TroubleshootingUpdated June 17, 2026
Many homes around Westmont still have galvanized steel plumbing tucked behind their walls. These pipes were common in houses built before the 1960s, and a lot of the older single-family homes and some mid-century builds in this area still rely on them. Galvanized pipes corrode from the inside out, leading to water quality problems, low pressure, and hidden leaks. If you own a house with unknown or aging pipework, it's important to know the warning signs and what steps to take next.
Why Galvanized Pipes Are an Issue in Westmont
Galvanized steel was the standard for decades because it was strong and widely available. Time hasn't been kind to this material. Our moderately hard municipal water from Lake Michigan, combined with the humid continental climate and freeze-thaw cycles, can accelerate corrosion inside these pipes. Over the years, minerals build up inside galvanized pipes, shrinking the diameter and leading to poor flow. Corroded pipes are also prone to leaks, especially where rust has eaten completely through.
With the clay soils and moderate water table here, undetected leaks can do a number on basements and slabs. Leaks behind walls or under floors tend to go unnoticed until major water damage or high water bills show up. This is why proactive inspection is so important for houses built before the mid-1960s, and even some from a bit later.
Common Signs Your Home Still Has Galvanized Pipes
Older plumbing doesn't always cause trouble right away, but there are some clear signs. If you spot any of the following, your home might still be running on outdated galvanized lines:
- Low water pressure at one or more fixtures, even after cleaning aerators
- Rust-colored water, especially after water sits overnight or after returning from vacation
- Visible grayish pipes with threaded fittings in the basement or utility area (galvanized pipes are magnetic, unlike copper)
- Frequent leaks or signs of staining on walls, ceilings, or near pipe joints
- Water with a metallic taste or odor
Discolored water is a major red flag. The rust can show up in both hot and cold lines, but it's especially common on the hot side because water heaters speed up interior corrosion. For more details about water heaters and related issues, see our Water Heater Services page.
What Problems Do Galvanized Pipes Cause?
Aside from reduced flow and staining, galvanized pipes bring several risks:
- Pinhole leaks that develop slowly and lead to hidden water damage
- Complete blockages from mineral scale, especially at bends and tees
- Burst pipes in winter if the line is already weakened by rust and freezing temperatures hit
- Potential cross-contamination if rust ends up in potable water
Because Westmont winters get cold enough for lines to freeze, any weak spot from rust or scale becomes a liability. We see this a lot in houses that haven't had updated plumbing or insulation. Older pipes are also prone to joint failures, as the zinc coating flakes off and threaded connections lose their seal. If you're dealing with recurring leaks or water stains, take a look at our Leak Detection & Repair and Pipe Repair & Repiping resources for more about what to expect.
How to Identify Galvanized Pipes in Your Home
A quick inspection can tell you a lot about what type of pipe you have. Galvanized lines are typically gray with threaded joints. You'll often see them running across basement ceilings or near water meters. If you scratch a small area with a screwdriver or file, you'll see a silver-gray color beneath the surface. Copper is reddish, and plastic (like PVC or PEX) is white, blue, or red. Magnet will stick to galvanized, but not copper.
It's common for houses in the western suburbs of Chicago to have a mix, with repairs over the years using different materials. If you see transition fittings (unions connecting steel to copper or PEX), that's a sign parts of the system have been replaced, sometimes only the worst problem areas, leaving other original pipes in place. If you're unsure or can't access these areas, a licensed plumber can check for you as part of a full plumbing inspection.
What Should You Do If You Have Galvanized Pipes?
It's best to plan for a full repiping if you still have a lot of galvanized in your home. Piecemeal repairs only kick the can down the road, as new leaks tend to show up elsewhere. Complete replacement with copper or PEX eliminates corrosion problems, improves water pressure, and helps protect your home from leaks and bursts, especially during those harsh Westmont winters. If you're seeing frequent drain issues, old pipe scale can also contribute to clogs. Take a look at our Drain Cleaning and Sewer Line Services for more info on dealing with backups and blockages caused by rust and mineral buildup.
The process usually involves replacing all exposed galvanized pipe with new material, connecting at the main shutoff and branch lines, and updating fixtures as needed. We aim to minimize disruption by planning work in stages, especially in occupied homes. Upgrades might also include new shutoff valves, pressure regulators, or thermal expansion tanks if we're tying into a newer water heater system.
Watch for These Warning Signs
- Drop in water pressure across the house
- Reddish or brownish water after sitting unused
- Multiple leaks or recent repairs on steel pipes
- Visible corrosion or flaking at pipe joints
- Water stains or damp spots near foundation or basement slab
If you notice these problems, it's time for a plumbing evaluation. Galvanized pipes don't fail all at once, but the problems build up. We recommend regular system checks, especially in houses built before the mid-1960s, to prevent sudden and costly issues.
If you have questions about galvanized pipes or want an honest opinion about your plumbing, our team is ready to help Westmont homeowners. Call us at 630-557-8896 to schedule an inspection or learn more about safe, modern options for your plumbing system.