---
title: "Pressurised pipe cleansing services - Water Industry"
ocid: "ocds-h6vhtk-04afe9"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04afe9"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04afe9.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04afe9.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "SEVERN TRENT WATER LIMITED"
published: "2024-10-22"
---

# Pressurised pipe cleansing services - Water Industry

Buyer: SEVERN TRENT WATER LIMITED  
Current stage: Planning  
OCID: ocds-h6vhtk-04afe9

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## Summary

```html

Severn Trent Water Limited is in the planning stage of a tender for pressurised pipe cleansing services, focusing on wastewater rising mains and clean water mains. This procurement falls under the sewer cleaning services category, classified under CPV code 90470000. The services are vital for maintaining water quality and preventing issues such as blockages and asset failures. The detailed scope includes cleansing wastewater pipes without significant disruption, with work expected mainly in the UK. The future notice date for this tender is set for 1st June 2025, and key contact for the buying organisation, Joanna Benson, can be reached via email.

This tender presents significant business growth opportunities for companies experienced in pressurised pipe cleaning, especially those capable of innovative solutions that minimise disruptions during maintenance. The contract suits businesses specialising in sewer and water system maintenance, offering a chance to engage with one of the UK's prominent water companies. Organisations able to provide effective cleansing techniques, handle flow management, and ensure high water quality standards post-cleaning will be well-positioned to compete for this tender.

```

## Notice

Severn Trent Water wishes to improve its ability to cleanse pressurised wastewater assets rising mains (RM) and clean water mains to address potential problems within its asset base. Failure to do this could otherwise result in wastewater assets presenting with rising main blockages, asset failure and lead to further problems such as blockages/pollution/sewer flooding. Within the clean water network this is to remove biofilms and the risk to water quality. Part of the solution to achieving this goal is to have a way of cleansing these pressurised pipes which, in some instances are >500m long and only have one means of insertion and one means of extraction sometimes ~2km away. STW would like to move into a proactive space for asset cleansing without causing disruption through asset failure. We currently do not have a similar solution within the business and are therefore looking to explore delivery solutions as part of this pre market engagement.

### Lot Information

Lot 1

Assumptions & Constraints * Wastewater rising mains are generally 80mm to 400mm in diameter and lengths typically range from ~500m to 2km, with some being 5km. They generally only have one access point on the RM and the intention is to cleanse the pipe without the need to cut in every 50-200m as would be required with traditional jetting techniques. * Connection points such as bower couplings and/or air valves are assumed to be present near the wastewater sewage pumping station (SPS) to allow insertion of pipe cleaning. Basic adjustments will be the responsibility of the contractor i.e. connection to or removal of bower, but significant adjustments of pipework will be the responsibility of STW. * The pipe material will have been identified prior to cleansing and it is expected that the cleansing will work on the majority of pipe materials. Asbestos may require additional H&S measures, and ductile iron mains, which typically experience galvanic corrosion may be excluded. * Flow and pressure (or assumed) will be provided prior to cleaning works and work is expected to be carried out within acceptable limits to prevent the cleansing works as not to risk, bursting the main. * Assets along the rising main length will be identified where present, especially where the RM length is >500m, although it is assumed that any assets do not have isolation valves present on the RM itself, rather only on the spur so unlikely to be of use for insertion/extraction. Where present these will be identified. Air valves should have been inspected/serviced prior to cleansing. * Rising mains will have been selected for cleansing on the basis there are restrictions assumed to be as a result of blockages / sedimentation, which the cleansing will remedy. * Flow management of existing flows to the SPS will be an important consideration. Solutions where the rising main can be kept in service are preferred, although solutions where reduced tankering can be used, or even isolation of the main itself for the duration of the cleansing. Flow management is the responsibility of STW unless otherwise agreed. * Customer management will be the responsibility of STW. * Traffic management will be the responsibility of STW. Access is expected to be available within 30m of the SPS or clean water insertion point, and access is also expected within 30m of the discharge/extraction point for removal of arisings. * Contractors will be responsible for Health & Safety and will comply with STW safe systems of work including confined spaces, where necessary. * For clean water sites it is assumed that STW operatives will isolate the sections of pipe prior to cleansing. They will also ensure the area is rezoned accordingly to ensure or customers are informed as necessary. * Following the cleansing of a water main, STW will take water quality samples to prove the main holds water that is 'good to drink', no taste & odour concerns, no chemical or biological residuals on the main before a return to service. * Extraction of waste arisings will be undertaken by the contractor so that the arisings do not pass down the system. Where the rising main discharges into a trunk sewer that goes directly to a large works this requirement may be forfeited. * The contractor will provide a written report within 2 weeks of completion with a description of the works, photos and results. This will be cross referenced with STW flow & pressure readings to demonstrate the benefits. Minimum Viable Product (MVP) Criteria Improvement in flow: The cleansing of the rising main must produce improvements in flow, (Reduction in pressure) and/or reductions in pressure. Sediment removal: The cleansing should demonstrate removal of arisings at the discharge. Flow/Pressure one week on: The improvement in flow/reduction in pressure should last more than 7 days. Failure to do so would suggest that cleansing is not the root cause of performance, rather pump issues, trapped air or other. Water Quality (Clean only): Reduction in coliforms (or other water quality metrics). ADDITIONAL CONSIDERATIONS The following considerations are not compulsory for the MVP, but would add to the value of the solution should they be incorporated into the design: * Management of flows whilst cleansing activities are undertaken * Ability to be re-located / re-used, and number of vehicles being used OTHER / OPERATING CONSIDERATIONS Consideration should also be given to the following environmental factors: * Ensuring the debris removed from cleansing works does not block the sewer INSTALLATION / EXTRACTION METHOD We are interested in hearing from Suppliers who have experience in pressurised pipe cleaning and would like to discuss further.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/034060-2024 |
| Notice type | Planning Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 22 Oct 2024 |
| Submission deadline | Not specified |
| Future notice date | 31 May 2025 |
| Award date | Not specified |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SEVERN TRENT WATER LIMITED |
| Additional buyers | HAFREN DYFRDWY CYFYNGEDIG |
| Locality | COVENTRY |
| Post town | Coventry |
| Postcode | CV1 2LZ |
| Country | England |
| ITL 1 | TLG West Midlands (England) |
| ITL 2 | TLG3 West Midlands |
| ITL 3 | TLG33 Coventry |
| Local authority | Coventry |
| Electoral ward | St Michael's |
| Westminster constituency | Coventry South |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 45 - Construction work
- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 45259100 - Wastewater-plant repair and maintenance work
- 90470000 - Sewer cleaning services

## Release History

- 22 Oct 2024 at 08:38 - Planning - Planning Notice - https://www.find-tender.service.gov.uk/Notice/034060-2024

## Notice URLs

- http://www.hdcmyru.co.uk
- http://www.stwater.co.uk

## 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-04afe9. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04afe9.json.