Companies wholly or mainly in Wales

In the area covered by Dŵr Cymru Welsh Water, where Section 42 has been implemented a range of new model agreements have been drafted:

  • A full agreement for large developments with provision for phasing
  • A simplified agreement for smaller developments (2- 10 domestic properties with a  single phase)
  • A short form agreement where there is only a gravity lateral drain (single property)

A copy of these model agreements will be available here shortly. in the meantime, please visit Dwr Cymru Welsh Water website.

This is a new process and the Water and Sewerage Companies would welcome your comments. If you would think this process can be improved please let us know by emailing

Companies wholly or mainly in England

In the areas covered by other Water and Sewerage Companies, where Section 42 of the Flood and Water Management Act has not been implemented, the existing process published in Sewers for Adoption 6th edition is still applicable. A copy of this model agreement can be downloaded here.