How Much Does Water Line Replacement Cost? – Forbes Home

Water lines use a variety of materials, including PVC, cast iron, polyethylene, copper, and fiberglass. Which type your contractor recommends will depend not only on price, but also on factors such as the unique needs of your city, the climate of your location, and the type of soil in your yard. All of these factors can affect your home's water lines. Below is a cost breakdown and brief description of each water line type, as well as the cost to install an underground water line per foot by type.

made of PVC

PVC costs between $0.50 and $5 per linear footThis durable plastic material works well in highly acidic soils such as those found in the Pacific Northwest, but is not suitable for extremely hot or cold climates.

Polyethylen

Polyethylene costs between $2 and $5 per running foot. A popular choice for nearly any climate, this flexible material is corrosion resistant but can incur higher installation costs because it requires labor to roll it out flat.

cast iron

Cast iron costs between $2 and $10 per running foot. A much less popular choice these days, but often found in older homes. Cast iron is not affected by soil type or temperature, but can easily corrode or be destroyed by tree roots.

copper

Copper costs between $20 and $30 per linear foot. Copper pipes are extremely durable, resistant to damage from tree roots, and can be used in any temperature. The only disadvantage of copper pipes is that they can corrode if used in soils with high pH.

glass fiber

Fiberglass costs between $6 and $10 per running footThis durable option is not affected by temperatures or soil types, but is best suited for use on short water lines as it is available in short lengths.

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