The Mogden Formula calculates the charges water companies apply to industry for the conveyance and treatment of effluents discharged to the public wastewater network. These charges are based on the limits agreed with the company in its Trade Effluent Consent.
There are two versions of the Mogden Formula tool, an online version and a Microsoft® Excel-based tool. Both tools are identical in their operation. The tools use water companies' standard tariffs, but if you are a large water user there is an 'other tariffs' option which allows you to enter industrial tariffs.
Each tool also allows the user to investigate the impact of modifying specific aspects of the effluent on the cost to discharge. For example, the flow, COD and SS can all be modified independently to investigate whether a preliminary treatment system may be a cost-effective option to consider.
The Mogden Formula tool has been updated to include the new trade effluent charges for 2009-2010 that are applied by the water companies in England and Wales, Northern Ireland and Scotland. The tool also includes data from the previous year so that comparisons can be made between water companies' charging tariffs.
Click here to use the online version of the tool now.
or
Click here to download the Excel version of the tool.
If you don't have excel installed on your PC, you will be able to view and print this document by using an excel viewer available free from Microsoft. You can download it by visiting http://www.microsoft.com/downloads/details.aspx?FamilyId=C8378BF4-996C-4569-B547-75EDBD03AAF0&displaylang=en.
If you use the Excel version of the tool, we recommend that you save it to your computer rather than open it online, to do this right click the download link and select 'Save As'.
For Excel 2000 and higher versions, you will need to make sure the Tools Macro Security setting in Excel is set to 'low' before you open the spreadsheet.