Home > How To > Interiors > The Lowdown on Low-Flow Toilets Interiors The Lowdown on Low-Flow Toilets "AS MANUFACTURERS RUSH TO MEET THE JANUARY 1994 DEADLINE MANDATING 1.6 GALLON TOILETS, BOTH GRAVITY AND PRESSURIZED MODELS ARE COMPETING FOR THE VAST MARKET" By Don Best Login or Register to download the PDF version of this article. (486.5 kB)