4.6 
2k+ *The Angi rating for Sump Pump Installation companies in Ontario, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.
*The HomeAdvisor rating for Sump Pump Installation companies in Ontario, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.
Last update on October 31, 2025
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
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"I Called to get an in person quote for a tankless water heater flush and left this job with a whole house filter and a fridge connection. When Michael first arrived we inspected the tankless unit and tested the water to conclude flushing was not my best option. He then walked me through my options for home filters and we decided on a Halo system. Michael was very well educated on the subject and gave me the best value filter for my needs. He installed the unit the next day in less than a few hours and left me with a flawless work of art. I couldn't be more impressed with the professionalism he brings to this trade! I also requested to hook up a fridge and he did that in what seemed like 30 minutes. He will be the only plumber I call from now on!! Thank you Michael!!!"
+26
Serving Ontario, CA and surrounding areas
Approved
In business since 2010
Emergency services offered
Warranties offered
"Richard did a really good job he replace my water heater he was very nice and i would really recommend him…"
+6
Serving Ontario, CA and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"We’ve used this plumbing company multiple times across several properties and have always had a great experience. Extremely knowledgeable, professional, and quick to respond whenever we need service. It’s hard to find honest plumbers with real experience, and these guys definitely know what they’re doing. Every job has been handled efficiently and with great attention to detail. Communication is always excellent, pricing is fair, and they consistently deliver quality work. We truly appreciate having someone reliable we can count on for our properties. Highly recommend to anyone looking for a dependable and experienced plumber. Five stars all the way."
+2
Serving Ontario, CA and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Response was amazing and fast. Arrived on time and kept me fully informed. Professional with complete set of moisture/ leak detection tools. Answered all our questions. Would love to recommend them."
+70
Serving Ontario, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2011
Free estimates
Emergency services offered
"I had a last minute need for a kitchen faucet installation and was accommodated within 3 hours of making the call. Athen arrived within the time frame I was given, assessed the work area and product then began installation immediately. Everything was installed within an hour and the area was cleaned up before he left."
Serving Ontario, CA and surrounding areas
Approved (Corporate)
In business since 1975
Free estimates
Emergency services offered
"Technicians Dominic and his assistant Eric were courteous, knowledgeable, and very professional. Everything was thoroughly explained before work was started. The work they performed in installing a new water heater, a new house water supply valve, regulator, and all associated valving and piping were of the highest quality and completed on time. All of my questions were answered to my satisfaction. The final guided tour of all the completed work and new equipment was also appreciated. I would be happy to have this highly efficient and effective team back anytime."
Serving Ontario, CA and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"Quick to respond, great job on the water heater install, awesome techs. Was a bit more costly than I would have hoped."
+36
Serving Ontario, CA and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Nick was amazing and got a big problem done for a reasonable price. He will be my forever plumber now"
+103
Serving Ontario, CA and surrounding areas
Approved
In business since 2002
Free estimates
Warranties offered
"Cruz Plumbing and Rooter Services is very responsive and took care of job in a timely manor"
From average costs to expert advice, get all the answers you need to get your job done.
Learn how much sump pump installation costs in Los Angeles, CA, including average prices, cost factors, and tips to save on your basement waterproofing project.
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