Fallstudie om hur Gävle kommun kan minska sitt dricksvattensvinn
Sammanfattning: To ensure sustainable development UN approved 17 sustainable development goals in the year of 2015, in which goal six specifies to ensure water and sanitation for all, and specified in goal six target indicator four, in a more effective way. To have an average of 24% in losses of the total amount of produced drinking water in Sweden is not effective, and Gävle municipality isn´t any better with their recorded drinking water wastage between 28-40% the last years. A big part of the losses of drinking water are assumed to be water that the municipality uses within their daily work such as rinsing of the drinking water network and inadequate measurements of the used drinking water. The aim of this study is to create groundwork for an action plan for how Gästrike Vatten can work to minimize their drinking water losses in Gävle municipality.To identify what the organization considers to be most important is a good first step in creating an action plan, to then select key elements to which goals can be phrased to ese future comparisons with similar organizations. Through internet research, surveys, interviews, computer analysis, in addition literature searches Gävle munici-palities condition of soil, dimensions- and materials of the drinking water network have been established.Gävle Vatten works actively to reduce their commercial drinking water losses by sealing water hydrants and installing water kiosks all around the municipality. The first step to localize leaks in the network is by district division which seven out of the eight respondents use. Acoustic leak detection is the most common secondary step to localize leaks more accurately that Gävle municipality uses, however certain difficulties can emerge. Most of the new drinking water pipelines are made from plastic, which has a lower sound conductivity then pipelines made from metal.It is a continual process to reduce ones drinking water losses to an acceptable level, one which Gävle municipality has already started. To potentiate the effect of their work an action plan is recommended within the organization to identify goals and ways to achieve them so that the company’s resources can be distributed accord-ingly. Their next step can be to work with active leak detection, more specifically with gas injection that works well on metal as well as plastic pipelines. To acquire more accurate measurements of the consumed drinking water, digital water meters are recommended at the consumers.The authors believe that Gävle municipality has good conditions to continue devel-oping their work to minimize their drinking water losses.
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