Underground stormwater infiltration

This increases the risk of contaminating groundwater resources and drinking water supplies if infiltration facilities are designed and operated without fully considering the types and sources of pollutants, the hydrogeologic3 conditions and the groundwater uses. [...] To recharge systems must be utilized limit clogging, properly designed systems will include coarse drain rock to the maximum extent possible as determined by a qualified professional placed around the outside of the manhole and a sedimentation sump to experienced in this field, in order to remove sediment and trash from the runoff prior to conveyance into the promote interception of pollutants and [...] Regulations and legislation applicable to underground stormwater infiltration Regulatory oversight for the design and operation of underground stormwater infiltration systems occurs at the municipal level or by the Ministry of Transportation and Infrastructure. [...] It is highly dependent on the capacity of the soil media to adsorb the pathogens (factors such as soil pH, water content and temperature), as well as the length and time of travel of the flow path from the source of contamination to the aquifer. [...] Low risk to groundwater resources Underground stormwater infiltration systems are presumed to have a low risk to groundwater resources and drinking water supplies if, in the opinion of the approving agency, the siting, design and operation of the facilities adequately address: • Potential pollutant types, sources, and loadings in stormwater; • Methods to control sources of pollutants; • Conformanc