Install or Replace a Water Main Cost in San Diego, CA in 2026
Most Install or Replace a Water Main projects in San Diego, CA cost between $1,000 and $20,000. The typical price is $4,800.
Labour and materials in San Diego run about 29% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Accessible fixture swap versus opening walls or slab
- Pipe material — copper, PEX or cast iron replacement
- Emergency versus scheduled work
- Permit and inspection requirements
Usually included
- Licensed plumber labour
- Pipe, fittings and standard fixtures
Usually extra
- Drywall and finish repair
- Fixtures you supply
- Municipal tap or sewer connection fees
Plumbers in San Diego, CA
Businesses listed on Google near San Diego, CA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Anderson Plumbing, Heating & Air
4.8(6,409 reviews)
5183 Mercury Point, San Diego, CA 92111
Bill Howe Plumbing, Heating & Air, Restoration & Flood Services
4.8(5,903 reviews)
9210 Sky Park Ct, San Diego, CA 92123
Black Mountain Plumbing
4.8(1,653 reviews)
9909 Hibert St Ste E, San Diego, CA 92131
Courtesy Plumbing Inc.
5.0(1,187 reviews)
7950 Silverton Ave Unit 113, San Diego, CA 92126
Core Plumbing
4.8(1,407 reviews)
7292 Opportunity Rd b, San Diego, CA 92111
Exodus Plumbing, Inc
4.9(705 reviews)
3553 Clairemont Mesa Blvd, San Diego, CA 92117