4.5 
1.2k+ *The Angi rating for Plumbing companies in Diamond Bar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plumbing needs.
*The HomeAdvisor rating for Plumbing companies in Diamond Bar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plumbing needs.
Last update on March 14, 2025
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Plumber John from JIG Plumbing was professional, efficient, and hard-working. We were very pleased with the final result."
+8
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 1981
Free estimates
Emergency services offered
"Customer service is ALWAYS excellent as I have used Western Rooter and Plumbing many times."
+542
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2011
Free estimates
Credit card accepted
"Leo is an Experienced plumber, He is a pro, and the service was great, The owner of this company Caesar was very helpful explaining the detail of the system and he give his recommendations..."
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"Two really great qualified plumbers. They knew their stuff! I would/ will call on SoCal Plumbing again!!"
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
Welcome to AMZ Plumbing. We work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.
Serving Diamond Bar, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"Jose (with JRC Plumbing) did an excellent job replacing my kitchen faucet. He quickly responded to my request and was on time to the job site. He was clean and effecient (everything you hope for in a plumber inside your home)! His attention to the details (making sure the faucet was centered and no smudges) was definately appreciated. I highly recommend Jose for your next job!"
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Daniel was very helpful and knowledgeable he was able to get the job done on time and good price I would recommend him for your plumbing needs ."
+16
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2007
Emergency services offered
Warranties offered
"Joe from Do It Right Plumbers was great. Fast and efficient."
+1
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Fast and professional. Did a nice job with the plumbing that looked great when they were done. Cleaned up the area including the trimmings of the bush they trimmed to get to the shut off valve. Would definitely use them again."
+57
Serving Diamond Bar, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"We’ve had so many plumbing projects over the years and have always used Rapid Rescue. They have replaced our water heater, completely plumbed two bathrooms & worked on the house mainline as well as the gas line and hooking up the water lines for the washer & dryer. They are honest, reliable and affordable. The work they have done has been top notch and it lasts. I highly recommend Wes and Rapid Rescue for all of your plumbing needs."
+18
From average costs to expert advice, get all the answers you need to get your job done.
Find out the average toilet installation cost in Los Angeles, CA. Learn what you can expect to pay for a new toilet and local plumber labor rates.
How much does a plumber cost in Los Angeles? Learn what impacts plumbing costs in the City of Angels and how to hire the best plumber in LA for your project.
Under the sink, behind the tub, or through the walls—pipe replacement costs in Los Angeles, CA for small projects run the gamut. Here's what to know.
Need to create a residential plumbing design layout but don’t know where to start? Learn essential plumbing components to create the perfect layout for your home.
When you’re building your dream home, the plumbing is pivotal. Learn the elements that make up plumbing for new construction with our helpful tips.
There are a few plumbing terms that everyone needs to know. Using this informative guide, you’ll learn plumbing terms like flapper and shut-off valve to help you tackle both emergencies and everyday annoyances.
