20230419 10414900 1.0 TRUE System met WSER more than 75% of the time in 2016 The symbology of this layer group represents whether the wastewater systems in Canada exceeded the Wastewater Systems Effluent Regulations (WSER) effluent quality limits according to a monthly, quarterly or annual averaging period. They meet the WSER if they respect the effluent quality limits more then 75% of the time. Environment and Climate Change Canada, ministère de l’Environnement et de la Lutte contre les changements climatiques du Québec and Government of Yukon – Department of Environment