Water & Sanitation Tenders in the United Kingdom

Find tenders and grants for water supply, sanitation and hygiene (WASH), wastewater treatment, desalination, irrigation and integrated catchment management. Curated for water engineering firms, WASH NGOs, desalination and treatment plant operators, and irrigation contractors.

1,045 open opportunities in this category

Who this is for

Water engineering consultancies, WASH NGOs, desalination and treatment operators, irrigation contractors, utility operators.

Top Funders

Major sources of procurement and grant funding in this category:

World Bank

Water Global Practice and GWSP trust fund.

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AfDB

African Water Facility.

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ADB

Water Financing Programme.

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UNICEF

WASH procurement for humanitarian response.

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USAID

Water Security, Sanitation and Hygiene Partnership.

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Water & Sanitation Opportunities

Here is a selection of recent tenders and grants. Register for free to view all water & sanitation opportunities.

Water & Sanitation Tenders

Radiation and Tritium Safety Diagnostics

TENDER Open

United Kingdom £1.0M 22 Oct 2026 (Closes in 24 days) T064MN26

equipment to be delivered to Culham Campus. This tender is split into 2 different lots. Suppliers can quote for one or both lots.

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Low Code No Code Platform

RFP Open

United Kingdom £1.0M 23 Dec 2026 (Closes in 86 days) TC2538

Thames Water is seeking to complete a tender to select and implement a modern Enterprise Low-Code/No-Code (LCNC) Platform to accelerate digital transformation, enable business-led innovation, and modernise how applications, workflows, automations, and business solutions are developed and managed across the organisation. The opportunity lies in selecting an LCNC platform that will: Enable Enterp...

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Lenham Cemetery Road Surfacing Project

TENDER Open

United Kingdom 6 Nov 2026 (Closes in 39 days) ocds-h6vhtk-077966

Levelling and widening of the cemetery road. Please see attached documents for full details including specification and diagrams.

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Maidstone Road Car Park Resurfacing

TENDER Open

United Kingdom 6 Nov 2026 (Closes in 39 days) ocds-h6vhtk-077975

Total refurbishment of the car park and drainage system. Further detail is included in the spec and added diagrams/documents.

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Feasibility assessment of bioclimate vulnerability approaches for priority marine migratory species in the Caribbean and Pacific UK Overseas Territories

TENDER Open

United Kingdom £51K 20 Oct 2026 (Closes in 22 days) C26-0301-2363

Project Aims To assess the feasibility of applying bioclimate vulnerability assessment approaches to priority marine migratory species within the Caribbean UK Overseas Territories and the Pitcairn Islands. Building on previous work undertaken for JNCC, the study will evaluate the suitability of the proposed bioclimate vulnerability approach, consider relevant alternative approaches where approp...

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Supply and Maintenance of Irrigation Systems, Ponds, Lakes, Water Features, and Drinking Fountains

TENDER Open

United Kingdom 23 Oct 2026 (Closes in 25 days) ocds-h6vhtk-0779f4

To service/maintain Irrigation requirements to 10x Bowls Clubs , 27x Drinking Fountains, 2x Children's Splash Pads .Polish War Memorial Water Feature Fountains and Pump 4x Ponds and 1 x Lake with Aerators within London Borough of Hillingdon. This will include Recommissioning for Spring/Summer and Decommissioning for Winter and General Maintenance/Repairs/Replacement parts during the Season

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Apprentice Worker Agency

RFP Open

United Kingdom £24.5M 24 Dec 2026 (Closes in 87 days) NW3207

Northumbrian Water Group (NWL) is committed to developing future talent through a high-quality apprenticeship programme which supports workforce planning, succession management and skills development across the organisation. We require a supplier to provide Apprenticeship Agency Services across both Northumbrian Water and Essex & Suffolk Water. The supplier will act as the employer of apprentic...

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TWBC Property Term Contract 2027 - Lots 3A, 3B, 3C & 4 (Mechanical, HVAC, Water Hygiene & Lift Maintenance)

TENDER Open

United Kingdom 19 Oct 2026 (Closes in 21 days) ocds-h6vhtk-077996

Tunbridge Wells Borough Council (TWBC) is looking to procure for Planned Maintenance (PPM), Statutory Compliance, Emergency Call Out, Responsive Repairs and Minor Building Maintenance Works to Council buildings throughout the Borough. The tender consists of 4 specialist Lots. The lots are as Follows: Lot 3A (Heating and Mechanical), Lot 3B (HVAC Controls and Renewables), Lot 3C (Water Hygiene a...

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EPC Certification Service Contract

TENDER Open

United Kingdom £35K 15 Oct 2026 (Closes in 17 days) ocds-h6vhtk-077ae4

Croydon Council is looking for a supplier to provide EPC Certification Service Contract. This opportunity is available on the Croydon Tenders Portal. https://supplier.in-tend.co.uk/croydontenders/home

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EPC Certification Service Contract

TENDER Open

United Kingdom 15 Oct 2026 (Closes in 17 days) LBC/TN/820

Croydon Council is looking for a supplier to provide EPC Certification Service Contract

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Refurbishment of Existing KS2 toilets and New Resource Room, Temple Meadow School,

TENDER Open

United Kingdom 27 Nov 2026 (Closes in 59 days) SKD 223

Ref: SKD 223 The Council will be using the In-tend e-Tendering System for this Procurement exercise, please visit https://in-tendhost.co.uk/sandwellmbc to access the Sandwell MBC In-tend Supplier Portal. From here you will be able to register your company, express an interest in the opportunity, and gain immediate access to Quotation or other related documents. To submit a quotation you will be...

