LST HS111 Risk impact general groundwater supply — GIS aid for small sewers

Areas within the water protection area for groundwater supply have a high risk of being affected. The layer for water protection areas (VSO) covers only VSOs decided by the County Administrative Board. This means that some municipal VSOs and water supplies without a designated protected area may be missing. The purpose of the GIS support is to create conditions at a national level for a reasonable, legally certain and more consistent assessment of the level of protection under Chapter 2, Section 3 of the Environmental Code when examining small sewers. The GIS support consists of maps showing the risk of impact on recipient/exposure point due to load from a drain. The maps have been produced through risk assessments based on the legislator’s instructions on criteria for assessing the high/higher level of protection for the entire surface of Sweden.