Top-rated water main install, replace or repairers.

Get matched with top water main install, replace or repairers in Walnut Creek, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Water main install, replace or repairers in Walnut Creek

Avatar for Service 4 Plumbing

Service 4 Plumbing

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Service 4 Plumbing

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
29 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. www.service4plumbing.net

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. www.service4plumbing.net


"I feel that I was very lucky have chosen Corsa Plumbing to do diagnose and replace 2 sewers for me. One in Lafayette and one in Pleasant Hill. Ray, was easy to work with and he did a great job of advising me on the existing problems and explaining what they would do to fix them. The camera inspection of the sewer line and the estimate were free. I was present when he did them. Both of the bids were fair, but do not include the cost of County permits. I will highly recommend you get a bid from Corsa Plumbing. You won’t regret it. You can hardly tell that the sewer was replaced Steve Walsh, retired Realtor and property manager for residential homes."

steve w on August 2025

Don't flush your money down the drain when your plumbing goes out! Trust Corsa Plumbing and Rooter to get it done right. We are available for you day or night for all types of plumbing service.

"I feel that I was very lucky have chosen Corsa Plumbing to do diagnose and replace 2 sewers for me. One in Lafayette and one in Pleasant Hill. Ray, was easy to work with and he did a great job of advising me on the existing problems and explaining what they would do to fix them. The camera inspection of the sewer line and the estimate were free. I was present when he did them. Both of the bids were fair, but do not include the cost of County permits. I will highly recommend you get a bid from Corsa Plumbing. You won’t regret it. You can hardly tell that the sewer was replaced Steve Walsh, retired Realtor and property manager for residential homes."

steve w on August 2025


Avatar for R Plumbing Companies, Inc.

R Plumbing Companies, Inc.

5.00(
3
)
Approved Pro

R Plumbing Companies, Inc.

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

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 baasis of our business

"Helped me right away. Did not have to wait all day."

Julie H on September 2023

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 baasis of our business

"Helped me right away. Did not have to wait all day."

Julie H on September 2023


Avatar for Gray Plumbing, Inc.

Gray Plumbing, Inc.

4.25(
6
)
Approved Pro

Gray Plumbing, Inc.

4.25(
6
)
Approved Pro
Customers say: Quick response
61 local quotes requested
9 years of experience

We take great pride in our experience, expertise, and quality of the customer service we provide to meet our consumers needs. It is our mission to provide excellent workmanship, and customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

"they didn't respond after the repair was left broken, they didn't offer weekend service would not recommend them"

Sherman L on October 2025

We take great pride in our experience, expertise, and quality of the customer service we provide to meet our consumers needs. It is our mission to provide excellent workmanship, and customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job

"they didn't respond after the repair was left broken, they didn't offer weekend service would not recommend them"

Sherman L on October 2025


Avatar for H K & S Plumbing Co.

H K & S Plumbing Co.

4.72(
74
)
Approved Pro

H K & S Plumbing Co.

4.72(
74
)
Approved Pro
Super Service Award
Customers say: Quick response
59 local quotes requested
25 years of experience

Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!

"Henry was prompt, very knowledgeable and was extremely easy to work with and professional. I would recommend him for your plumbing needs"

Wendy P on December 2025

Thank you for choosing H K & S Plumbing Co.! We are committed to providing quality workmanship and superior customer service to all of our existing, and future, clients. We strive to maintain our reputation as a high quality, service oriented company. No job is too big or too small. Call today!

"Henry was prompt, very knowledgeable and was extremely easy to work with and professional. I would recommend him for your plumbing needs"

Wendy P on December 2025


Avatar for Fito Plumbers, Inc.

Fito Plumbers, Inc.

4.94(
51
)
Approved Pro

Fito Plumbers, Inc.

4.94(
51
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
26 local quotes requested

Fito Plumbers is a family-owned and operated plumbing company which has been servicing the bay area for over 20 years. We serve both residential and commercial properties. We strive to provide the best customer service and support. Our teams consist of experienced and qualified service technicians which use high quality equipment and extensive knowledge to get any job done. Our goal is to provide outstanding services, quality, and put the customer first to complete the project. Our prices are very competitive and our service is superior. We take pride in what we do and the care we provide to our customers. Call us now!

