4.6 
2k+ *The Angi rating for Plumbing companies in Ontario, 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 Ontario, 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 June 24, 2025
Serving Ontario, CA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"The plumber spent a lot of time just trying to figure out the source of the hidden leak. He had a lot of patience. The quality of work was good as was the price. I would definitely hire them again."
+8
Serving Ontario, CA and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"Isaac was great!!!! Job completed in a very professional and timely manner. Will definitely use Dynasty plumbing for future projects."
+14
Serving Ontario, 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 Ontario, 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 Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"They were very helpful and did a wonderful job. They were very pleasant and answered all my questions. I would highly recommend them for your plumbing needs."
+81
Serving Ontario, CA and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Dany is very professional and responsible. He did such a great job with my plumbing repair. He has really good prices, and the fact that he finished the project in estimated time given was a plus to me! I have recommended him to friends and family. And now I recommend him here, if your looking for someone with experience and completion of your repairs he is the one to call."
+16
Serving Ontario, 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 Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Emergency services offered
Warranties offered
"Roger, owner and plumbing, showed up on time...performed all requested and required repairs. He did a a great job performing the necessary repairs and cleaning up afterwards with charging a very fair price. I'm beyond happy with all of the completed work."
+6
Serving Ontario, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"We had a terible drain clog and had backups coming into our toilet and shower. We called Diamond House Plumbing and they sent Jeff out right away. He was able to clear the blockage, pulling out many roots and blasting our lines clear with a very impresive water hydro-jet system. I would highly recomend Diamond House Plumbing to my friends and family and anyone in need of professinal plumbing services. Thank you!"
+36
Serving Ontario, CA and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
"Prompt, respectful, explained everything, very reasonably priced, I was very pleased. I would definitely continue using them for ANY of my plumbing issues in the future."
+16
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