--- title: "Supply of nutrient neutrality mitigation for Stour Environmental Credits Limited" ocid: "ocds-h6vhtk-052bda" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-052bda" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-052bda.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-052bda.json" source: "Find A Tender Service" current_stage: "Award" buyer: "ASHFORD BOROUGH COUNCIL" published: "2025-08-18" --- # Supply of nutrient neutrality mitigation for Stour Environmental Credits Limited Buyer: ASHFORD BOROUGH COUNCIL Current stage: Award OCID: ocds-h6vhtk-052bda [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-052bda) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-052bda.json) ## Summary Ashford Borough Council, acting on behalf of Stour Environmental Credits Limited, has completed the procurement process for the supply of nutrient neutrality mitigation. This project, essential for supporting environmental improvements, involves converting existing septic tanks to high efficacy private package treatment plants (PTPs). The procurement, conducted under an open procedure, was finalised with an award on 18 August 2025, with the contract period starting on 1 October 2025 and ending on 1 October 2027. The contract, valued at £15 million, falls under the 'Environmental services' category and is destined for delivery within the UK, specifically in the South East region. This tender presents significant opportunities for small and medium-sized enterprises (SMEs) with expertise in environmental and wastewater management to expand their business profiles by supplying innovative solutions for nutrient mitigation. Companies equipped to handle the conversion of waste treatment systems into high-performance models are particularly well-suited for this endeavour. The awarded company, Norfolk Rivers Consortium Limited, exemplifies the type of business poised to leverage such contracts for fostering sustainable growth and enhancing service offerings in the UK environmental sector. ## Notice Ashford Borough Council are advertising this opportunity on behalf of Stour Environmental Credits (SEC). As part of the development of its nutrient mitigation portfolio SEC is seeking to appoint suitable providers/installers to convert existing septic tanks and private package treatment plants to high efficacy private package treatment plants (PTPs). The upgrade generates a nutrient offset/saving (both phosphorus and nitrogen) equivalent to amount of nutrients stripped out by the new private package treatment plant compared to the old septic tank. The successful bidder(s) (the Services Provider(s) in this Procurement will provide SEC with phosphorus and nitrogen offset/saving. SEC will then trade the nutrient offset/saving as 'credits' to housebuilders/developers who need to offset the additional nutrients arising from the new houses they intend to build. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/049376-2025 | | Notice type | UK6 - Contract Award Notice | | Procurement type | Standard | | Procurement category | Services | | Procurement method | Open | | Procurement method details | Open procedure | | Tender suitability | SME | | Awardee scale | SME | | All stages | Tender, Award | ## Dates | Field | Value | | --- | --- | | Publication date | 18 Aug 2025 | | Submission deadline | 15 Jul 2025 | | Future notice date | Not specified | | Award date | 14 Aug 2025 | | Contract period | 30 Sep 2025 - 1 Oct 2027 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £20,000,000 | | Lots value | £20,000,000 | | Awards value | £15,000,000 | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Complete | | Lots status | Complete | | Awards status | Pending | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | ASHFORD BOROUGH COUNCIL | | Locality | ASHFORD | | Post town | Tonbridge | | Postcode | TN23 1HU | | Country | England | | ITL 1 | TLJ South East (England) | | ITL 2 | TLJ4 Kent | | ITL 3 | TLJ45 Mid Kent | | Local authority | Ashford | | Electoral ward | Victoria | | Westminster constituency | Ashford | | Delivery location | TLJ4 Kent | ## Supplier | Field | Value | | --- | --- | | Number of suppliers | 1 | | Supplier names | NORFOLK RIVERS CONSORTIUM | ## CPV Codes ### Divisions - 90 - Sewage, refuse, cleaning and environmental services ### Codes - 90700000 - Environmental services ## Release History - 18 Aug 2025 at 09:22 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/049376-2025 - 23 Jun 2025 at 08:46 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/034264-2025 - 6 Jun 2025 at 09:51 - TenderUpdate - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/030487-2025 - 3 Jun 2025 at 15:58 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/029633-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/049376-2025 18th August 2025 - Contract award notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/034264-2025 23rd June 2025 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/030487-2025 6th June 2025 - Tender notice on Find a Tender - https://www.find-tender.service.gov.uk/Notice/029633-2025 3rd June 2025 - Tender notice on Find a Tender - https://www.kentbusinessportal.org.uk/ Procurement documents can be accessed via the Kent Business Portal. ## Notice URLs - https://nationalriversconsortium.com/ - https://www.burrow-environmental.com - 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-052bda. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-052bda.json.