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Introduction to SuDS 2016

increasing both the rate and amount of rainwater that turns into run-off and it has to go somewhere traditional piped ‘drains’ ... 55,000 properties affected two thirds of these were from surface water run-off overloading drainage systems in addition to flood risk large amounts ... of surface water run-off can cause water quality problems as water runs over hard urban surfaces it picks up pollutants that are washed into

Introduction to SuDS 2016

where it falls mimicking natural drainage processes by reducing runoff volumes and encouraging recharge of the natural groundwater at source .. they mitigate many of the adverse impacts of storm water run-off on the environment in terms of both volume and pollutants at the