Install or Replace a Water Main Cost in Boulder, CO in 2026
Most Install or Replace a Water Main projects in Boulder, CO cost between $850 and $17,000. The typical price is $4,100.
Labour and materials in Boulder run about 7% 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 Boulder, CO
Businesses listed on Google near Boulder, CO. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Mesa Plumbing, Heating and Cooling
4.7(751 reviews)
1740 38th St, Boulder, CO 80301
Flatirons Plumbing
4.8(643 reviews)
1111 Spruce St #404B, Boulder, CO 80302
Bernie's Plumbing & Heating Company
4.9(448 reviews)
1501 Lee Hill Dr, Boulder, CO 80304
Planet Plumbing & Drain
4.6(469 reviews)
729 Walnut St Ste d-4, Boulder, CO 80302
Canyon Plumbing & Heating, Inc
4.9(290 reviews)
4700 Sterling Dr Ste G, Boulder, CO 80301
Mesa Drain Cleaning & Sewer Repair
4.8(279 reviews)
3050 Broadway Ste 311, Boulder, CO 80304