Guidance

Calculating dry weather flow (DWF) at waste water treatment works

How to calculate dry weather flow (DWF) as part of an environmental permit application or to vary an existing permit.

From:
Environment Agency
Published
8 May 2018

Documents

Calculating dry weather flow (DWF) at waste water treatment works

Ref: LIT 10951

HTML

Details

This guide is for operators of waste water treatment works (WWTW) that receive sewage and rainwater from combined sewers. It mainly applies to water companies and new appointments and variations (NAVs) who operate WWTW serving cities, towns and villages (agglomerations).

Updates to this page

Published 8 May 2018

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