Drainage Systems · Traps
Sewer Gas
Gases from the drainage system (e.g., methane, hydrogen sulfide) that can be toxic and explosive. Traps and vents prevent entry into the living space; loss of trap seal or vent problems can allow sewer gas indoors.
Safety note
🦠 SAFETY: Sewer gases can be toxic and explosive. Ensure proper ventilation when working on drains; fix trap and vent issues promptly.
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