Galvanized water pipes were once the gold standard. Commonly installed in properties built before the 1960s, these steel pipes were coated with a layer of zinc to prevent rust and corrosion. While the intention was good and the pipes were effective for a time, modern property owners and plumbers now face the long-term consequences of aging galvanized plumbing systems. Here’s a closer look at the lifespan of galvanized water pipes, how they age, and what to watch out for.
What Are Galvanized Water Pipes?
Galvanized pipes are made of steel or iron and are coated in zinc to protect against rust and corrosion. The zinc barrier was meant to prolong the pipe’s life and maintain water quality. At the time of their widespread use, galvanized pipes offered a more durable alternative to older lead piping.
Under ideal conditions, galvanized water pipes have a lifespan of 40 to 70 years. However, various factors can influence their longevity:
- Water Quality: Hard water, with high mineral content, can accelerate corrosion and scaling inside the pipes.
- Zinc Coating Thickness: Thicker coatings tend to last longer, but the quality varied significantly during different manufacturing periods.
- Installation Practices: Poor installation or improper pipe joints can reduce lifespan.
- Environment: Soil conditions and humidity levels can affect buried or exposed pipes.
Improvements built before 1960 that still have galvanized pipes are likely dealing with plumbing that’s near or beyond its expected service life.
Signs of Aging Galvanized Pipes:
As galvanized pipes age, the zinc coating erodes, exposing the steel to water and oxygen. This causes rust and mineral buildup inside the pipes, which leads to a number of problems:
- Low Water Pressure: Internal rust and scaling reduce water flow.
- Discolored Water: Reddish-brown water from taps is often a sign of corrosion.
- Leaks and Pipe Bursts: Weakened pipe walls can crack or burst.
- Uneven Water Flow: Pressure inconsistencies from buildup are common in older systems.
These signs often indicate it’s time to evaluate the condition of your plumbing system.
Moving Forward:
Aside from plumbing inefficiencies, galvanized pipes can pose health concerns. Corroding metal may leach into the water supply, and if lead was used in pipe joints or older fittings, contamination becomes a serious issue. While the zinc coating itself isn’t toxic, prolonged exposure to rusted, degrading materials is a risk to water quality.
Plumbers often recommend replacing galvanized pipes with more modern materials like copper, PEX, or PVC. The process, often called repiping, can be extensive, but the benefits include:
- Improved water pressure
- Cleaner, safer drinking water
- Fewer leaks and long-term maintenance
- Increased home value
Notes:
Galvanized water pipes served their purpose for many decades, but their time has passed. If your church was built before 1965 and haven’t had its plumbing inspected recently, it’s worth having a licensed plumber assess the condition of your system. Replacing aging galvanized pipes not only improves water quality and pressure but also safeguards your church against potential leaks and water damage.
A proactive approach today can prevent major headaches down the line.
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Disclaimer: Every situation is different and particular facts may vary thereby changing or altering a possible course of action or conclusion. The information contained herein is intended to be general in nature as laws vary between federal, state, counties, and municipalities and therefore may not apply to any given matter. This information is not intended to be legal advice or relied upon as a legal opinion, course of action, accounting, tax, or other professional services. You should consult the proper legal or professional advisor knowledgeable in the area that pertains to your particular situation.
