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Best 5 Plumbers in Ontario, CA

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Written By Callie Marsalisi|Last Updated: February 05, 2024

If you're dealing with plumbing issues, use our list of Ontario, California's top plumbers to help. Learn which professionals you can find in your area and what problems they can assist with below.

5 Best Plumbers in Ontario

Klaus & Sons Plumbing, Heating & Air Conditioning Logo

Klaus & Sons Plumbing, Heating & Air Conditioning

Based on 817 customer reviews.

Services Offered

Garbage DisposalEmergency CallsToiletsSewersGas PipesWater Heater


  • Free quotes
  • Timely service
  • Educates customers
5623 E Arrow Hwy, Montclair, CA 909-982-5698 klausandsons.com
Sweetwater Plumbing Logo

Sweetwater Plumbing

Based on 412 customer reviews.

Services Offered

Camera InspectionsEmergency CallsRemodelingWater HeaterTrenchlessSewersDrainsInspections


  • Transparent pricing
  • Free quotes
  • Great customer service
4667 Holt Blvd, Montclair, CA 909-312-4516 sweetwaterplumbing24-7.com
Scott McLeod Plumbing Logo

Scott McLeod Plumbing

Based on 601 customer reviews.

Services Offered

Emergency CallsFixturesLeak RepairGas PipesDrainsWater HeaterInspectionsSewersCamera InspectionsTrenchless


  • Free quotes
  • Great customer service
  • Timely service
8222 Foothill Blvd, Rancho Cucamonga, CA 909-980-9907 scottmcleodplumbing.com
All City Plumbing Logo

All City Plumbing

Based on 6,341 customer reviews.

Services Offered

RepipingFixturesSewersGarbage DisposalGas PipesLeak RepairBackflow TestingWater TreatmentCamera InspectionsInspectionsDrainsTrenchlessToiletsEmergency CallsWater Heater


  • Educates customers
  • Great customer service
  • Transparent pricing
9447 London Way #102, Rancho Cucamonga, CA 909-552-7550 allcityplumbing4u.com

More Local Plumbing Companies

Rooter Hero Plumbing & Air

User Reviews: 5/5 

2040 N Towne Ave
Pomona, CA 91767

All Pro Plumbing, Heating, Air & Electrical

User Reviews: 5/5 

5001 Ontario Mills Pkwy
Ontario, CA 91764

Plumbing Method | Emergency Plumbers Chino

User Reviews: 4.7/5 

15944 Ellington Wy
Chino Hills, CA 91709

Redhead Rooter Plumbing Drain Cleaning & Hydrojetting

User Reviews: 4.7/5 

517 N Mountain Ave
Upland, CA 91786

Fossler Plumbing

User Reviews: 4.7/5 

8167 Vineyard Ave APT 30
Rancho Cucamonga, CA 91730

Advanced Plumbing Solutions Inc

User Reviews: 4.7/5 

9771 Feron Blvd
Rancho Cucamonga, CA 91730

Ramco Plumbing

User Reviews: 4.7/5 

9328 Foothill Blvd
Rancho Cucamonga, CA 91730

Fierce Plumbing Inc

User Reviews: 4.7/5 

5670 Schaefer Ave # D
Chino, CA 91710

Trinity Plumbing LLC

User Reviews: 4.7/5 

9431 Haven Ave #100
Rancho Cucamonga, CA 91730

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Ontario
Average Winter Temp:50.1°F
Drought Risk:0.5%
Average Water Bill:$81
Average Plumbing Cost:$98 - $327
Average Monthly Precipitation:0.59"
Elevation:305 ft

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Common Types of Plumbing Services

Most professional plumbers in Ontario and the surrounding areas offer the following services.

Leak Repair

Even small leaks can get expensive quickly if not taken care of properly. Your plumber should be trained to fix leaks and identify the cause to prevent more.

