Plumbing cost guide

Main Water Line Replacement Cost in 2026: Supply Line Benchmark

Typical 2026 main water line replacement costs: $1,800 to $4,500 typical range ($2,950 national average, $50–$150/linear ft). Compare trenchless directional boring, copper vs PEX, and lead pipe swaps.

Cost Snapshot

$1,800 – $4,500

Typical planning range based on the published references reviewed for this guide.

Use this estimate to prepare questions and compare written, itemized contractor proposals. Actual costs vary with project scope, materials, access, permits, and local conditions.