Evapotranspiration Beds are well suited to areas with lower percipitation and that have low permeability soils, such as clay and silt.
Some parts of the province are not well suited to exposed ET systems due to high rainfall, for example coastal BC
Evapotranspiration beds use an impermeable liner, so that no effluent infiltrates into the surrounding soil. These may be used in any structurally sound soil, or even on a site with no soil.
Evapotranspiration of water from a well designed bed should exceed lake evaporation or pan evaporation and should continue throughout the year (even in cold weather or with un-compacted snow cover); however, it will be lower at some times of the year.
