Scope
Reference
714655452 - MSS/144
Description
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
Total value (estimated)
- £65,000,000 excluding VAT
- £74,500,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 1 September 2026 to 31 August 2029
- Possible extension to 31 August 2035
- 9 years
Description of possible extension:
Initial term of 3 Years with 3 Option Periods of 2 Years each, constituting a contract term of 9 Years if all 3 Options are taken-up
Options
The right to additional purchases while the contract is valid.
The scope will initially include systems and equipments which are currently in service, with the option to include additional Fresh Water and Technical Water Production systems as they enter service.
Main procurement category
Goods
CPV classifications
- 41120000 - Non-drinking water
- 41110000 - Drinking water
- 42912300 - Machinery and apparatus for filtering or purifying water
- 42912310 - Water filtration apparatus
- 42912330 - Water-purifying apparatus
- 51514110 - Installation services of machinery and apparatus for filtering or purifying water
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Publication date of tender notice (estimated)
15 December 2025
Submission type
Requests to participate
Deadline for requests to participate
14 January 2026, 11:59pm
Tenders may be submitted electronically
Yes
Languages that may be used for submission
English
Award decision date (estimated)
21 August 2026
Procedure
Procedure type
Competitive flexible procedure
Special regime
Defence and security
Contracting authority
Defence Equipment and Support
- Public Procurement Organisation Number: PVRL-5831-GLMM
MOD Abbey Wood
Bristol
BS34 8JH
United Kingdom
Contact name: DES Commercial-PPA (Multiuser)
Email: descommercial-ppa@mod.gov.uk
Website: https://www.gov.uk/government/organisations/defence-equipment-and-support
Region: UKK12 - Bath and North East Somerset, North Somerset and South Gloucestershire
Organisation type: Public authority - central government