| #P001 | unknown | unknown | mandatory | Precious metals | wastewater | requirement | >= 30 percent by weight | Any alloy containing 30 or greater percent by weight of precious metals is considered a precious metal alloy. | Applies to silver, gold, platinum, and palladium | high |
| #P002 | unknown | unknown | mandatory | Beryllium | wastewater | requirement | >= 0.1 percent by weight | Beryllium alloys are any alloy in which beryllium is present at 0.1 percent or greater by weight. | | high |
| #P003 | unknown | unknown | mandatory | Iron, copper, or aluminum | wastewater | requirement | > 50 percent by weight | Alloys for which iron, copper, or aluminum is greater than 50 percent by weight (except precious metals) are not included in the category of nonferrous metal alloys. | Except precious metals | high |
| #P004 | physical | operational | mandatory | Frost penetration depth | other | requirement | 1.8 m | According to the Design Criteria for Sewers and Watermains, frost penetration is considered to be 1.8 m in Toronto. | Specific to City of Toronto jurisdiction | high |
| #P005 | design | operational | mandatory | Pedestrian clearway width | other | requirement | 2.1 m | City requires a pedestrian clearway of 2.1 m. | Required for new construction projects | high |
| #P006 | design | treatment | mandatory | Soil volume per tree | other | requirement | >= 30 m3 | Available space for continuous soil trenches should provide a minimum of 30m3 growing medium per tree. | Per tree in continuous soil trenches | high |
| #P007 | design | health | mandatory | Vertical clearance to water table | other | requirement | > 1.0 m | bottom of GI system is > 1m from water table | Infiltration-based systems; measured from base of infiltration layer to seasonal high groundwater table | high |
| #P008 | physical | treatment | mandatory | Native soil infiltration rate | other | requirement | > 15 mm/hr | native soil infiltration rate is > 15mm/hr | Minimum rate for infiltration-based systems without requiring underdrain | high |
| #P009 | design | operational | mandatory | Minimum underdrain diameter | other | requirement | >= 200 mm | Minimum 200mm diameter underdrains | Cold weather design consideration to prevent freezing | high |
| #P010 | operational | operational | mandatory | Maximum system draindown time | other | requirement | <= 48 hours | Design to favour draindown of GI system including reservoir material within 24 hours preferably, 48 hours maximum | To avoid system freezing or mosquito breeding | high |
| #P011 | design | operational | mandatory | Building foundation setback | other | requirement | >= 4 m | infiltration-based GI systems shall be set back from buildings a minimum of 4 m | Unless impermeable liners are installed or foundation is waterproofed | high |
| #P012 | design | operational | mandatory | Curb opening inlet width | other | requirement | >= 600 mm | Curb openings should have a minimum width of 600mm at the base to allow for maintenance | | high |
| #P013 | physical | treatment | mandatory | Saturated hydraulic conductivity (Type 4 Mix) | other | requirement | 75 - 300 mm/h | 0.0021 - 0.0083 cm/s (75-300 mm/h) Infiltration | For Bioretention and rain gardens requiring high infiltration | high |
| #P014 | design | treatment | guideline | Impervious/Pervious CDA Ratio | other | requirement | 10:1 ratio | A general ratio of 10:1 impervious to pervious should be used | Used for appropriate Contributing Drainage Area (CDA) assessment | high |
| #P015 | physical | treatment | mandatory | Permeable pavement surface infiltration rate | other | requirement | >= 280 mm/hr | minimum infiltration rate of 280 mm/hr over the expected design life | Applicable to permeable asphalt or concrete installations | high |