Does surface water from the property drain to a public sewer?
This is one of the questions in the Con29DW. But why is there such a question in the first place?
Since the transfer of a number of private sewers in October 2011, local water companies became responsible for their maintenance. Since 2017, SuDS (Sustainable urban Drainage Systems) have become more significant owing to the impacts of climate change and increased development in already urbanised areas. With these new developments, it’s highly likely that surface water sewers will not be adopted by the local water companies because of the SuDS system that’s been put in place by the developer. This is something that any buyer needs to be made aware of, as there will be a maintenance charge for the upkeep of the grounds and the SuDS system itself.
Here are a few hints and tips from Susdrain.org.
Sustainable drainage is a departure from the traditional approach to draining sites. There are some key principles that influence the planning and design process enabling SuDS to mimic natural drainage by:
- Storing runoff and releasing it slowly (attenuation).
- Harvesting and using the rain close to where it falls.
- Allowing water to soak into the ground (infiltration).
- Slowly transporting (conveying) water on the surface.
- Filtering out pollutants.
- Allowing sediments to settle out by controlling the flow of the water.
Surface water is a valuable resource and this should be reflected in that way it is managed. It should be considered from the beginning of the development process and then throughout, influencing the design and layout of any public open space, or transport network, for example. It is important, where appropriate and particularly on larger developments, that teams (planners, engineers, landscape architects) work together from the outset.
SuDS management train
- They can help create attractive corridors in developments, connecting people and the environment to water and open spaces.
- They provide attractive public open spaces, improving the quality of life and creating a better community.
- They help mitigate and adapt communities to climate change and are able to contain extreme weather events.
- Most importantly from an environmental point of view, they don’t need energy or pumping and reduce the demand on existing traditional sewers and downstream water treatment.