What is the best water lines for a house?

Author: Prof. Vinnie Lemke I  |  Last update: Wednesday, June 25, 2025

Copper and PEX are the most common pipe materials used in homes. Copper pipes are durable, corrosion-resistant, and can be used for hot and cold water. PEX seems to be replacing copper pipes at a high rate since it is less expensive, more flexible, and easier to install.

What is the best water line to use in a house?

For residential plumbing, PEX piping is one of the best options due to its flexibility, durability, and resistance to freezing. It's also easier to install than traditional materials like copper, making it a cost-effective choice for both new construction and renovations.

Is it better to repipe a house with PEX or copper?

PEX itself is stronger and arguably superior to copper in terms of reliability, especially in resistance to freezing. It's the fittings that have been problematic in the past.

Is PEX or PVC better for main water line?

PEX is often the better choice for residential plumbing due to its flexibility, durability, and resistance to freezing, reducing the need for fittings and minimizing leak risks. Its ease of installation and long-term reliability generally make it a more practical option over CPVC for most homes.

Which pipe is best for house water supply?

CPVC plumbing pipes are widely used in homes as they are highly durable and can resist high temperatures. CPVC does not conduct electricity, making it a safer option for your home than copper. The easy installation of CPVC makes it best for home projects.

PEX vs COPPER vs CPVC plumbing pipes

Is PEX ok for drinking water?

Is PEX safe for drinking water? Yes, our PEX-a and PEX-b are both safe for drinking water. Our piping system solutions are all third-party tested through IAPMO or NSF to the following standards: NSF/ANSI 61 drinking water systems components - health effects.

What type of pipe is not recommended for water line?

PVC is most commonly used for drain, waste, and vent lines. It is not recommended for use in potable water lines because it can leach chemicals into the water.

What are the disadvantages of PEX pipe?

PEX piping has a maximum bend radius, which can lead to stress on the pipe caused by improper installation. In addition, extreme bends and kinks place a very high local stress on the wall of the pipe, making it more susceptible to oxidative degradation.

What kind of water line from well to house?

Well water lines transport water from your well to your home. The standard size ranges from 3/4 inch to 1 inch in diameter. Size depends on factors like well depth, pump capacity, and regulations. Common pipe materials are PVC, polyethylene, cast iron, fiberglass, and copper.

What lasts longer, PEX or PVC?

Longevity. In the right conditions, PVC pipes can last upwards of 70 years. Both ABS and PEX pipes have about 40-50 years of life.

Why do plumbers not use copper anymore?

It has become expensive, can still corrode based on pH levels of water, and in cold climates, frozen water can cause copper pipes to burst.

Is there a lawsuit against PEX pipe?

PEX Pipe Class Action Lawsuits

A number of manufacturers, including Uponor, Viega, Nibco and Zurn, have already been sued over their PEX piping products.

How long will PEX plumbing last?

PEX: Due to its flexibility and durability, PEX piping should last at least 50 years. PVC / CPVC: Under typical conditions, these pipes should last up to 100 years. Keep in mind that PVC pipes are often used for drainage because extreme heat can damage them.

What is the longest lasting water pipe?

If it doesn't get damaged, PVC pipes will last forever. If you have high water pressure, PVC pipe is the best option. It's often used for the home's main water supply line for this reason. It's also a lightweight material that's much easier to work with than galvanized steel or copper.

Can PEX pipes freeze and burst?

Key Takeaways. All PEX pipes are flexible and can expand in high-pressure, freezing conditions. PEX pipe is more durable than rigid pipe in cold weather but is still susceptible to burst in extreme conditions.

What is the standard water line to a house?

Generally speaking, the main pipeline from the street to your home is either ¾ or 1 inch in diameter. Supply pipes are ¾ inch in diameter and individual components are ½ inch in diameter.

What is the best pipe for the water main to the house?

Polyvinyl Chloride (PVC) Pipe PVC pipes are widely used in new water main connections. However, PVC is one of the oldest synthetic material in use for many other applications. PVC is thermoplastic and can be softened and molded. This means that PVC pipes are ideal for trenchless construction and installation.

How much does it cost to replace a water line from a well to a house?

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. A plumber can assess your project.

What size pex from well to house?

If your water supply line is up to 250 feet, the 3/9″ PEX pipe is already suitable to grant sufficient water pressure. Meanwhile, for a 350-feet line, the 1/2″ tubes are the best fitting, and for a 500-feet line, a 3/4″ PEX piping will perform much better.

Why do plumbers not like PEX?

Material Concerns: One of the primary concerns about Pex plumbing is the material itself. While Pex pipes are undoubtedly flexible, making them easier to install in tight spaces, they are not as durable as traditional materials like copper or even PVC.

Why is PEX banned in California?

Currently, PEX plumbing is one of the most widely used plumbing systems around the world. It was temporarily banned in California for a while due to concerns about toxic materials but this was later disproven by laboratory tests.

Will mice eat PEX pipe?

PEX Pipe Is Vulnerable

Rodents Chewing Through PEX Pipe is a common problem in our area. It doesn't matter how old your home is, if you have an attic, you need to watch for rodent damage to PEX Pipe or PVC. If you're hearing rustling noises coming from the attic, it's time to do an inspection.

What are the bad types of water lines?

Today, copper and PEX are considered the best types of pipes for residential plumbing, and your insurance provider will love you for having them. On the other hand, PVC is less favored while Galvanized is considered one of the worst types.

What are the safest water lines?

Copper pipes with lead-free joint materials are the best choice for water pipes. They are long-lasting and won't leach chemicals into your drinking water.

What pipes to avoid?

Polybutylene, Galvanized Steel, and Lead Piping: The Worst Plumbing Pipe Materials.

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