Sewage Lagoon

Most First Nation communities use sewage lagoons for wastewater treatment. Sewage lagoons are man-made ponds or dyked depressions which rely on natural processes of mainly bacteria and algae to reduce organic matter to acceptable levels. Lagoons should be placed some distance from the community and oriented in such a fashion that winds do not carry odours towards the residences. The two types of sewage lagoons used are facultative and aerated.