Dimensionerande vattenförbrukning och alternativa vattenkvaliteter

Sammanfattning: Water is a necessary resource for a sustainable society. Groundwater is one of our supplies for potable water, other than surface- and seawater. Around the world the usage and accessibility of potable water varies, and many in places there are problems with maintaining a good water situation regarding both water quality and quantity. Even in Sweden, the water situation is not ideal. Even though we theoretically have enough water, the quality, accessibility as well as the maintenance of the infrastructure and protection are poor in places and at times, based on geological conditions, population increase and climate change. Water shortage problems occur in SE Sweden, where mainly Öland and Gotland are struggling. The aim of this paper is to illustrate the dimensioning of water usage from groundwater as well as to suggest actions, such as usage of alternative qualities of water that could lead to reduction of consumption of water of drinking water quality and thereby obtain a more secure water supply. Other than economize water usage, with alternative water qualities, the matter of spreading knowledge about the water cycle to contribute to a more sustainable future is important. As a continuation of the project Lilla Klåveröd, this paper moves on from the two previous theses, dealing with illustrating the water cycle on a small scale that is Lilla Klåveröd. Whereas this paper will focus on the withdrawal and usage of potable water in our water cycle providing insight on possible improvements. Conclusions are that the usage of alternative water such as rainwater for purposes such as washing, irrigation or toilet flushing, are in in several countries motivated and used as a way of saving money and facilitate the water distribution. Measures like higher costs, alternative water storing, information spreading, and technical solutions would convey a steady and consistent water usage that would also result in more steady water levels, preventing both water shortages and deterioration of water qualities.