Constant access to fresh water is a necessity. It is a major need in the house. Your house takes fresh water from the main water lines. Then supply this water to every aspect of your home including the kitchen, bathroom, laundry, and every tap.
If you are installing a new water line in your new home, or replacing your main water line, it is necessary to estimate the budget before starting the project. The cost to install the main water line depends upon many factors. This can include the size of the water line, material of pipes, number of pipes, and labor cost.
Average Cost to Install Main Water Line
The average cost to install a main water line can vary between $1,500 and $12,000. In the US, the standard main water line consists of 25 feet. It can cost you around $4,050 made of galvanized steel using a trenchless installation which is a standard choice. If your water line is shorter than 25 feet, you could pay as little as $1,125.
However, this is just a rough estimate. The total cost will depend on multiple factors. These factors include the type and material of pipes, the size of the water line, and labor costs.
Type of Installation of Main Water Line
When installing the main water line, there are two methods to use. One is Trenched and the other is Trenchless. Each method has its own benefits and disadvantages. They both also differ in terms of their costs. It is better to understand both to choose the best according to your needs.
- Trenched
- Trenchless
Trenched Main Water Line
The trench technique includes digging a long trench to lay the water line. This traditional technique can be less expensive but requires digging up your backyard, driveway, or sidewalk. The price usually relies upon the length of the trench, the type of soil, and any barriers like trees or rocks. Keep in mind, that while it’s less expensive, you may spend more on restoring the landscape after the work is done.
Cost: Trenched installation can cost around $50-$200 per linear foot. However, for 25 feet long water line, it will range between $1,250-$5,000.
Trenchless Main Water Line
The trenchless method is a more recent technique that avoids the need for a huge trench. Instead, small entry and exit holes are made. Special tools are used to put the water line underground. This approach is much less disruptive, so your yard remains the way it is.
However, it tends to cost more than the trenched method. Because it requires specialized equipment and expertise. Despite the expense, many house owners decide upon trenchless due to the minimal mess and quicker installation time.
Cost: It will cost around $70-$250 per linear foot and $1,750-$6,250 for 25 feet long water line.
Cost to Install Main Water Line by Material
When replacing a main water line, the material you choose can affect both the cost and durability. Let’s look at the common materials used and their pros and cons.
- PVC
- Polyethylene
- Cast Iron
- Copper
- Fiberglass
PVC
PVC is one of the most affordable options. It is light weight, easy to install, and resistant to corrosion. However, it won’t remain strong in intense weather or under heavy pressure. It is a good choice if you’re on a low budget.
Polyethylene
Polyethylene pipes are flexible and less likely to crack. They’re also resistant to corrosion and freezing. These pipes usually cost more than PVC. However provides more durability, especially in cold climates.
Cast Iron
Cast iron is a strong, heavy-duty material. It is also a durable option like PVC. While it lasts a long term, it can corrode through the years. Its installation is difficult. So, it is not widely used.
Copper
Copper pipes are durable and resistant to bacteria, making them a preferable choice. They’re more expensive than PVC and polyethylene. But they provide excellent longevity.
Fiberglass
Fiberglass pipes are light-weight and resistant to corrosion. They are less common and normally cost more than PVC. Fiberglass pipes are strong however can be brittle. They may be difficult to install in some situations.
Material |
COST per liner foot |
COST 25 feet |
| PVC | $10-$20 | $250-$500 |
| Polyethylene | $15-$25 | $375-$625 |
| Cast Iron | $30-$40 | $750-$1,000 |
| Copper | $50-$60 | $1,250-$1,500 |
| Fiberglass | $40-$50 | $1,000-$1,250 |
Cost Factors
FACTOR |
COST per linear ft |
COST 25 feet |
| Material | $10 to $50 | $250 to $1,250 |
| Type of installation | $50 to $250 | $1,200 to $6,500 |
| Labor cost | $10 to $30 | $500-$1,500 |
Replacing the Main Water Line
Replacing an old water line in your house can cost more than installing a new one. This is because it additionally includes the cost of removing the old water line and all pipes. It requires more labor and time.
Replacing the main water line can cost you around $3,000 to $18,000 in total. For 25 feet long water line, it can be $3,000 to $4,000. It includes all the material and labor costs.
Conclusion
The average cost to install a main water line can vary between $1,500 and $12,000. In the US, the standard main water line consists of 25 feet. It can cost you around $4,050 made of galvanized steel using a trenchless installation which is a standard choice. If your water line is shorter than 25 feet, you could pay as little as $1,125.
However, this is just a rough estimate. It is recommended to get quotes from multiple contractors or plumbers. They will give you a more accurate budget according to your requirements. You can also use cost estimating software to calculate the average cost yourself.
FAQs
Q1. Water line installation cost per foot?
You can expect to pay anywhere from $10 to $60 per foot.
Q2. 8″ water main installation cost per foot?
The cost can range from $30 to $80 per foot for an 8″ water main installation.
Q3. Underground water line repair cost?
Underground water line repair costs can take between $500 to $3,000 or more.
Q3. How much does it cost to run new water lines in a house?
You can expect to pay anywhere from $1,000 to $5,000 or more for new water line installation.
Q4. Cost to run water line 500 feet?
The cost to run water line 500 feet is $5,000 to $30,000.
