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Find Water main install, replace or repairers in Napa

Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
101
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Oak called 2nd but came next day/ UN-prepared to do either repair or water test (requested on phone) or even replace with ready new ADA toilet that the lying receptionist booker said they have “some in stock and if not he will show a catalog of choices”. Guy came punctually with Nzo tools or appliances Or knowledge of what I asked for as an “URGENT repair/replace”. See ABC review same call. Not quite as bad as them doing same since we also still have broken HVAC too, both said they would fix ( I bought gasket already, they could have put in) or replace if they brought new toilet. Problem is not in water pipes except they need testing for lead - both said they would do this too - when I asked oak re taking a sample, how long sitting in pipes? He wiped off his soda water bottle and asked “which pipes?” !!"
Response time2 days
7 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Beastbay Plumbing
Beastbay Plumbing
4.5(
218
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"We chose BeastBay Plumbing for a complete home repipe after meeting with several companies. Ron Buris and Jovon were professional and promised great service, which is why we hired them. I requested the work be permitted. The crew worked hard, but cleanup could have been better. Unfortunately, the day after the job was completed, a newly installed pipe behind our chimney leaked, soaking our brick fireplace. They repaired it, but it leaked again a couple of days later, causing more water damage. We had to shut off our water and went without water until Monday because no technician was available Sunday. I was told someone would bring fans to dry the area, but no one came, so I rented them myself. The city later failed the inspection, requiring additional corrections. We paid quite a bit for this project. After final payment, communication became very poor. I expected better follow-up and accountability for a job of this size."
Tankless Water Heater
Tankless water heater
Tankless and Water Filtration
Noritz Tankless
tub/shower enclosure

+22

Response time6 hrs
Response rate91%
265 neighbors recently requested a quote
Avatar for Moore Home Services
Moore Home Services
4.4(
225
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Starting with JP the senior technician, the inspection and documentation of existing conditions was thorough, knowledgeable, and complete. Moore recommended the replacement system that would be more durable and require lower maintenance over time, and wrote a detailed proposal with a floor plan documentation. We were given financing options at the time of signing the agreement, as well. The team- five technicians!- were properly suited with protective gear and followed COVID protocols at all times on our property, inside and out. They wore shoe protectors while inside, kept us fully appraised at every task (all interior registers replaced in 11 rooms), and were extremely respectful of our space, privacy, pets, and kept noise and speaking to low levels. (our extremely friendly indoor cat got lots of attention from the team!) The work required three days to fully replace all ductwork in a two-story home with attic and crawl space, and Paul the team leader would check in with us each morning with a briefing of each days' activities. The entire team was constantly in learning mode, with the senior technicians mentoring and teaching the younger team members, which greatly impressed me. They finished on time and without any delay or disruption; they cleaned each work area and removed all debris, packaging, and the old system. We've owned this house for 20 years, had many repairs and replacements, and Moore has raised the bar so far for quality and value. While they were the middle bid in terms of overall cost, we believe we received higher value that even the highest bid. I can strongly recommend them to anyone planning repair work on their existing system, new installations, or maintenance. After getting few responses from HVAC contractors working in new homes in Sonoma County, we were pleased to know that Moore specializes in existing homes and responded to our online request within minutes. I'd be happy to share my experience in person, if required. Martin Waldron Sebastopol, CA"
After 1
 View 1
 Right Side View
Perfect Retrofit
After 2

+15

20 neighbors recently requested a quote
Recommended by98%of homeowners
JOHN MOUNTAIN
5.0(
7
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"I cannot say enough about how good this experience with John Mountain/Mountain Engineering has been. They said it would be 3 weeks; anti was. The work was painstakingly done, including a French drain behind the wall. And they replaced the plants that were destroyed during the process, which was an unexpected bonus."
Response time10 hrs
11 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Top Dog Plumbing and Rooter LLC
Top Dog Plumbing and Rooter LLC
5.0(
8
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I needed a tankless water heater in an attic troubleshot, as a plumber myself I could not figure out why a brand new water heater kept turning off. James within seconds figured out issue. Thanks to James I can breath again."
Sewer main
Sewer main
Sewer main
Sewer main
Sewer main

+3

14 neighbors recently requested a quote
Avatar for Gray Plumbing, Inc.
Gray Plumbing, Inc.
4.3(
6
)
Water Main - Install, Replace or Repair

Serving Napa, CA and surrounding areas

Approved

In business since 2016

Small jobs welcome

Credit card accepted

"Michael Smith gave us a very excellent service. Weâ re so happy to have him fix our big problem with the water leak infront of our house. He has really a great knowledge and the best quick service performance.. We truly appreciate your help. More power to the company!"
Installation Complete
Old Kitchen Faucet
Tankless Water Heater
Water Heater Before
Dual Rinal tankless water heater

+15

Response time1 day
Response rate100%
88 neighbors recently requested a quote
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FAQs for water main install, replace or repair projects in Napa, 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 Napa, 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.