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Top-Rated Water main install, replace or repairers in San Luis Obispo - Updated Nov 2026

Avatar for 4G's Plumbing
4G's Plumbing
4.7(
36
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"The job was done well. The repairman was very nice. He completed the work in a timely manner and left the bathroom spotless. I have already recommended 4G’s Plumbing to the Manager of my Mobile home park and my next door neighbor. I will definitely use this company for any future plumbing needs"
Logo
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13 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Wighton's Electric, Plumbing, Heating, and Air
Wighton's Electric, Plumbing, Heating, and Air
4.4(
80
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1953

Free estimates

Emergency services offered

"The Wighton's team did a very professional, thorough job. They were very prompt and courteous. They kept everything very clean. The units that they installed work beyond my expectations. I'm very please with the service I received, and would not hesitate to hire them again."
Install brand new, high efficiency units with mount.
Installing brand new and high efficiency units
Install brand new, high efficiency units with mount.
Installing brand new and high efficiency units
Installing brand new and high efficiency units

+14

Response time1 day
Response rate100%
31 neighbors recently requested a quote
Avatar for PAYTON'S PLUMBING
PAYTON'S PLUMBING
5.0(
6
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Tyler of Payton’s Plumbing did a fantastic job. He did what he said he would do promptly and efficiently. We would highly recommend him. Yesterday we had a leaking water heater and today we have a new water heater. Couldn’t ask for better service at a reasonable price."
Response time11 hrs
Response rate90%
Recommended by20%of homeowners
On site plumbing & septic
4.5(
8
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

In Business Since 2024\nPAYTON'S PLUMBING 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.\n\nC-36 Plumbing\n#: 1125955\nEXP: 9/30/2026

2 neighbors recently requested a quote
Recommended by28%of homeowners
Avatar for Lorenzo's Plumbing
Lorenzo's Plumbing
5.0(
5
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

Approved

In business since 2022

It started like most great things do with hard work, big dreams, and a whole lot of heart.\n\nAt Lorenzo’s, we’re proud to offer professional plumbing services with that extra touch only a family-run business can bring.\n\nWe believe in showing up on time, doing the job right, and treating every home like our own. Whether it’s a small repair or a big install, we’re here to make things easier for you honest service, no shortcuts.\n\nThis isn’t just our business. It’s our name, our legacy, and our way of helping the community we love.

Project Photos
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Water Main - Install, Replace or Repair

Serving San Luis Obispo, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Mega Power Electric is an excellent company to work with. Gary and his team are knowledgeable, honest, and will go out of their way to get the job done right. We installed panels and solar battery storage unit in our home and we're reaping the benefits of being clean and green."
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Additional Photos

+32

Recommended by100%of homeowners
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FAQs for water main install, replace or repair projects in San Luis Obispo, 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 San Luis Obispo, 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.