"He was straightforward, honest I would trust him on any job."

Shane H on November 2025

Fito Plumbers is a family-owned and operated plumbing company which has been servicing the bay area for over 20 years. We serve both residential and commercial properties. We strive to provide the best customer service and support. Our teams consist of experienced and qualified service technicians which use high quality equipment and extensive knowledge to get any job done. Our goal is to provide outstanding services, quality, and put the customer first to complete the project. Our prices are very competitive and our service is superior. We take pride in what we do and the care we provide to our customers. Call us now!

"He was straightforward, honest I would trust him on any job."

Shane H on November 2025


Avatar for Oak Plumbing Inc

Oak Plumbing Inc

4.61(
90
)
Approved Pro

Oak Plumbing Inc

4.61(
90
)
Approved Pro
Super Service Award
Customers say: Super punctual
54 local quotes requested
9 years of experience

Oak Plumbing is a locally owned and operated plumbing company serving Solano, Marin & Contra Costa Counties. We provide options to prevent, repair, and maintain your water system to best fit your family’s needs. Our goal is to bring customer service back to the plumbing industry. We specialize in residential plumbing repair as well as preventative maintenance. We offer up-front pricing and also Pace financing to be able to service everyone equally. We want to fix the cause of the problem, not just the symptom. Safety is extremely important to us which is why all our technicians are fully trained, background checked, and drug tested.

"Excellent. Two employees did the job. Nice guys. Very polite and they were able to complete a complex job on time. I would definitely hire this company if I ever needed a plumber. The guy who sold us on the job was extremely knowledgeable which is why I selected this company."

Michael D on April 2025

Oak Plumbing is a locally owned and operated plumbing company serving Solano, Marin & Contra Costa Counties. We provide options to prevent, repair, and maintain your water system to best fit your family’s needs. Our goal is to bring customer service back to the plumbing industry. We specialize in residential plumbing repair as well as preventative maintenance. We offer up-front pricing and also Pace financing to be able to service everyone equally. We want to fix the cause of the problem, not just the symptom. Safety is extremely important to us which is why all our technicians are fully trained, background checked, and drug tested.

"Excellent. Two employees did the job. Nice guys. Very polite and they were able to complete a complex job on time. I would definitely hire this company if I ever needed a plumber. The guy who sold us on the job was extremely knowledgeable which is why I selected this company."

Michael D on April 2025


Avatar for Oak Plumbing

Oak Plumbing

4.63(
470
)
Approved Pro

Oak Plumbing

4.63(
470
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
145 local quotes requested

Oak Plumbing is 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. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"A troublesome shower drain was resolved quickly by Oak Plumbing. I want to recognize Niles, Harris, Jessy, and Amari for their great work. Niles inspected the crawlspace, measured every line, and gave me a fair quote based on my home’s actual layout. Harris cleared space for the new pipes, sketched the floor plan, and confirmed materials. Jessy and Amari replaced all horizontal drain lines—including the garage sink, washer, kitchen sink, two toilets, shower, and two sinks—in tough conditions under the house. This started after another company gave me a flat-fee quote based on “two bathrooms.” Oak Plumbing’s quote was more detailed and more accurate for my 1950s home with 1.5 baths and mixed old materials. Their bid was over 10% better, and I left a deposit that day. I’m grateful for how quickly they solved the problem, especially days before Thanksgiving. As a single mother who relies on Angie’s List, this experience fully met expectations. I highly recommend Oak Plumbing."

