POSSIBILITY OF REDUCING DOMESTIC WATER SHORTAGE DURING DROUGHT BY POPULARIZATION OF WATER SAVING APPLIANCES

Abstract

 I studied possibility of reducing domestic water shortage during drought by popularization of water saving appliances. Dometic water demand can be reduced by 30% by popularization of water saving appliances. If domestic water demand is reduced by 25%, domestic water don't run short in case of drought equal to drought in 1994. If water demand is reduced by 15%, shortage of domestic water is allowable. If subsidy policy is adopted to reduce water demand by 15% within 10 years, every residents must pay 200 yen every month for operating fund.