8,663 Ontario, CA Plumbing Contractors

When a construction or home improvement job involves installing or repairing water, gas or other pipes, it’s smart to hire a licensed plumbing contractor. His or her expertise can help prevent costly water damage to a home’s structural elements. Building a new California home or remodeling an existing one nearly always calls for a plumbing contractor as well. More 
Los Angeles, CA, 90045
44 miles from Ontario
We have been in business almost 20 years, principally performing high-end remodels. Our service area is the West Side of Los Angeles, the South Valley, and the South Bay. We can... Read More
Glendora, CA, 91741
13 miles from Ontario
Electrical Plumbing Heating & Air Conditioning Refrigeration General Contractor Home & Commercial Services & Repair. Improving Energy Efficiency and maintaining High Levels of... Read More
Rancho Santa Margarita, CA, 92688
29 miles from Ontario
We are a family-owned and operated company that has been servicing South Orange County for the past 25 years. We specialize in servicing both residential and commercial clients... Read More
Yorba Linda, CA, 92886
14 miles from Ontario
Since November of 1989, AA Atlas Plumbing, Heating, & Air has been a Family Owned and Women Operated Orange County plumbing, heating, and air conditioning company. We specialize... Read More
Rancho Cucamonga, CA, 91730
5 miles from Ontario
If you are looking for first-class plumbing service in the area then you have come to the right place!Call us today for friendly service, reasonable pricing, and knowledgeable... Read More
Brea, CA, 92821
17 miles from Ontario
For over 50 years, the family behind Best Electrical, Plumbing, Heating & Air has been proud to service Orange County. We've helped to solve the electrical, plumbing, heating, and... Read More
A & A Plumbing Inc. (951) 221-8999
Riverside, CA, 92508
24 miles from Ontario
When you are in need expert plumbing repairs and services, turn to the professionals with over 50 years of combined experience in the residential and commercial plumbing industry,... Read More
APEX PLUMBING (888) 266-5591
Los Angeles, CA, 90001
35 miles from Ontario
As professional plumbers in Los Angeles that take pride on good quality and the provision of very durable services we make sure we use only the best quality plumbing materials in... Read More
Lakewood, CA, 90715
29 miles from Ontario
We provide sewer pipe locating and video services visually documenting pipe condition and troubleshooting. Read More
Big Bear City, CA, 92314
50 miles from Ontario
At Bear Valley Plumbing & Heating we are committed to becoming your Big Bear plumber, heating, and air conditioning company. We do that in the best way we know how, by keeping the... Read More
Arneson (877) 433-6885
Temecula, CA, 92592
50 miles from Ontario
We are a family-owned and operated plumbing company that offers solutions for all your plumbing needs. We do , Water heaters,Faucets,Toilets, Garbage Disposals,Showers, sewers &... Read More
Dakota Plumbing, Inc (949) 204-7556
Fountain Valley, CA, 92708
30 miles from Ontario
All manner of plumbing service and repair including kitchen and bath remodels Read More
Chino Hills, CA, 91709
8 miles from Ontario
In Chino Hills, California, people know there is one name they can trust when it comes to emergency plumbing service: My Chino Hills Plumber Hero. For over 20 years, Trystan... Read More
San Clemente, CA, 92672
44 miles from Ontario
Don’t sacrifice budget for quality or vice versa; call us and get both! For the past 25 years, San Clemente Pronto Plumbers has built a reputation for fast, reliable plumbing and... Read More
My La Verne Plumber Hero (909) 475-0144
La Verne, CA, 91750
8 miles from Ontario
We have the best prices on emergency plumbing service in La Verne, California! Our team of experts plumbers are ready and waiting to come to your rescue when a plumbing problem... Read More
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What Does a Plumbing Contractor Do?


A plumbing contractor handles the installation and repair of water, sewage and natural gas pipes throughout a home, as well as interior and exterior faucets and fixtures. Plumbing contractors are also trained to work with water mains, septic tanks, laundry appliances, water heaters, sump pumps and other plumbing and pipe systems. Because plumbing work is done largely behind walls and beneath floors, some plumbing contractors can repair or replace tile, stonework and other surfaces. Although some California plumbing contractors are generalists, others specialize in specific areas: residential emergencies and repairs, remodeling, natural gas lines, sprinkler systems and more. You can find more plumbing contractors in Anaheim, Jurupa Valley, Riverside, San Bernardino and Fontana.

Questions to ask a prospective plumbing contractor:


  • How long have you been in the business?
  • How many projects like mine have you completed?
  • Who will be working on the project?
  • Are the workers employees or subcontractors?
  • Can you provide me with references?
  • Are you and your employees licensed and insured?
  • What license(s) do you have?
  • How do you charge, and what does that include?
  • Can you give me a written estimate?
  • What do your services include?
  • How will I be charged for parts and materials?
  • Who will make repairs to any structural damage that results from the job?
  • When can this job get done?
  • What happens when cost exceeds the budget? What about changes to materials or labor pricing?
  • What will I need to provide?
  • Are there any important considerations or concerns you foresee with this project?

Find a plumbing contractor on Houzz. Narrow your search in the Professionals section of the website to Ontario, CA plumbing contractors. You may also look through photos of California projects to find a plumbing contractor who has worked on a project similar to yours. If you’re planning a large-scale project, find other professionals on Houzz who can help get the job done. Here are some related professionals and vendors to complement the work of plumbing contractors: General Contractors, Septic Tanks & Systems, Kitchen & Bath Designers, Kitchen & Bath Remodelers.
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