Changes

Infiltration practices are not recommended:

Infiltration practices are not recommended:

#over-swelling clays or unstable subsoils,

#over-swelling clays or unstable subsoils,

#contaminated soils or sites with high risk of contamination from on-site activities,  

#contaminated soils or sites with high risk of contamination from on-site activities (i.e. pollution hot spots),

#in flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups,

#in flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups,

#in areas where the ecology and natural hydrology are dependent upon surface water,

#in areas where the ecology and natural hydrology are dependent upon surface water,

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or

#where prohibitions and/or restrictions exist per approved Source Protection Plans (see MOECC guidance).

#where prohibitions and/or restrictions exist per approved Drinking Water Source Protection Plans (e.g. to treat pavement runoff within 2 year time of travel wellhead protection areas; see MOECC guidance).

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Infiltration facilities should be designed with drainage modifications where:  

Infiltration facilities should be designed with drainage modifications where:  

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{{textbox|Where infiltration is impossible, LID design alternatives exist which can still capture and retain stormwater:

{{textbox|Where infiltration is impossible, LID design alternatives exist which can still capture and retain stormwater:

*[[Stormwater planters]]

*[[Stormwater planters]]

*[[Rainwater harvesting]]

*[[Rainwater harvesting]]