Replacing a main water line costs a national average of $1,702, with most homeowners paying $647 to $2,834, per Angi’s 2026 data.1 HomeAdvisor publishes the same average and range — the two are corporate siblings, and matching figures alone don’t establish independent corroboration.2 Other sources price the job higher: HomeGuide puts the national average at $3,500 with a $2,000 to $5,000 average range, and Fixr at $3,750 with a $1,500 to $12,000 range — published figures roughly double Angi’s, not reconciled by the sources.3,5 Today’s Homeowner publishes a $1,713 national average, a near-match to Angi’s reported as published.4 Figures below are the latest published national figures* from each source.
*National figures, not local quotes. Angi was updated October 14, 2026; HomeAdvisor was updated June 19, 2026; HomeGuide was updated December 22, 2025; Today’s Homeowner was updated May 22, 2025; Fixr was updated August 29, 2025. Your price depends on line length and depth, soil and access, pipe material, replacement method, and local labor.
$1,702
national average (Angi, 2026)
$647 – $2,834
typical range (Angi, HomeAdvisor)
$3,500
national average (HomeGuide)
$3,750
national average (Fixr)
What sources say
| Source | Figure | Scope |
|---|---|---|
| Angi | $1,702 national average; $647 – $2,834 typical; $200 – $5,000 full spread; $50 – $150 per lin. ft. (up to $250) | Water main replacement guide (2026 data, updated October 14, 2026) |
| HomeAdvisor | $1,702 average; $647 – $2,834 normal range; as low as $200, as high as $5,000 | Water main replacement guide (updated June 19, 2026) |
| HomeGuide | $3,500 national average; $2,000 – $5,000 average range; $620 minimum, $12,500 maximum | Water line replacement guide (updated December 22, 2025) |
| Today’s Homeowner | $1,713 national average; $200 low to $10,000+ high (page header shows $1,200 – $10,000) | Water line replacement guide (updated May 22, 2025) |
| Fixr | $3,750 national average (25-ft. galvanized, trenchless); $1,500 – $12,000 range; $1,125 low, $22,500 high | Main water line installation guide (updated August 29, 2025) |
Angi and HomeAdvisor are corporate siblings and publish the same average and range — matching figures alone don’t establish independent corroboration.1,2 Today’s Homeowner’s $1,713 average is a near-match to Angi’s reported as published, and its own page header ($1,200 to $10,000) differs from its low/high table ($200 to $10,000+), figures the page does not reconcile.4 HomeGuide and Fixr stand roughly double the Angi/HA average, unreconciled; Fixr anchors its average to a specific project (25 feet of galvanized pipe, trenchless).3,5
Trenchless versus trenched, per linear foot
| Method (per lin. ft.) | Angi | HomeAdvisor | HomeGuide | Today’s Homeowner | Fixr |
|---|---|---|---|---|---|
| Trenchless | $75 – $150 | $75 – $150 | $70 – $250 | $50 – $200 | $75 – $225 overall (most pay $100 – $200) |
| Trenched | $1,500 – $13,000 project total | $50 – $250 | $50 – $200 | $50 – $250 | $175 – $225 dig and backfill only |
The published ranges overlap and point in opposite directions: HomeGuide’s trenchless endpoints ($70 to $250) sit above its trenched range ($50 to $200), while Today’s Homeowner’s trenched upper endpoint ($250) sits above its trenchless upper endpoint ($200). Overlapping ranges like these do not establish which method costs more for a comparable project, and the sources do not provide like-for-like comparisons.3,4 Angi and HomeAdvisor publish the same trenchless range ($75 to $150); Angi’s trenched figure is a project total rather than a per-foot rate, a different unit from the other columns.1,2 Angi also breaks trenchless into pipe lining at $75 to $150 per foot and pipe bursting at $50 to $200 per foot.1
Pipe material costs, per linear foot (materials only)
