Water and wastewater services for Kent, Sussex, Hampshire and the Isle of Wight
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Build over public sewer

By law, nobody has a right to build over, or close to, a public sewer.

A minimum distance of three metres (for apparatus up to three metres deep) must be maintained between any building and the public apparatus. This minimum distance may increase for deep or large diameter pipework.

However, we appreciate the desire of homeowners to extend their properties and will, in some cases, depending on the status of the sewer, allow buildings to encroach upon the public system.

Water mains

Please note, however, that building over, or close to, water mains will never be permitted; neither will building over, or close to, proposed or existing sewers on new developments or redevelopments.

Please refer to the guidance notes to assist in completing the application.

Please complete an application form, then print it out and send your complete submission to:

Developer Services
Southern Water
Southern House
Hampshire, SO21 2SW

Alternatively, an application to divert a Public Sewer may be made.

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