Environmental regulations and economics have increased interest in minimizing water use and effluent discharge in the world. The reduction of water use by pulp and paper industries is mainly driven by environmental regulation and cost saving. Although our water consumption has decreased considerably during the last decade, we are still large users of fresh water in comparison to other manufacturing industries. A good water management allows us to reduce the water consumption without any increase in toxicity and affection to the processes or the quality of the final products.US pulp and paper industry discharged５ ３m ３ ／adt of effluent in１ ９ ９ ９． This represents a４ ０percent reduction as compared to１ ９ ７ ５． Continuous progress has been made by the Canadian industry in reducing water use. The average discharge is６ ６m ３ ／adt presently. Current design levels for new mills in the newsprint and bleached kraft sectors are about１ ５m ３ ／adt and５ ０m ３ ／adt, respectively. The average discharge of EU pulp and paper industry is３ ５m ３ ／adt presently and show the decrease of１ ９m ３ ／admt (３ ５％)during recent５years.In Japan the national average of effluent discharge by the pulp and paper industry is about９ ０m ３ ／ adt in２ ０ ０ １． Although the effluent volume has been decreased７ ５m ３ ／admt(４ ５％)since１ ９ ８ ０， there are still opportunities for further reduction on water use and effluent discharge.

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