(Washington Insider Magazine) – You might have come across the term “S trap” or its close relative, the P trap, when dealing with plumbing systems. But have you ever wondered: Why are S traps illegal? This article will discuss the causes behind the ban on S traps and the potential risks they pose to your home and health.
What Is an S Trap?
An S trap is a plumbing system component that resembles the more commonly used P trap but with an extra curve that goes up and back down. It is typically found beneath sinks, bathtubs, and other fixtures to prevent foul-smelling sewer gases from entering your living spaces.
Why Are S Traps Illegal?: The Perilous Problem with S Traps
The reason S traps have been deemed illegal under the Uniform Plumbing Code is due to a significant flaw in their design. These traps are susceptible to a process called siphoning, where water is forcefully sucked out of the trap, breaking the vital water seal that prevents sewer gases from escaping.
The Threat of Sewer Gases
Hazardous sewer gases, including methane, can infiltrate your home when the water seal is compromised. Methane gas, commonly known as sewer gas, is highly toxic and can pose critical health risks if inhaled in large quantities. In extreme cases, it can lead to symptoms such as headaches, dizziness, nausea, and even asphyxiation.
The Code Violation Dilemma
If you are currently using an S trap in your plumbing system, you unknowingly violate the Uniform Plumbing Code. This is not a mere technicality; it’s a crucial safety concern. In the event of a remodeling project or a home inspection, you will be required to replace the S trap with a compliant alternative like the P trap.
Availability of S Traps
Curiously, despite being illegal, S traps can still be found in some places. They are not entirely phased out from the market, and you might still stumble upon them in home improvement stores or online platforms like Amazon. However, just because you can buy them doesn’t mean you should use them.
Replacing an S Trap: A Complex Task
Replacing an S trap with a P trap is not a simple DIY task. It requires careful consideration and expertise. In most cases, it is advisable to hire a licensed plumber to handle the job. The primary challenge lies in ensuring the proper installation of a vent stack or, depending on the local plumbing code, air admittance valves to prevent siphoning and gas release.
When Must You Act?
If you can tolerate the unpleasant smell of sewer gases lingering in your home, then, technically, you don’t have to replace your S trap right away. However, this is an issue that should not be ignored, as it jeopardizes your health and the well-being of your household.
Conclusion: Why Are S Traps Illegal?
The illegality of S traps under the Uniform Plumbing Code is not without reason. The risk of siphoning water and releasing hazardous sewer gases into your home makes them a serious safety concern. Whether planning a remodeling project or ensuring your plumbing system is up to code, replacing the S trap with a P trap should be a top priority. Don’t compromise the health and safety of your loved ones; seek the help of a licensed plumber to make your home a safer place. If you suspect you have an S trap in your plumbing system, don’t hesitate to take action – your well-being depends on it!