Another preliminary product is a map displaying data on wastewater treatment plants in the GGH, identifying those that discharge effluent to inland waterbodies other than the Great Lakes. For each plant, the underlying information identifies the name and type of receiving body, the owner/operator, and links to data sources.
Again, profiles from municipal water and wastewater information systems would allow for further refinements. For most wastewater treatment plants, information is available on the type of treatment (e.g. secondary, tertiary) and for some plants, on the number of connections or population served.
Figure 8: Settlements by receiving waterbody for wastewater effluent
A process could be established to link the GIS data sets to MOECC databases such as the Drinking Water Information System (DWIS) and to other MOECC and Environment and Climate Change Canada data sets to allow live updating of these data sets.