714655452 - MSS/144 - Fresh Water and Technical Water Production

The procurement contact named on the official notice.

714655452 - MSS/144 – Fresh Water and Technical Water Production REQUIREMENT DE&S PPA has a requirement for In-Service Support of systems and equipments for the production of fresh (potable) water using reverse osmosis and distillation processes to support habitability including drinking water and hotel services for its maritime environment, and de-mineralised water for technical use in support of a number of Royal Navy master equipments.

The scope will initially include systems and equipments which are currently in service, with the option to include additional systems as they enter service.

The requirement will include the supply of permanent and consumable spares, repair and maintenance activities, technical and post design services (including obsolescence management), and supply chain management.

The Authority does not currently envisage that the requirement will be divided into Lots, however the Authority reserves the option to change this approach at any step/stage of the tendering procedure It is anticipated that the Tender Notice will be issued circa 15 December 2025.

Further information regarding the anticipated procurement schedule will be published in the Tender Notice when issued, however it is envisaged that any resultant contract will commence circa 01 September 2026 with an initial term of 3 years with three option periods of 2 years each.

The Authority also reserves the option to change this approach and add or remove steps/stages at any step/stage of the tendering procedure.

You must not take this announcement as confirmation that MOD shall award a contract for this requirement.

The MOD is publishing this announcement without any commitment to issue a tender or place a contract.

Accordingly, any expenditure, work or effort undertaken before contract award is a matter solely for the commercial judgement of potential suppliers For the purposes of Cyber Security, this requirement has been assessed as Low Risk (RAR 240731A02).

BACKGROUND Defence Equipment and Support (DE&S) is an arm’s length body of the Ministry of Defence, which delivers equipment and support services to the Royal Navy, British Army, and Royal Air Force.

DE&S play a critical role in keeping the United Kingdom safe and prosperous, and making sure the front-line have the right kit at the right time.

From fighter jets to food deliveries, from patrol boats to protective clothing, DE&S deliver effective and innovative kit to front-line forces.

Within the new DE&S structure, the Power Propulsion and Auxiliary (PPA) team has been set up as a technology area, working across different areas of defence to deliver and sustain systems that generate operational energy, to provide propulsion (e.g. prime movers/engines and transmissions fitted to platforms), and cross-cutting auxiliary systems, including life support, fire-fighting, medical, and catering equipment.

Preliminary Market Engagement (PME) was conducted during May 2025.

The Authority has completed it’s consideration of the outcomes of this engagement and is now preparing to issue a UK4 – Tender Notice for the purposes of conducting a Competitive Flexible Tender Procedure as regulated by the Procurement Act 2023.

It should be noted that the PME also explored how it may incorporate its water purification requirement for its Army master equipment, however the Authority does not currently plan to include the Army Master Equipment requirement within this procurement.

Previous notices can be found on Find a Tender Service under the following references: Procurement identifier (OCID): ocds-h6vhtk-0504d5 UK1 – Pipeline Notice: Notice Identifier: 2025/S 000-023114 Published: 20 May 2025, 11:27am Notice Title: 714655452 - MSS/144 - Water Purification Equipment - UK1 Pipeline Notice UK2 – Preliminary Market Engagement Notice: Notice Identifier: 2025/S 000-015905 Published: 17 April 2025, 1:23pm Notice Title: 714655452 - MSS/144 Water Purification Equipment