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Drain Guide

Drain Won't Stop Backing Up — What to Do Right Now

If your drain keeps backing up, do this first: check whether one drain is affected or several. A single slow drain is usually a localized clog you may be able to address yourself. Two or more drains backing up at the same time — kitchen sink, shower, and toilet all slow at once — signals a main sewer line blockage. That is not a DIY situation. Stop using water and call a licensed plumber immediately. Gardner Plumbing Co. handles drain emergencies across Riverside County, including Murrieta, Riverside, Corona, Hemet, and 21 other cities, 24 hours a day at (951) 246-4337.

Last Updated: June 2026

Gardner Plumbing technician reviewing camera inspection footage on a tablet showing tree root intrusion in a drain pipe
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What to Do in the Next 15 Minutes

  1. 1

    Do not pour chemical drain cleaner down the drain.

    Drano, Liquid-Plumr, and similar products are lye-based. They generate heat, accelerate corrosion in older PVC and galvanized pipe, and dissolve organic tissue partially — enough to push a clog deeper without removing it. They also leave a caustic residue that puts a technician at risk when opening the line. Skip them entirely.

  2. 2

    Count how many drains are affected.

    Walk through the house. Turn on the kitchen faucet, flush a toilet, run the shower. If more than one fixture drains slowly or backs up, you have a main line problem. The main sewer line runs beneath your home and connects every fixture. A blockage there affects everything downstream. Skip to Step 5.

  3. 3

    If it is a single drain, try a cup plunger.

    A standard cup plunger works on sinks and tubs. Cover the overflow opening with a wet cloth first — this creates suction rather than releasing it. Give it 10 to 15 firm strokes. If water begins draining, run hot water for two minutes to flush any loosened debris through. If the clog does not clear within two plunging attempts, stop.

  4. 4

    Stop sending water toward the problem.

    Turn off the dishwasher and washing machine. Do not run baths or flush toilets more than necessary. Every gallon you add behind a blocked line increases hydrostatic pressure and raises the chance of sewage backing up into lower fixtures — floor drains, tub drains, even the shower pan.

  5. 5

    Call Gardner Plumbing Co. at (951) 246-4337.

    At this point you have done what homeowners can safely do. A professional will arrive with a motorized drain auger (snake) for straightforward clogs and a hydro-jet for stubborn or recurring blockages. Routine drain snaking takes 30 to 60 minutes. Most homeowners are back to normal the same day.

The Math

Fixing it now is cheaper than replacing the line.

Professional Drain Cleaning

$150 – $450

Snake, hydro-jet, or camera + clear line

Main Line Replacement

$4,000 – $12,000+

Repeated ignored clogs, root damage, or pipe collapse

What Happens Next

What Happens When Gardner Plumbing Arrives

Camera inspection first.

A waterproof camera goes into the line so the technician can show you exactly what is causing the blockage — grease accumulation, a crushed pipe section, or root intrusion — on a screen, in real time. You see what they see before any work begins.

Snaking vs. hydro-jetting — the right tool for the job.

A drain snake (auger) breaks through soft clogs: hair, soap scum, food debris. Hydro-jetting uses water pressurized to 3,500 PSI to scour pipe walls clean, cut through roots, and flush mineral scale. The technician recommends one method or the other based on what the camera shows — not on what costs more.

Written estimate before work begins.

The Gardner Promise requires a written price before any tool goes into the line. The price on the estimate is the price on the invoice.

Clean exit.

Gardner Plumbing Co.'s technician protects work areas with drop cloths and shoe covers, and cleans the area before leaving.

Know the Cause

Why Drains Clog — and How to Read the Signs

Most drain clogs build gradually over months. In kitchens, the culprit is almost always a grease-and-soap combination. Cooking oil poured down the drain cools and solidifies on pipe walls. Over time the passage narrows until water can barely move through.

Bathroom drains fail differently. Hair catches on the drain stopper and on the pivot rod of pop-up assemblies. Soap scum binds it into a dense plug. Southern California hard water accelerates this. Riverside County tap water carries 250 to 350 parts per million of dissolved calcium and magnesium — roughening the interior surface and giving grease and hair something to adhere to.

The other major cause in Riverside County is tree root intrusion. Older neighborhoods in Corona, Riverside, and Hemet were developed in the 1950s through 1970s with clay and cast-iron sewer laterals. Those pipes develop cracks as they age, and tree roots — drawn to moisture — infiltrate at every joint and fissure. A camera inspection is the only way to confirm root intrusion; once confirmed, hydro-jetting combined with a root-inhibiting treatment is the standard remedy.

What You Get

Professional Equipment & a Drain That Actually Drains

Gardner Plumbing Co. brings the right tool for your specific clog — snake, hydro-jet, or camera — and leaves your fixtures cleaner than we found them.

Gardner Plumbing Co. hydro-jetting service clearing a residential drain line with high-pressure water

Hydro-Jetting on Site

3,500 PSI cuts through grease, roots, and mineral scale. No harsh chemicals.

Clean kitchen sink with water draining freely after professional drain cleaning service by Gardner Plumbing

Freely Flowing Drains — Same Day

Cleanup included. Fixtures polished. Camera confirmation the line is clear.

FAQ

Drain Clog Questions Answered

Questions & Answers

Related Resources

Keep Reading

Drain Cleaning Service

Full service page for professional drain cleaning across Riverside County.

Sewer and Septic Service

Main line inspections, lateral repairs, and sewer replacement.

What to Do If a Pipe Bursts

Immediate steps to limit water damage.

Signs You May Have a Slab Leak

Unexplained wet floors and rising water bills explained.

Gardner Shield Maintenance Plan

Annual plumbing checkups that catch drain problems before they become emergencies.

Plumbing Inspection Checklist

What to check before you buy a home.

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Customer Stories

Real Stories From Real Customers

What Riverside County homeowners wrote after Gardner Plumbing fixed their drain and sewer problems.

Water Heater Installation

Gardner Plumbing was amazing, from Jenny in the office to Mitchell who installed our water heater. They are professional. Mitchell explained the whole process. I received a text with his picture so I knew exactly who was coming to my home. He took the time to walk us through everything before starting, kept the work area clean, and left everything spotless. Jenny followed up after the install to make sure we were happy. This is the kind of service that earns a customer for life.

Marie C.

Riverside County, CA
Technician: Mitchell

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Our Promise to You

The Gardner Promise

We Own It.

Gardner Plumbing Co. backs every service call with four hard commitments — written terms, not marketing language. This is what we stand behind.

30-Day Callback Guarantee

If the same issue recurs within 30 days of our service visit, a Gardner Plumbing technician returns at no charge. Parts and labor are covered.

Written Estimate Before Work Begins

The price on the written estimate is the price on the invoice. If anything changes mid-job, we stop, explain, and get your written approval before continuing.

No Trip Fees, No Pressure

Free in-home estimates. No dispatch fee, no service-call fee, no obligation to proceed.

Fully Licensed, Bonded & Insured

CSLB #1073177, fully bonded, fully insured. We pull permits and handle inspections on every job that requires them.

CSLB #1073177939+ five-star Google reviews30+ years serving Riverside County

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Ready to Fix It Today?

Gardner Plumbing Co. serves 25 cities across Riverside County, eastern San Bernardino County, and the Coachella Valley. No trip fee. No service-call fee. Written price before any work begins. CSLB #1073177.

CSLB #1073177 · Licensed, Bonded & Insured