Install or Replace a Water Main Cost in Sammamish, WA in 2026
Most Install or Replace a Water Main projects in Sammamish, WA cost between $875 and $17,500. The typical price is $4,200.
Labour and materials in Sammamish run about 13% 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 Sammamish, WA
Businesses listed on Google near Sammamish, WA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Noble Plumbing, Heating & Cooling
5.0(134 reviews)
75 Front St S, Issaquah, WA 98027
Companion Plumbing & Heating
5.0(92 reviews)
3019 252nd Pl SE, Sammamish, WA 98075
Eastside Plumbing, Sewer, Septic, Electric, Heating & Air - Issaquah
4.9(97 reviews)
55 1st Ave NW, Issaquah, WA 98027
Plumberjack's Plumbing
5.0(50 reviews)
2202 238th Ave SE, Sammamish, WA 98075
Driscoll Plumbing
4.4(28 reviews)
24032 SE 21st St, Sammamish, WA 98075
ClearFlow Plumbing & Drains Sammamish
5.0(10 reviews)
709 228th Ave NE Ste b, Sammamish, WA 98074