The P-trap for a shower drain is a U-shaped section of pipe under the shower, below the rest of the drain line. It's designed to trap a small amount of water in the drain line and prevent gases ...

If a vent line is damaged or blocked, gases from the sewer might leak through, even if water is present in the trap. Read ...

Inspect p-traps. One of the most common culprits of offensive drain smells is a dry p-trap. The p-trap holds water in the U-shaped bend of the pipe, which keeps sewer gas from seeping into your home.

PORT TOWNSEND — The city of Port Townsend will test its sewer system with smoke and dye this week along Lawrence Street. Inspections will be between 8 a.m. and 6 p.m. daily. In a letter sent to ...