20230419 10414900 1.0 TRUE Monitoring results This layer group represents whether the wastewater systems in Canada met the Wastewater Systems Effluent Regulations (WSER) effluent quality standards for the last three years. A system is deemed to as meeting the WSER if they respect the effluent quality limits more than 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