Water Mains Application for Capacity Check
Southern Water provides an optional Capacity Check service to assist developers in identifying possible constraints that may be associated with servicing a development site. The Capacity Check can assist developers in understanding the potential costs and timescales involved in servicing a site prior to land acquisition or the submission of a planning application. The results of the Capacity Checks are for information only and should not be regarded as an approval or rejection of your proposals, nor should the results be used as a basis for design.
Please also note that Southern Water is currently consulting on the New connections charging
as directed by Ofwat. Please read through these documents as they may affect your development site in the future.
Level 1 – Preliminary Fresh Water Capacity Check
This is a simple check that will identify whether the required
capacity is available adjacent to or close to the proposed
development. Should capacity not be available, you will be
provided with an indication of the nearest point at which
capacity is available. It should be noted that a charge will be made for any
Should lack of capacity be identified a Level 2 Indicative Hydraulic Assessment can be considered.
We will endeavour to provide you with a written reply within
15 working days of receipt of a complete application. If we
are unable to do this you will be contacted and given the
The results of the Level 1 Preliminary
Capacity Check do not necessarily provide an identified
solution for servicing the proposed development site. The
Level 1 Check is aimed at simply providing an indication
of whether capacity is available. Please refer to the application form for the fee required. This service is only available for developments which are
less than 500 units. The impact of a development greater
than 500 units is substantial and the more extensive Level
2 Indicative Hydraulic Assessment (see next section) is
required. Should you wish to take advantage of this service, please
complete the Capacity Check Application Form and submit together with the appropriate fees and drawings.
Level 2 – Indicative Hydraulic Assessment
This is a more in-depth service. In addition to identifying
the nearest point of capacity, (as per the Level 1 Preliminary
Capacity Check) this service will identify an indicative
hydraulic assessment for servicing the site.
We will endeavour to provide you with a detailed report
within 25 working days of receipt of a complete application.
If we are unable to do this you will be contacted and given
the reason why.
Please refer to the application form for the fee required.
Should you wish to take advantage of this service, please
complete the Capacity Check Application Form and submit
together with the appropriate fees and drawings.
Level 1 and Level 2 Capacity Checks do not
provide indicative costs of the works required to service the
site, nor of the construction works required.
The contents of the report are for direct
use only by the applicant and are to be kept private and
confidential. They may only be disclosed to third parties
with the written approval of Southern Water. Such third
parties to have no subsequent implied or other right to
disclose the contents and information to any other parties.