Shoreline areas of waste water in accordance with the YSL

The Environmental Protection Act (527/2014, YSL) defines a transitional period for the upgrading of waste water treatment systems based on requirements outside the sewage network prior to the construction date in force before 2004 or on a building permit issued. The transitional period of 31 October 2019 concerns treatment systems that contain domestic waste water from a building situated no more than 100 metres from the shoreline of the water or sea. The distance is measured from the wall of the building that is closest to the coastline. The transitional period shall also apply to waste water treatment systems located in Category 1 or Category 2 groundwater areas. This spatial data set provides an indicative description of the distance referred to in the Environmental Protection Act, but in individual cases a case-by-case assessment must be made in terrain. There are two layers of maps: The first layer describes a zone extending from water bodies to a distance of 100 metres. The second layer describes a safety zone between 90 and 110 metres away from water bodies, which is intended to describe the uncertainty surrounding the data. The map levels have been formed by buffering the regional rivers, sea and lakes (>= 1 ha) and SYKE’s Vipu rivers, which are based on the terrain database from 2000-2008, from the Land Survey of Finland (2017). The use of spatial data sets at the distance of a building from the shore gives an indicative result and is associated with significant local uncertainty: There is no complete data on water bodies. The data may include water areas that are not water bodies in accordance with the Water Act and, on the other hand, water bodies may be missing from the data. In particular, small water bodies such as streams with a catchment area of less than 10 km² and ponds of less than 1 ha are excluded from the material. According to the Environmental Protection Act, the distance to a water body is defined from the shoreline according to the average water level. This information is not available in the spatial data set. The average water level is the average of daily water level observations based on systematic water level monitoring. The shoreline in the spatial dataset is based on long-term observation based on average water height and may differ significantly from the shoreline according to the average water level. The user must be able to interpret what is the wall closest to the water body or whether the area of the spatial dataset is a water body or not. The material is part of SYKE’s open data (CC BY 4.0). Purpose: The material is available to the municipal authorities to assist in the delimitation of the area, as well as to other data-needers. The zone data gives an indicative description of the distance referred to in the Environmental Protection Act, but in individual cases a case-by-case assessment must be made in the terrain. For more information: http://www.ymparisto.fi/fi-FI/Rakentaminen/Rakennushanke/Talotekniset_jarjestelmat_LVI/Kiinteiston_jatevesien_kasittely/Syventavaa_tietoa/Hajajatevesien_YSLn_mukaiset_siirtymaaikaalueet *** The Environmental Protection Act (527/2014) defines the required treatment efficiency for on-site wastewater treatment. Treatment requirements automatically apply to all new constructions. Old buildings, permanently habited houses, summerhouses, farmhouses etc. have a two-phase transition period. Buildings located, either on a) a groundwater area, or b) closer than 100 meters from the mean water level of a water body, defined by The Water Act, need to fulfill the treatment requirements, by 31. October 2019. The other buildings do not have a transition period bound to a date. This data provides approximate spatial information about the coastal areas defined in the Environmental Protection Act. There are two map layers: one with a 100-meter distance from a water body, and the other with a 90-110 meter zone from a water body. The uncertainty of the data must be taken into account. The data is not to be understood as an amendment to the Environmental Protection Act. This SYKE’s dataset can be used according to open data license (CC BY 4.0). Both the 100 m zone and the 90-110 m safety zone have been established by buffering the following spatial data sets: 1. Lakes (MML terrain database 2017, stable waters over 1 hectare) 2. Lever knives (if applicable). The levers correspond to the Land Survey of Finland’s Land Survey database for the years 2000-2008 3. Regional rivers (MML terrain database 2017, flow water) 4. Sea and sea islands (MML terrain database 2017)