[[File:Maintenance of plants green roof.PNG|thumb|340px|Maintneance of the Green roofs filter bed and vegetation composition/condition being performed by staff (TRCA, 2018).<ref name="example1" />]]
[[File:Pretreatment downspout RWH.PNG|thumb|300px|Visual indicator to be used when assessing the condition of a [[pretreatment|pretreatment device]] (in this case a [[downspout disconnection]] with attached filter) so that leaves and detritus from the eaves do not enter the [[Rainwater harvesting]] LID feature. Source: (STEP, 2018)<ref name="example1" />.]]