Site area charging is the name we give to how we calculate your charges for a service we call surface water drainage and highway drainage. These are two elements of your wastewater bill.
Site area charging takes into consideration the chargeable area of your premises, which is the total site area of your premises (whether or not the surface is permeable) but excludes any permanently grassed, cultivated or landscaped areas. Examples of excluded areas are playing fields, farmland, racecourses, sports grounds, golf courses, parklands or areas of land on which no building is by law permitted.
For an explanation of how we calculate your site area measurement, read this.