Geanie C on November 2025

Oak Plumbing is 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. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"A troublesome shower drain was resolved quickly by Oak Plumbing. I want to recognize Niles, Harris, Jessy, and Amari for their great work. Niles inspected the crawlspace, measured every line, and gave me a fair quote based on my home’s actual layout. Harris cleared space for the new pipes, sketched the floor plan, and confirmed materials. Jessy and Amari replaced all horizontal drain lines—including the garage sink, washer, kitchen sink, two toilets, shower, and two sinks—in tough conditions under the house. This started after another company gave me a flat-fee quote based on “two bathrooms.” Oak Plumbing’s quote was more detailed and more accurate for my 1950s home with 1.5 baths and mixed old materials. Their bid was over 10% better, and I left a deposit that day. I’m grateful for how quickly they solved the problem, especially days before Thanksgiving. As a single mother who relies on Angie’s List, this experience fully met expectations. I highly recommend Oak Plumbing."

Geanie C on November 2025


Avatar for In Demand Plumbing

In Demand Plumbing

4.94(
46
)
Approved Pro

In Demand Plumbing

4.94(
46
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
16 local quotes requested

Highest rated plumber Antioch CA. We can help with your water heater installation or repairs. We offer quality work, in a very professional manner, at a fair price. We take pride in our work and strive for perfection. We work on faucets, toilets, shower valves, water leaks, gas leaks, clogged sewer lines drain repair. We service Antioch, Brentwood, Oakley, Pittsburg and surrounding areas. Give

"Experienced technicians who take pride in their work."

Rex D on May 2023

Highest rated plumber Antioch CA. We can help with your water heater installation or repairs. We offer quality work, in a very professional manner, at a fair price. We take pride in our work and strive for perfection. We work on faucets, toilets, shower valves, water leaks, gas leaks, clogged sewer lines drain repair. We service Antioch, Brentwood, Oakley, Pittsburg and surrounding areas. Give

"Experienced technicians who take pride in their work."

Rex D on May 2023


Avatar for OCEAN PLUMBING

OCEAN PLUMBING

5.00(
4
)
Approved Pro

OCEAN PLUMBING

5.00(
4
)
Approved Pro
Super Service Award
13 years of experience
Free onsite estimate

Ocean Plumbing is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"He came in time, had all the parts, and was done in less than an hour. He was pleasant, respectful, gave me options, and priced the work fairly. "

Barry C on July 2025

Ocean Plumbing is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"He came in time, had all the parts, and was done in less than an hour. He was pleasant, respectful, gave me options, and priced the work fairly. "

Barry C on July 2025

...
Showing 1-10 of 1021
FAQs for water main install, replace or repair projects in Walnut Creek, CA

If you notice puddles or standing water in your yard, a sudden drop in water pressure, cracks forming in your foundation, frequent clogs in your plumbing fixtures, or water that looks or smells unusual, you might have a leak in your main water line. These signs mean it's time to call a professional to evaluate the issue and prevent further damage.

A professional water main inspection is a comprehensive evaluation performed by a licensed plumber who checks every section of your plumbing system. The inspection costs $165 and uses advanced diagnostic techniques to identify hidden leaks or wear. This service clarifies the exact condition of your water main, enabling precise repairs that prevent future damage and ensure the overall health of your plumbing system.

Protect your water main by scheduling a cleaning and inspection every two to five years. The average cost of a sewer line cleaning is $400. It’s also important to never dig in your yard without first calling the dig line (811) to ensure you don't accidentally hit the water or sewer lines. Watch for soil erosion, low water pressure, or wet spots in your yard, and take immediate action if you suspect a leak. Remember, the longer you leave it, the worse the problem gets and the more costly it is to fix.

When properly maintained, your water main is engineered to remain functional for 50 years or longer. A durable water service in excellent condition should consistently perform without major issues for half a century. In contrast, metal pipes exposed to acidic soil corrode faster, whereas modern plastic pipes resist corrosion and function for decades beyond metal alternatives. Regular maintenance and inspections are essential for confirming your system’s longevity.

No, homeowners insurance does not cover the cost to repair a water main. Insurers fund only sudden, unforeseen events like a burst pipe and exclude gradual issues or normal wear and tear. Damage resulting from leaks, such as mold remediation or property claims, is not covered. It is essential to contact your insurance provider immediately to confirm your policy’s details and any potential adjustments needed.

The Walnut Creek, 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.