimes tree roots in the sewer. Store-bought chemicals rarely fix the real problem and can damage pipes. Drain Doctor Covina diagnoses with video pipe inspection when needed, then clears or repairs the line properly. Call (626) 332-9984 for help.

My shower drain is clogged or the bathtub is not draining—what should I do?

Stop using fixtures that tie into the same line to avoid backups. For a slow draining sink or stubborn shower clog, professional drain cleaning or hydro jetting clears the blockage safely. Drain Doctor Plumbing & Rooter offers same-day service in Covina and nearby—call (626) 332-9984.

What are signs of a sewer line backing up?

Gurgling toilets, multiple drains acting up at once, sewage smells, or water backing up in tubs or floor drains can mean a main line problem. Sewer line inspection with a sewer camera finds the cause—whether it is a clog, bellied pipe, or root intrusion—so Drain Doctor Covina can recommend sewer repair or cleaning. Call (626) 332-9984 to schedule.

Call (626) 332-9984