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
"A first time apartment owner and landlord, I needed major plumbing services within the first 6 months of ownership. The first time was a series of gas leaks which were quickly repaired by Western Rooter. The second time was the significant work of adding 2 gas meters and the requisite task of re-routing/adding gas piping. I simply cannot recommend Daniel Westereng and Western Rooter enough. Although the owner John came out to assist in the final bid, Daniel and I worked consistently with SoCal Gas to coordinate the improvements. Daniel was quick to return texts, calls, e-mails and worked diligently with all the parties to get the job done. If you need a plumber, save time and call Western Rooter. Tell them to send Daniel Westereng and he will do a fantastic job!"
+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
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
"I purchased a water heater from Do It Right Plumbers . The tech, Chris, was on time and very thorough The installation went as smooth as could be. When the work was finished, you wouldn't have known any work had been done. It was that clean. Not only would I recommend them, but I also plan to use them in the future for my plumbing needs."
+1
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2019
Credit card accepted
Offers commercial services
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
Serving Diamond Bar, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Emergency services offered
"Office staff very timely and kept me informed throughout the project, the service person was very helpful and did a very professional job, left the area cleaner than when he started. Thanks for the follow-up and great service throughout. Your my plumber!"
+9
Serving Diamond Bar, CA and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"The plumber was very knowledgeable and professional. They kept the job site clean and we are very happy with the results."
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