Sewage treatment and disposal where there is no foul sewer, PPG4

How to comply with environmental law and prevent pollution when treating and disposing of sewage where no foul sewer is available.

This publication was withdrawn on

All pollution prevention guidance (PPGs) that was previously maintained by the Environment Agency has been withdrawn from use and can now be found on The National Archives.

Pollution prevention guidance contained a mix of regulatory requirements and good practice advice. The Environment Agency does not provide ‘good practice’ guidance.

Current guidance explains how to: report an environmental incident, get permission to discharge to surface or groundwater, manage business and commercial waste, store oil and any oil storage regulations, discharge sewage with no mains drainage, work on or near water and manage water on land.


(PPG4) Treatment and disposal of sewage where no foul sewer is available

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Pollution Prevention Guidance 4 (PPG4) provides advice to domestic properties on choosing, installing and maintaining septic tanks, package treatment plants and drainage fields, where no foul sewer is available for use.

Published 1 July 2006