---
title: "WP6102 - Water Treatment for Cooling Towers - intrusive survey & design (All Terminals)"
ocid: "ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "COSTAIN LIMITED (H7-HEATHROW)"
published: "2025-10-16"
---

# WP6102 - Water Treatment for Cooling Towers - intrusive survey & design (All Terminals)

Buyer: COSTAIN LIMITED (H7-HEATHROW)  
Current stage: Tender  
OCID: ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e.json)

## Summary

Costain Limited (H7-Heathrow) is inviting tenders for the project titled "WP6102 - Water Treatment for Cooling Towers - intrusive survey & design (All Terminals)" under CPV classification 45252126, focusing on drinking-water treatment plant construction work. This procurement process is active, with a tender period ending on 22nd October 2025. The contract is scheduled to commence on 8th January 2026 and conclude on 31st October 2026. Located in London, United Kingdom, this project is ideal for service-based businesses. The procurement method includes conducting intrusive surveys and designing digital flow meters for the Honeywell Building Management System.

This tender presents growth opportunities for businesses specialising in project and design preparation, engineering design services, and water treatment solutions. Small and Medium Enterprises (SMEs) and Voluntary, Community and Social Enterprises (VCSEs) are encouraged to participate, with a procurement value ranging from £500,000 to £1,000,000. Companies in the engineering and construction sectors, particularly those offering water treatment and management solutions, would be well-positioned to compete for this tender.

## Notice

This scope covers intrusive surveys to determine the required replacement of faulty and end-of-life water treatment and pre-treatment assets for the condenser water circuits which serve the cooling towers. The scope also covers the survey and design for digital flow meters to be connected to the Honeywell Building Management System (BMS).

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/4cd59b03-4f81-4891-b092-1299840ebdbb |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 16 Oct 2025 |
| Submission deadline | 22 Oct 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 8 Jan 2026 - 31 Oct 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | COSTAIN LIMITED (H7-HEATHROW) |
| Locality | MAIDENHEAD |
| Post town | Slough |
| Postcode | SL6 4UB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ15 Berkshire East |
| Local authority | Windsor and Maidenhead |
| Electoral ward | Oldfield |
| Westminster constituency | Maidenhead |
| Delivery location | TLI London |

## CPV Codes

### Divisions

- 22 - Printed matter and related products
- 34 - Transport equipment and auxiliary products to transportation
- 45 - Construction work
- 71 - Architectural, construction, engineering and inspection services
- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 22314000 - Designs
- 34632100 - Mechanical signalling
- 45252126 - Drinking-water treatment plant construction work
- 45252127 - Wastewater treatment plant construction work
- 71242000 - Project and design preparation, estimation of costs
- 71320000 - Engineering design services
- 90733400 - Surface water treatment services

## Release History

- 16 Oct 2025 at 08:00 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/4cd59b03-4f81-4891-b092-1299840ebdbb

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/4cd59b03-4f81-4891-b092-1299840ebdbb
  16th October 2025 - Opportunity notice on Contracts Finder
- https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=101241265
  Please follow this link to view the notice.

## 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-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-fe8f127d-5155-418b-bda7-31dde8ee9e8e.json.