NO POC - Discharge to watercourse and / or infiltration

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Message last updated - Sunday 06^th April 2025

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Message last updated - Sunday 06^th April 2025

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New Scenario 1.jpg

Network Impact

A connection to the public surface water sewer network is not required as infiltration techniques or disposal to a watercourse is to be utilised. Therefore an assessment on the public sewer network is not required.

Alternative Disposal Options

i) Other drainage infrastructure

There may be highway drainage within the vicinity of your development that could accommodate the additional flow. Subject to agreement with the Highway Authority, a connection for surface water may be made under the provisions of Section 115 of the Water Industry Act, 1991.

ii) New drainage infrastructure and outfall

The alternative is that a new surface water sewer is constructed which is used to convey your surface water to a watercourse or as part of a SuDS scheme, where appropriate. Subject to the sewer being designed in accordance with the current version of Sewerage Sector Guidance, the sewer can be put forward for adoption by Anglian Water under Section 104 of the Water Industry Act 1991.

If the outfall is to a watercourse, the applicant may be required to obtain consent to discharge via the appropriate body in addition to approval of the drainage strategy from LPA. The applicant will also need to secure a Deed of Grant of Easement, in Anglian Water’s favour for the right to convey water into the watercourse in perpetuity from the riparian land owner, prior to a sewer requisition.

Installation of offside sewers

If your site has no means of drainage without party land then you may be able to requisition Anglian Water, under Section 98 of the Water Industry Act 1991, to provide a connection to the public sewer or an approved outfall for domestic drainage purposes. Guidance on sewer requisition under Section 98 is provided here.

Alternatively, you may wish to enter into a works agreement in accordance with Section 30 of the Anglian Water Authority Act 1977. This will allow you to design and construct the public sewer using Anglian Waters’ statutory powers in accordance with Section 159/168 of the Water Industry Act 1991.

Sewer Adoption

A new surface water sewer can be used as a mechanism to discharge surface water to a watercourse or as part of a SuDS scheme where appropriate. SuDS are classed as sewers; therefore, subject to them being designed in accordance with the Design and Construction Guidance (DCG) Sewerage Sector Guidance, the sewer can be put forward for adoption by Anglian Water under Section 104 of the Water Industry Act 1991.

A pre-design consultation service is available if you would like to further advice on the adoptable standards for SuDS features. View our Pre-design strategic discussion/assessment information.

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