United Utilities has gone out to tender with an AMP8/9 framework contract for the supply of detention tanks with an estimated total value of £26. 72 million.

The water company intends to award a framework for the supply of foul water detention tanks which will be installed anywhere within its operating network. The purpose of the tanks is to reduce the demand put upon wastewater treatment works by creating extra storage capacity.

In periods of heavy flows, the Combined Sewer Overflows will spill into the tank - the water can then be pumped out of the detention tanks and sent to the wastewater treatment works during a period of lower demand. United Utilities said this will help to reduce the number of sewage spill incidents.

The company is looking for two types of tanks – a self-contained pre-formed ‘integrated’ type (typically for lower storage volume requirements) and a multi-tank ‘modular’ type (typically for higher volume requirements).

Bidders will be given the required outputs (volume of water to be stored) and a list of mandatory and desirable criteria. They will also be asked to provide a standard “off the shelf” solution rather than working to bespoke designs in order to assist with standardisation.

Contract term will be 96 months – no renewal options are available.

Time limit for receipt of tenders or requests to participate is 23 August 2024 – click here to access the tender documentation.