Water supply pipes are a fundamental component of any home’s plumbing system. They are responsible for delivering clean water from the main supply to various fixtures throughout the house. There are different types of water supply pipes that can be used in the home. The pipe material impacts various factors such as durability, cost, ease of installation, and the specific needs of the plumbing system.

You may be facing ongoing problems with your water mains pipe and are thinking of water pipe replacement. Alternatively, you might be trying to identify the types of water supply pipes that are used in your historic property. Whatever your reason, we’ve created this handy Hamblin Watermains guide to help you identify what metal is used for pipes in plumbing in houses and other materials that modern pipes are made from.

MDPE pipes

MDPE (medium density polyethylene) pipes have become more popular over recent years. Underground MDPE pipes are blue to highlight that they belong to drinking water systems below ground. When they are above ground, MDPE pipes are black to show they are part of a ground drinking water system.

Advantages of MDPE pipes

The lightweight system is easier than other materials to work with, while still being strong and durable enough to be used underground. These pipes are resistant to chemicals and corrosion and typically last for 50 years.

Disadvantages of MDPE pipes

MDPE pipes are more expensive compared to other types of pipes. They’re not always suited to carrying hot water or high-pressure water as they can warp and become brittle.

Lead Pipes

Lead pipe was one of the more common types of water supply pipes used many years ago so can still be found in older properties. Lead pipe does not tend to be used today and replacing old lead water mains pipes is often recommended to reduce the likelihood of a contaminated water supply.

Advantages of Lead pipes

Lead pipes are incredibly sturdy and are resistant to weather changes. They aren’t usually affected by chemicals or household cleaning products.

Disadvantages of Lead pipes

Over time, the condition of the pipe work can deteriorate and cause issues with corrosion and hidden leaks. They can also contaminate the water supply and pose a significant health risk.

Cast Iron Pipes

Cast iron pipes are one of the more popular types of water supply pipes. They are often nicknamed the ‘quiet pipe’ as they reduce the noise of flowing water.

Advantages of Cast iron pipes

They are a more affordable option than other types of pipes, are highly durable and not at risk of corrosion.

Disadvantages of Cast iron pipes

Cast iron pipes need to be put in by a professional as they are prone to damage when in transit and being connected.

Copper pipes

Copper is often used for pipes designed to carry hot water or handle intense pressure. They don’t absorb substances that the pipes come into contact with and therefore protect the water supply.

Advantages of Copper pipes

Copper pipes are a high-quality option that doesn’t pose any threats to health and can be cut relatively easily. They don’t corrode easily and are extremely flexible.

Disadvantages of Copper pipes

They are more expensive than alternative types of pipes.  Copper pipes can also become damaged or burst in cold climates when the water and pipes freeze.

PVC pipes

PVC (Polyvinyl chloride) is a popular option for mains water pipes. These pipes are suitable for temperatures below 45 degrees Celsius. The combination of plastic and rubber is relatively simple to install and offers an effective solution.

Advantages of PVC pipes

PVC pipes are affordable options compared to other more expensive types of plumbing pipes on this list. They are resistant to corrosion and chemicals and are easy to transport and install.

Disadvantages of PVC pipes

PVC pipes can warp under high pressure. The plastic is also bulkier than metal alternatives and can be difficult to fit in small spaces.

FAQs

What is the best pipe to use for an underground water line?

PVC and HDPE (High-density polyethylene) pipes are usually the most popular types of plumbing pipes for underground water lines. They can withstand high pressure, are cost-effective and have minimal corrosion.

Is PEX better than PVC?

PEX (crosslinked polyethylene) pipes usually last for 50 years while PVC pipes can last for up to 70 years. PVC pipes are generally more durable than PEX, although they are more difficult to install. PVC requires more fittings than PEX as the latter is more flexible.

What is the most common water supply pipe?

There are different types of plumbing pipes and fittings for various requirements. Copper pipes are reliable and resistant to corrosion, as well as being able to transport hot water. However, the high expensive means many people opt for cheaper alternatives such as PVC and cast-iron pipes.

What is the best piping for plumbing?

The best type of plumbing pipes depends on several factors, including the specific needs of the plumbing system, local building codes, budget, and the type of water being supplied. Contact us for advice on the best pipes for your property.

How many types of water pipes are there?

There are seven main types of plumbing pipes that are used in modern times: copper, PVC, PEX, cast iron, ABS (acrylonitrile butadiene styrene), galvanized steel and Flexi Pipe/Braided Pipe.