Install or Replace a Water Main Cost in San Antonio, TX in 2026
Most Install or Replace a Water Main projects in San Antonio, TX cost between $800 and $16,000. The typical price is $3,900.
San Antonio prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
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 Antonio, TX
Businesses listed on Google near San Antonio, TX. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
1st Call Plumbing & AC
4.9(2,076 reviews)
5511 Brewster St, San Antonio, TX 78233
Big City Plumbing, LLC
5.0(1,272 reviews)
4274 GateCrest, San Antonio, TX 78217
PlumbSmart
4.9(1,083 reviews)
1233 Safari, San Antonio, TX 78216
Roadrunner Plumbing & Air
4.9(743 reviews)
4706 College Park, San Antonio, TX 78249
George Plumbing Co.
4.9(686 reviews)
12 Burwood Ln, San Antonio, TX 78216
o5 Plumbing, LLC
5.0(482 reviews)
10801 Nacogdoches Rd, San Antonio, TX 78217