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Evaluation of Ultra-Low Flow Toilets
Engineering Technologies Canada Ltd. (ETC) was retained by the PEI Department of Environment, Labour and Justice to carry out an evaluation of ultra-low flow (6 litre) gravity toilets in two schools.The objectives of the study were to calculate how much (if any) water can be saved in schools by using 6 litre instead of conventional (13.2 litre) gravity toilets and to determine if there is a higher rate of plugging or “double flushing” in 6 litre toilets.
The Evaluation of Ultra-Low Flow (6 Litre) Gravity Toilets in Two Schools report is online as a PDF document.


