When should I replace my water supply lines?

Author: Retha Hegmann  |  Last update: Sunday, September 28, 2025

To prevent unexpected water damage, follow these recommended replacement intervals: Braided Stainless Steel: Replace every 10 years. PVC: Replace every 5-8 years. Copper: While these can last up to 50 years, inspect regularly and replace if any signs of corrosion or damage are present.

How often should water supply lines be replaced?

While they are generally durable and long-lasting, it is recommended to replace them every 5-7 years as a preventative measure to avoid potential leaks or bursts. It's important to regularly inspect braided water lines for any signs of wear or damage and replace them immediately if any issues are found.

Does my water line need to be replaced?

Water Pressure Issues – If you notice that your showers are of inconsistent water flow and temperature, you may be experiencing low water pressure. This could also be a sign of problems with your main water line. Water Stains on Ceilings or Walls – These are red flags that there is a leaky pipe that needs replacement.

How often do exterior water lines need to be replaced?

Q: How long does a main water line usually last before it needs replacing? Copper lines can last over 50 years, while polyvinyl chloride (PVC) pipes may have a shorter lifespan. Environmental factors and maintenance quality play significant roles.

Does homeowners insurance cover an exterior water line?

Does homeowners insurance cover water line breaks? Most homeowners insurance policies will not cover water line breaks unless a line has undergone sudden, significant damage. For example, if you dig in your yard and accidentally damage the water line running from your meter, repairs and cleanup may be covered.

Supply Line Sizes for Toilet and Faucet

How much does it cost to replace a water supply line?

Main water line replacement costs an average of $1,713 but ranges from $646 to $2,824, depending on the length and depth of the line, materials, and method.

Do water supply lines go bad?

The Lifespan of a Water Line

Typically, main water line pipes last decades. Some experts estimate that they last around 70 years, though this can vary from development to development. If your home is considerably dated–if it was built in or before the 1950s or even the 1980s–you should have its water line inspected.

Can I replace my main water line by myself?

Perhaps the water pressure in your house isn't great or your water supply isn't healthy. If you find yourself in either of these situations, know that it is possible to replace a water main – the main pipe that supplies your water – entirely by yourself. You can also save yourself a lot of money in the process.

Who is responsible for the water line from street to house?

Who is Responsible for the Water Line From the Street to Your House? Water service lines within the bounds of your property are considered your personal responsibility to maintain, while public water pipes outside of private property lines are the city's responsibility.

What is the most common water supply line?

A rigid copper pipe is typically used for water supply lines, while flexible copper pipes are used in tight spaces where malleable copper can bend. Copper pipes are resistant to corrosion, durable enough for hot and cold temperatures. It is more expensive than alternatives like PVC or PEX.

When should I replace my house water pipes?

Look for the following to help you determine if you need professional pipe replacement:
  1. Cracks. Cracks in your plumbing pipes are usually simple to spot. ...
  2. Leaks. While cracks in your pipes lead to leaks, they are not the only culprit. ...
  3. Low Water Pressure. ...
  4. Yellow or Brown Tinted Water. ...
  5. 24/7 Emergency Service.

Should you replace supply lines?

We recommend changing braided supply lines every 10 years to avoid injuries such as those sustained by the appliance service technician as well as to protect your home and other property from water damage. If you are unsure of how old your supply lines are or how to replace them, RMS can help.

How long do exterior water lines last?

Following are some average lifespans from the US Department of Housing and Urban Development for the different types of metals used for main water lines: Brass – 40-70 years. Copper – 50 years. Galvanized steel – 20-50 years.

How do you know if pipes need to be replaced?

How to Tell You Need to Replace the Pipes
  1. Discolored water.
  2. Leaks.
  3. Slow drainage.
  4. Frequent plumbing backups.
  5. Mold in your home.
  6. Sewer gas odor.
  7. Very green lawn (sewage backups)
  8. Dramatic fluctuations in water temperature.

Does homeowners insurance cover main water line?

Understand your insurance coverage: A standard homeowners policy typically does not include insurance for water service line breaks and subsequent damage.

What is the difference between a water line and a water main?

Large-diameter pipes supply water for an entire town or city, which are called distribution mains. Typically taps for service lines are not permitted on distribution mains. The smaller branch water pipes supplying individual buildings are known as water service lines.

How much does it cost to replace a main water line shut off valve?

The average cost to replace a main water shut-off valve is $500, but most homeowners pay between $375 and $600 depending on the valve type, material, and whether trenching is involved. The cost can reach as high as $800 for stainless steel valves that require a trench.

How long do supply lines last?

The general rule of thumb is to replace all your supply line hoses every 5 years as a preventative measure to protect your home against any potential leaks. But since braided supply lines have a rubber core, we recommend that they can be replaced every 10 years.

How do you test a new water line?

Shut Off the Main Water Supply: Close the valve that controls your home's water, ensuring no water flows through the pipes during the test. Install the Pressure Gauge: Attach a pressure gauge to the system, usually at the faucet or shower valve. Use plumber's tape to ensure a tight seal and prevent air leaks.

Can you use old supply lines with a new faucet?

You may need to obtain an adapter in order to connect your new faucet to your pre-existing supply lines or shut-off valves.

How long does it take to replace a water line?

The crew then performs the necessary repairs and replacements. Once the pipe is in working order, they will flush it before reconnecting it to the plumbing system to ensure it is ready to go. How much time will it take for the repair? On average, the main water line repair will take between four and eight hours.

Who pays for water line repair?

If these are damaged or break, the homeowner might be responsible for the repair. A standard homeowners policy does not cover the service lines running into the home—unless you've added service line coverage.

Can you replace a water line without digging?

Trenchless water line replacement is a technique that allows plumbers to replace old or damaged water lines without having to dig trenches in your yard. With trenchless replacement, you can have your water line repaired in a matter of hours, which means less disruption to your daily routine.

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