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Top-Rated Water main install, replace or repairers in Ontario - Updated Nov 2026

Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"Hats off to Daniel W. from Western Rooter who installed a water filtering system in my garage. Right from speaking with him on the phone, he was courteous, friendly, and very knowledgeable in his craft. You would think that companies would offer you their premium package right from the beginning but not Daniel. Instead, he asked what I was looking for and took the time and effort to send me multiple filtering systems (including Amazon choices) to choose from. This gesture tells you that he is looking for the customer's best interest at hand which is outstanding. Once I selected my choice, he thoroughly explained the contract and servicing process as well as answered all the questions I had. No big complicated words or complex contracts to decipher but simple and easy was the way Daniel pitched it. All in all, Western Rooter needs to hire more professional, knowledgeable, and charismatic people like him as he is a prime example of excellent customer service. I plan to use his services in the future and will definitely refer him to neighbors, friends, and family. Thank again Daniel W."
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for RighTime Home Services / Rescue Rooter LA Riverside
RighTime Home Services / Rescue Rooter LA Riverside
4.1(
348
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved (Corporate)

In business since 1975

Free estimates

Emergency services offered

"David sold this water heater replacement job to me with his knowledge, professionalism, kindness, and accuracy of what to expect. Jose is a fantastic installer. After he finished, he took the time to explain to me what I needed to know to operate the water heater. I did get cheaper bids but for the money I spent this group was the right call for me. They went above the call of duty to make sure everything was handled correctly. This includes the verification phone call. Thank you young lady."
Fixing a leak.
59 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Service Flow Plumbing
Service Flow Plumbing
5.0(
23
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Service Flow did an excellent job replacing my old water heater and piping everything in with copper. Their professionalism, workmanship, and clear communication throughout the entire process really stood out. The job was completed efficiently and to a very high standard. I’m very happy with the results, would highly recommend Service Flow, and will definitely be using them again in the future."
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve
Sewer Main Valve

+81

Response time8 hrs
Response rate98%
19 neighbors recently requested a quote
Avatar for 1 TOM PLUMBER ANAHEIM / BREA
1 TOM PLUMBER ANAHEIM / BREA
5.0(
21
)
Water Main - Install, Replace or Repair

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."
Leak Detection
Plumbing
Sewage Cleanup
Leak Detection
Plumbing

+70

Response time8 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
37
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Alpine plumbing replaced my main water line for a great price and in a very timely manner. They are very professional and would %100 recommend if you need any plumbing repairs done."
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time9 hrs
9 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for RT Olson Plumbing, Heating and Air Conditioning
RT Olson Plumbing, Heating and Air Conditioning
4.5(
218
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I bought a hot water heater to replace the one that calcified due to Anaheim water. Technicians : Marty, Parker and Shane were excellent. I would recommend this company RT Olsen Plumbing Heating and Air Conditioning. They took out my old water heater and halled it away. The new water heater was installed with no problems. I Gave this company and there excellent crew 5 Star"
New AC Installation
Tankless water heater
New Thermostat
Shower head system installation
Helping customer with new water filtration system

+57

Response time9 hrs
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for So-Cal 1 Plumbing & Rooter
So-Cal 1 Plumbing & Rooter
5.0(
41
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Emergency services offered

"Great service and work from Miguel and team. I would hire them again. What originally was a slow draining sewer line turned into a root infested backup. Miguel was able to scope the drain and visualize the root of the problem. They were prepared to start digging and had the tools and supplies on the truck to get the job completed. He clearly explained the discovery, repair, and installation process as well as potential other root intrusion spots. After the dig, the soil and grass was replaced and can hardly tell that any work was done. They also cleaned the dirt/mud on the concrete walk way. Thank you Miguel and team for the great work."
repair
full house redrain
full house redrain
full house redrain
sewer repair

+27

Response time4 hrs
Response rate99%
Recommended by18%of homeowners
Avatar for Complete Plumbing & Rooter
Complete Plumbing & Rooter
4.9(
30
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Credit card accepted

"It was a pleasure having them replace our hot water heater. They were very professional and they made sure the area was clean when they finished. More importantly I will use them again if we have a plumbing problem."
Response time9 hrs
11 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Complete Plumbing & Rooter
Complete Plumbing & Rooter
4.9(
30
)
Water Main - Install, Replace or Repair

Serving Ontario, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

Logo
Recommended by57%of homeowners
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FAQs for water main install, replace or repair projects in Ontario, CA

Most standard homeowners' policies don’t cover water main line replacement costs because this project is considered wear and tear, not sudden damage. Check your declarations page for exclusions and talk with your agent about add-on service-line coverage if you want help footing the bill for your water main line replacement costs.

Yes—hire a licensed plumber any time the job taps into a city-owned line or local codes. Professional plumbers carry the right permits, tools, and insurance, and they know how to avoid costly mistakes that could flood your yard or trigger fines. Pros can also provide expert recommendations on the type of system and materials that will work best for your situation, and they can guide you on best practices for ongoing maintenance.

The Ontario, CA homeowners’ guide to water main install, replace or repairs

From average costs to expert advice, get all the answers you need to get your job done.