What Plumbing Pipes Are in Most McKinney Homes?

PEX stands for cross-linked polyethylene. It is a flexible plastic tubing used for supply lines in most McKinney homes built after 2000. You can identify it by color — red for hot water, blue for cold, and white for either.

PEX is common in McKinney's master-planned communities. Homes in Craig Ranch, Tucker Hill, and Adriatica were built during the PEX era. Many use a manifold system that distributes water to each fixture on its own dedicated line. This makes it easy to shut off one fixture without affecting the rest of the house.

PEX holds up well during North Texas freeze events. Unlike rigid copper, PEX can flex slightly when water inside it freezes. This reduces the chance of a burst pipe during a sudden cold snap.

The fittings and connections are where problems typically start. A loose or improperly installed fitting can cause a slow leak inside the wall. If you notice water stains, soft drywall, or a spike in your water bill, call us to inspect your PEX connections.

Copper was the standard pipe material from the 1960s through the mid-1990s. Many McKinney homes built before 2000 still have copper supply lines. Copper is durable and can last decades under normal conditions. However, McKinney's hard water accelerates mineral buildup inside copper pipes and can lead to pinhole leaks over time.

The City of McKinney is actively replacing copper service lines with poly pipe across thousands of properties. If you receive a notice on your door about service line work, your street is part of that program. The section from the meter into your home is still your responsibility.

Galvanized steel pipes are found in homes built before 1970. These pipes corrode from the inside out. As rust builds up, your water pressure drops and your water may take on a reddish or brownish color. The EPA warns that galvanized pipes can leach lead into drinking water as the protective zinc coating deteriorates over time.

Watch for these warning signs in older McKinney homes:

• Rust-colored or discolored water
• Low water pressure at multiple fixtures
• Frequent leaks at joints or fittings
• Water bill increases without a change in usage

You don't need special tools to get a good idea of what pipes are in your home. A flashlight and a few minutes is all it takes to check the most visible spots.

Follow these five steps:

• Check under sinks — Look at the supply lines running to the faucet. This is one of the easiest places to see exposed pipe.
• Look near your water heater — The pipes connecting to your water heater are usually visible. This is a reliable spot to identify your supply line material.
• Find your main shutoff — The pipe near your main shutoff valve often shows the material used throughout the home.
• Check your attic if accessible — Many North Texas homes route supply lines through the attic. Bring a flashlight and look for pipe runs along the walls or near the water heater platform.
• Do a magnet test — Hold a magnet to the pipe. If it sticks, you have steel. Copper and PEX will not attract a magnet.

Use color and texture as your guide. Copper looks reddish-brown and may show green patina at joints. PEX is flexible and comes in red, blue, or white. Galvanized steel is dull gray with threaded fittings. PVC is bright white and rigid.

Your home inspection report is another useful resource. Repipe work and water heater replacements are often documented in permit history. If you're unsure after checking, a licensed plumber can map your full system in one visit.

The type of pipe in your home directly affects how a repair gets done. Different materials need different tools, techniques, and parts. Knowing your pipe type helps you have a more informed conversation before any work begins.

PEX homes are generally easier to work on. Fixtures can be isolated at the manifold without shutting off water to the whole house. When problems do come up, they are usually at the fittings — not the pipe itself.

Copper homes in McKinney carry a higher risk of pinhole leaks and slab leaks. Hard water and North Texas soil conditions both put stress on copper over time. Baker Brothers specializes in slab leak detection and repair across McKinney and North Collin County.

Galvanized steel homes often reach a point where patching no longer makes sense. If you are dealing with recurring leaks, low pressure at multiple fixtures, or discolored water, a full repipe may be the smarter long-term choice.

Call us if you notice any of these signs:

• Recurring leaks at the same location
• Rust-colored or cloudy water
• Water pressure that keeps dropping
• A water bill that spikes without explanation
• Your home is more than 30 years old and has never been repiped

Baker Brothers serves McKinney, Allen, Frisco, Prosper, and communities across North Collin County. Our plumbers are licensed, background-checked, and arrive with an upfront quote before any work begins.

Call (469) 398-3229 for plumbing repair in McKinney. Located at: 7300 State Highway 121, Suite 399, McKinney, TX 75070.