We calculate your site area charging band using a number of information sources, from digital mapping systems to publically available Ordnance Survey maps.
To determine your chargeable area, we:
Once your chargeable area is calculated, a site area charging band is assigned to your premises. This determines how much you pay for your surface water drainage charges. Download our charges at a glance leaflet (PDF download) to view the site area charging bands.
Please note: Any area that has a surface water connection to a public sewer, even if it is permanently grassed, cultivated or landscaped will still be chargeable and included in the measurement of the chargeable area. Public highways are excluded from our measurements where they fall within the site boundaries.
Our efficiency pages contain lots of information and tips on how you can save.
If you are unable to access your map, you think we have put your premises in the wrong site area charging band, or have any other questions about your chargeable area, please call us on 0345 072 6072 or fill in our online form, and we’ll get back to you.
Want to know more about our tariffs and charges? For more information see our charges at a glance 2017/2018 (PDF download) or for all tariffs and charges for business customers you can download our full charges scheme for 2017/18 here (PDF download).
Just enter your postcode and we’ll have a quote for you in no time.
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