| Material | Angi | HomeAdvisor | Today’s Homeowner | HomeGuide | Fixr |
|---|---|---|---|---|---|
| PVC | $0.50 – $5 | $0.40 – $2 | $0.50 – $5 | $0.50 – $5 | $0.50 – $5 |
| PEX / polyethylene | $0.40 – $2 | — | $0.40 – $2 | $0.50 – $5 | $2 – $5 |
| Copper | $2 – $10 | $2 – $10 | $2 – $10 | $2 – $10+ | $20 – $30 |
| Cast iron | — | $2 – $10 | $2 – $10 | $2 – $10 | $2 – $10 |
| Fiberglass / FRP | $5 – $10 | $5 – $10 | $5 – $10 | $6 – $13 | $6 – $10 |
| Brass | — | — | — | — | $10 – $15 |
Two disagreements stand out: Fixr’s copper range ($20 to $30 per foot) stands apart from the $2 to $10 published by the other sources (HomeGuide adds a plus sign), and HomeAdvisor’s PVC range ($0.40 to $2) matches the range its sibling Angi publishes for PEX, not Angi’s PVC range ($0.50 to $5) — the pages do not reconcile which material that range belongs to.1,2,5 Today’s Homeowner’s own prose prices PVC at 50 cents to $2 per foot while its table shows $0.50 to $5, an internal variance the page does not reconcile.4
Related costs and add-ons
| Item | Angi | HomeAdvisor | HomeGuide | Fixr |
|---|---|---|---|---|
| Permit | $100 – $500 | $100 – $500 (some cities free) | $30 – $500 | $50 – $400 |
| Inspection | $100 – $500 table; $150 – $500 prose | $150 – $500 | $100 – $200+ | — |
| Shut-off valve replacement | $300 – $1,000 table; $400 – $800+ prose | — | $250 – $600 | $200 – $1,000 |
| Pressure regulator | — | — | $150 – $350 | $250 – $400 |
| Landscaping restoration | $3,500 table; $3,700 prose | — | $50 – $100 per hour | — |
| Street-to-house service line | up to $2,500 private main | adds up to $2,500 | — | — |
| Repair instead of replace | — | $350 – $1,700 | $400 – $1,500 | — |
| Moving the line | — | — | — | $100 – $250 per lin. ft. |
Angi’s page carries several internal variances reported as published: its inspection figure is $100 to $500 in the add-on table but $150 to $500 in prose, its landscaping figure is $3,500 in the table but $3,700 in prose, and its shut-off valve range is $300 to $1,000 in the table but $400 to $800 or more in prose.1 Connecting to the city main is the big swing item: Angi lists $1,500 to $13,000 in its add-on table and $1,500 to $12,000 in prose for running a line from the property edge to the city pipes.1 Whether a permit or inspection is required for a given job is a local requirement — the figures above are the published cost ranges for them; confirm what applies with the plumber or the municipality before work starts.
Labor and DIY
Plumber hourly rates differ by source: HomeAdvisor publishes $45 to $200 per hour (and $50 to $150 for a general contractor), HomeGuide $45 to $150, and Fixr $75 to $150 with a typical labor total of $70 to $200 on the average job.2,3,5 Fixr prices interior water line runs at $65 to $5,000 depending on length and location.5 None of the five sources presents a DIY route for the replacement itself: Today’s Homeowner states it is not a DIY job, citing excavation, permits, and work around other underground utilities, and Angi warns that DIY mistakes can lead to leaks and yard or home damage.1,4
Related guides
Main Water Line Repair Cost
Cost to Repipe a House: $1,500 to $15,000 (2026 Guide)
Slab Leak Repair Cost: $630 to $4,400 (2026 Guide)
Drain repair cost
Repipe Cost
Refrigerator Water Line Installation Cost
Water Heater Installation Cost
All cost guides
Sources
1. Angi — How Much Does Main Water Line Replacement Cost? (2026 data, updated October 14, 2026)
2. HomeAdvisor — How Much Does It Cost to Replace a Main Water Line? (updated June 19, 2026)
3. HomeGuide — How Much Does Water Line Replacement Cost? (updated December 22, 2025)
4. Today’s Homeowner — How Much Does Water Line Replacement Cost? (updated May 22, 2025)
5. Fixr — Main Water Line Installation Cost (updated August 29, 2025)