Every floor drain connects an occupied space directly to the sewer.

That pathway is open more often than people realize. A P-trap blocks sewer gas from below, but it leaves the drain opening open to the room, and the standing water and drain walls hold biofilm year round. When the trap water evaporates, which happens in any drain that goes unused, the pipe is open end to end. Sewer gas, odors, aerosols, and drain flies move up into the space above. In most buildings, nobody is managing that.

Green Drain™ is a one-way barrier that drops into the drain you already have. Its silicone membrane opens under flow, then seals shut the moment flow stops. It works alongside your existing P-trap rather than replacing it, needs no water, power, or chemicals, and installs in seconds without tools. It comes in eight sizes, from 1.25 to 6 inches. It is preventive maintenance for a part of the building that rarely gets any.

40+ peer-reviewed studies document what an unmanaged drain pathway allows: infection outbreaks traced to hospital drains, indoor air quality failures, drain fly infestations in commercial kitchens. That research is about drains, not about us. Our own testing is separate: SGS tested Green Drain to retain over 99.9% of an aerosolized MS2 viral surrogate. The product holds five independent certifications (cUPC, NSF/ANSI 2, WaterMark, CE, and Saber) and is HACCP International endorsed. It is in use today in hospitals, restaurants, schools, food plants, and homes.

We started Green Drain because every occupied space deserves protection from what is coming up through its own plumbing. Drains are the most overlooked contamination vector in the built environment.

Green Drains Inc

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Green Drains Inc

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