Environmental guidance for your business in Northern Ireland & Scotland
Filter strips are strips of ground where water running off a site can pass, allowing some or all of it to soak away. The rest often enters a swale - shallow drainage channel - or another sustainable urban drainage systems (SUDS) component. This strip of ground can also be used to filter grit and other particles from the run-off.
Filter drains or filter trenches can be used beside roads and other impermeable surfaces, but should be avoided at busy road junctions or where rainwater can become heavily contaminated. Filter drains allow the run-off to soak away into the surrounding soil. Filter drains are filled with stones or gravel. This stone fill collects particles and helps to prevent pollutants from entering groundwater. You can use a filter strip or swale to reduce the level of pollutants entering the filter drain.
You can use filter drains for source control and to convey run-off between SUDS measures.
Filter strips and filter drains in Sustainable Drainage Systems (SuDS)
A day with Hydrology, SEPA's hydrometry unit is responsible for around 400 gauging stations and 350 rainfall monitoring sites. River gauging stations are important as they allow river levels to be monitored so flood events can be predicted and flood warnings sent out.
Brewing and Distilling Technical Drop-in Day: Waste, Water, Energy, Brewing and Distilling is booming due to high demand for quality Scottish beers and spirits. All this growth is also leading to a boom in food waste, energy and water use.
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