Drain Cleaning

Debris buildup that blocks drainage can damage your pipes and lead to flooding. If unaddressed, a blockage can even lead to structural damage. Professional plumbers are trained to identify what's causing the clog and remove it without damaging your plumbing.

Bathroom Installation

Plumbers can install or replace showers, tubs, toilets, and sinks. Thoroughly vet any plumber you hire, especially for a more expensive project. Look for a licensed contractor who has good customer reviews and sufficient industry experience.

Gas Inspection and Installation

You can look for a plumber to fix gas leaks. These plumbers are trained to install, repair, and find problems in gas pipes and appliances, such as ovens, stoves, and hot water heaters. These kinds of services come with risks, so ensure you're hiring a highly credentialed plumber.

Inspection and Maintenance

Annual inspections are a great way to reduce the risk of inconvenient and expensive plumbing problems. Your household plumbing undergoes lots of wear and tear, especially when there are several people living under your roof. A local plumber can perform regular inspections and stop problems before they get out of hand.

Emergency Plumbing Services

Plumbing problems are never convenient, but the worst ones occur at night. The last thing you want to deal with after a long day is a burst pipe or unusable toilet. Plenty of contractors offer emergency services and can help you any time of the day or night, so you don't have to wait until morning to get an urgent issue fixed.

How Much Does a Plumber Cost in Ontario?

The cost of plumbing services will be based on several factors, such as the following:

  • Amount of labor required
  • Plumber expertise (apprentice, journeyman, or master)
  • Project complexity
  • Required permits
  • Time of day (after-hours services cost more)
  • Your location
See the average cost of common plumbing services in the Ontario area based on quotes we requested from local plumbers:
Repair TypeAverage Cost
Garbage disposal repair$309
Toilet repair$309
Faucet replacement$386
Radiator repair$386
Clearing clogs/drain snaking$463
Leaking pipes$463
Water softener installation$541
Gas line repair$618
Water heater repair$695
Sink installation$773
Sump pump repair$773
Toilet installation$773
Water heater installation$2010
Burst pipe$3866

How to Choose a Plumbing Service in Ontario

It's important that plumbing work is done correctly. You also want to pay a fair price. These are some things to look for when hiring a local Ontario plumber.

Reputation and Reviews

Always ask to see a plumber's proof of business insurance and license from the California Department of Consumer Affairs before signing a contract. Anyone who works on your home should be properly credentialed, and ideally should have experience with the type of job you're hiring for. Always read customer reviews to learn about a plumber's reputation.

You might prefer to hire a plumber who's part of a union, meaning they've been thoroughly vetted. If you hire a union member, you may pay more for labor.

Services Offered

Not all companies offer or are qualified to perform the same types of plumbing work, so ask your contractor about their previous experience. You can look at a company's website to find out what services it provides and ask your plumber for photos of past jobs as proof of experience and quality.


You need to balance qualifications and cost when selecting a plumber. Ask for price estimates from at least three providers to compare services and rates. As much as you can, try to prioritize quality of work over price.

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Frequently Asked Questions About Plumbing in Ontario

What's the cost of a plumber in Ontario?

The cost of Ontario plumbing services varies based on the work required and the plumber's experience—master-level plumbers cost more than apprentices. Something like faucet repair will cost less than jobs such as replacing a sink. Plumbing repairs fall between $98 and $327 on average.

Is it important to get a quote from a plumber?

Yes, we recommend calling or going online to request a quote before hiring a plumber. This helps you budget for the project and prevents unexpected costs.

How do I hire a professional plumber?

Most plumbing contractors allow you to schedule services by phone or online. Verify a company's license and business insurance, read customer reviews, and get a personalized price estimate before committing to a contractor.

What are the most common plumbing issues?

Common types of plumbing issues include running toilets, water leaks, clogged drains, septic issues, faucet repairs, low water pressure, and sewer line repairs. A professional plumber can help identify and resolve any of these problems.

Should I tip my plumber?

You're not expected to tip for plumbing services. You can opt to do so, however some companies forbid employees from accepting tips.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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