Did you ever wonder what that funny looking pipe under the sink was? You know the curved one.
That is a P-trap and what that does is trap water in the pipe to prevent sewer gas from entering the house. The P-trap combined with proper venting will keep your house from smelling like a sewer and more importantly may keep safe from disease, specifically SARS.
You have to remember severe acute respiratory syndrome (SARS) that hit China back in 2003 don’t you? Well it appears that, according to the World Health Organization “… that ineffective P-traps in the drainpipes of the Amoy Garden apartments in Hong Kong triggered the…outbreak.
US plumbing is required to have P-traps on drainlines for all sinks, tubs, showers and toilets to prevent this sort of issue. So look if you smell sewer gas or see tiny gnats flying around your house you are probably a victum of a poor or untrained plumber that failed to install a P-trap somewhere in your house.
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