--- title: "CM3540 Ozone Maintenance & Minor Capital Works" ocid: "ocds-h6vhtk-0784f5" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0784f5" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-0784f5.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-0784f5.json" source: "Find A Tender Service" current_stage: "Tender" buyer: "YORKSHIRE WATER SERVICES LIMITED" published: "2026-10-09" --- # CM3540 Ozone Maintenance & Minor Capital Works Buyer: YORKSHIRE WATER SERVICES LIMITED Current stage: Tender OCID: ocds-h6vhtk-0784f5 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0784f5) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-0784f5.json) ## Summary Yorkshire Water Services Limited is seeking specialist maintenance and minor capital works for its ozone-generation systems and related assets. The work covers planned and reactive maintenance, technical support and emergency response, including inspections, condition and performance assessments, fault diagnosis, breakdown repairs, critical-spares and obsolescence management, equipment replacement, refurbishment, upgrades and remediation. Mechanical, electrical, instrumentation, control and automation work may also be required, together with testing, commissioning, performance validation, warranty support and maintenance records and operating guidance. Major design-and-build capital schemes are excluded. Work is across Yorkshire Water’s ozone plant estate, with delivery locations spanning England, including the North East, North West, Yorkshire and the Humber, Midlands, East and South East, London and South West. The buyer invited suppliers to take part in a multi-stage competitive flexible tender under the Procurement Act 2023. Suppliers first submit a Conditions of Participation questionnaire; those meeting pass/fail selection criteria may be shortlisted, then review proposed contract terms before qualifying for the quality and commercial tender stage. The enquiry deadline was 27 October 2026 at 17:00 UTC, and the expression-of-interest deadline was 3 November 2026 at 17:00 UTC. The buyer planned to conclude evaluation by 14 January 2027. The single-supplier framework is scheduled to run from 1 April 2027 to 31 March 2030, with an extension possible up to 31 March 2032. Its stated value is £216,378,718 including VAT. There is one lot; quality and commercial criteria each carry 50% of the score. This opportunity suits specialist water-treatment plant maintenance and engineering businesses able to support ozone-generation equipment across a geographically broad estate. Suppliers need the technical range to inspect and assess assets, diagnose faults, repair breakdowns, manage critical spares and obsolescence, replace or refurbish equipment, and undertake upgrades and remediation. The scope may also suit firms with mechanical, electrical, instrumentation, control and automation expertise, including the ability to test, commission and validate performance. The framework calls for both planned work and responsive technical support, including emergency response, so bidders should be equipped to address urgent incidents as well as routine maintenance and minor capital work. Relevant experience and capability are expressly sought. Major design-and-build schemes fall outside this requirement; those are handled by Yorkshire Water’s Tier 1 suppliers. No specific accreditation or certification requirement is stated. ## Notice Yorkshire Water is conducting a Tender Notice to inform the development of a procurement strategy for specialist ozone maintenance and minor capital works across its ozone process-plant estate. The proposed framework will support end-to-end planned and reactive maintenance, technical support, emergency response and minor capital works associated with ozone-generation systems and related assets. This will include asset inspections, condition and performance assessments, fault diagnosis, breakdown repair, critical-spares management, obsolescence management, equipment replacement, refurbishment, upgrades and remediation. The scope may also include mechanical, electrical, instrumentation, control and automation works, testing, commissioning, performance validation, warranty support and the provision of maintenance documentation, asset data and operating guidance. Major design-and-build capital schemes are excluded from the framework and will be delivered through Yorkshire Water's Tier 1 suppliers. Suppliers with relevant experience and capability are invited to express interest and participate in the CoP. ### Lot Information Lot 1 Renewal: The contract may be extended subject to performance, regulatory requirements, and business need. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/095760-2026 | | Notice type | UK4 - Tender Notice | | Procurement type | Framework | | Procurement category | Services | | Procurement method | Selective | | Procurement method details | Competitive flexible procedure | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 9 Oct 2026 | | Submission deadline | Not specified | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 1 Apr 2027 - 31 Mar 2030 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £216,378,718 | | Lots value | £216,378,718 | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Active | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | YORKSHIRE WATER SERVICES LIMITED | | Locality | LEEDS | | Postcode area | Leeds | | Postcode | LS10 1AB | | Country | England | | ITL 1 | TLE Yorkshire and The Humber | | ITL 2 | TLE4 West Yorkshire | | ITL 3 | TLE42 Leeds | | Local authority | Leeds | | Electoral ward | Hunslet & Riverside | | Westminster constituency | Leeds South | | Delivery location | TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England) | ## CPV Codes ### Divisions - 45 - Construction work - 50 - Repair and maintenance services - 51 - Installation services (except software) - 71 - Architectural, construction, engineering and inspection services ### Codes - 45232430 - Water-treatment work - 45252120 - Water-treatment plant construction work - 45252126 - Drinking-water treatment plant construction work - 50530000 - Repair and maintenance services of machinery - 51100000 - Installation services of electrical and mechanical equipment - 71334000 - Mechanical and electrical engineering services - 71630000 - Technical inspection and testing services ## Release History - 9 Oct 2026 at 15:18 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/095760-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/095760-2026 9th October 2026 - Tender notice on Find a Tender ## Notice URLs - https://s1-eu.ariba.com/Sourcing/Main/aw?awh=r&awssk=fy5dbBftDhoBNSzh&realm=YorkshireWater& - https://www.legislation.gov.uk/ukpga/2023/54/contents ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0784f5. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-0784f5.json.