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National Trust -NI- Marine Salvage of Vessels and Debris located in Strangford Lough

TENDER Open

United Kingdom, Northern Ireland £15K 15 Oct 2026 (Closes in 17 days) ESOP1000127

The National Trust is seeking experienced marine salvage and environmental contractors to remove and appropriately dispose of a number of abandoned vessels and marine debris sites located around Strangford Lough. The project aims to restore affected shoreline and seabed areas to their natural condition while protecting the Lough's internationally important habitats and wildlife. Contractor...

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Mains replacement & Associated works

TENDER Open

United Kingdom 31 Aug 2032 (Closes 2032) ocds-h6vhtk-07787e

This QUDM will provide a platform for Local Delivery Partners (LDP's) to support the delivery of our Planned Gas Mains and Services works, primarily focused on the delivery of Mains Replacement (MRP) and Non-Mains Replacement Programs (Non-MRP) and other related gas mains and services works, including but not limited to customer connections, reinforcements, built-over mains, services and associ...

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GB-Colchester: 0502 - PA Unadopted Highways

TENDER Open

United Kingdom, East of England £5.0M 21 Oct 2026 (Closes in 23 days) BIP1067259319

Significant repairs to the public hard surface areas on the un-adopted highway within the Colchester Borough.

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A66 Northern Trans-Pennine (NTP) - Warcop MoD Pre-Construction ECI, Temp Works & Flood Modelling

TENDER Open

United Kingdom £2.0M 23 Oct 2026 (Closes in 25 days) 7c7ee864-fe01-4f2b-b26d-a63eef568b0f

Kier Infrastructure is looking for a competent Consultant/Subcontractor for the reprovision, Pre-Construction ECI (review of design and constructability input, pricing, programming and coordination with suppliers), Temporary Works Flood Modelling for MoD Warcop. We will use the Build UK Common Assessment Criteria (CAS) to ensure a consistent minimum business competence. If your company possesse...

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2026TCCH-16 - Water Mains

TENDER Open

United Kingdom £1.0M 22 Oct 2026 (Closes in 24 days) 089709-2026

The replacement, renewal, diversion, installation, testing, commissioning and associated activities required to provide compliant domestic water service connections as described within the Scope of Works.

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ITT - Review of monitoring options for climate-threatened assets - UID 345

TENDER Open

United Kingdom £15K 27 Oct 2026 (Closes in 29 days) PREF 00000614

This project will help Historic England to provide advice for asset owners and managers whose assets are threatened by climate change on methods for continuous and long-term monitoring of their sites. Historic England will use the results of this project to prepare advice that will help owners and managers to identify trigger points for changes in management approach to increase resilience or m...

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PRO005158-Services-Contract-System Integrator : Billing and CRM

TENDER Open

United Kingdom £10.0M 18 Dec 2026 (Closes in 81 days) PRO005158-Services-Contract-SI

System Integrator (SI) to support the implementation of the target end state for United Utilities. The appointed supplier will be responsible for delivering end-to-end systems integration services, including solution design, configuration, integration, data migration, testing, deployment, transition to the future-state operating model, hypercare, and ongoing support and maintenance. As a critic...

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New Allotment Site - Tuttles Lane West, Wymondham - Site Infrastructure Works

TENDER Open

United Kingdom £95K 16 Oct 2026 (Closes in 18 days) WTC-ALL-TLW-2026

Wymondham Town Council is inviting competitive tenders for site infrastructure works associated with the proposed new allotment site at Land North of Tuttles Lane West, Wymondham, Norfolk, under planning application 2026/2374. The works comprise: Package A: site entrance from Tuttles Lane West, access road, passing places, formation, sub-base, surfacing, drainage, reinstatement and shared car p...

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Water Cycle Study Stage 1 and 2

TENDER Open

United Kingdom 5 Oct 2026 (Closes in 7 days) 2882-TEN-O

East Suffolk District Council, West Suffolk Council, Babergh and Mid Suffolk District Council and Ipswich Borough Council are seeking to commission a combined Water Cycle Study. A Water Cycle Study is required to understand the water infrastructure requirements necessary to support growth options in the Local Plans and any implications for the water environment. The Stage 1 study will assess cu...

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Strategic Environmental Assessment and Habitats Regulations Assessment for Slough new Local Plan v.1

TENDER Open

United Kingdom 6 Oct 2026 (Closes in 8 days) SBC - 039218

Slough Borough Council (Council) requires a suitably qualified and experienced consultant to undertake: Strategic Environmental Assessment (SEA) and Habitats Regulations Assessment (HRA).

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SBC0826 athletics track refurbishment works at ridlins stadium, stevenage

TENDER Open

United Kingdom 5 Oct 2026 (Closes in 7 days) CCD01862

Stevenage Borough Council are currently seeking tenders for the provision of ATHLETICS TRACK REFURBISHMENT WORKS AT RIDLINS STADIUM, STEVENAGE This procurement is a below threshold advertised tender . Organisations wishing to take part in this project are invited to ‘express an interest’ and also ‘opt in’ which will give access to the full tender documents in the e-tendering system. Mandatory s...

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607 West Horndon Station Footbridge FSS2/59 Renewal

RFP Open

United Kingdom £4.5M 23 Dec 2026 (Closes in 86 days) c2c 194

Full replacement of existing station footbridge between Platforms 1&2 at West Horndon Station, with new covered Beacon station footbridge including passenger lifts.

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Rotherham Local Area Energy Plan

TENDER Open

United Kingdom 30 Oct 2026 (Closes in 32 days) 25-119

This procurement is for a Rotherham local area energy plan, or 'LAEP'. A Rotherham LAEP will be expected to deliver the following:  • Stakeholder Engagement with primary and secondary external stakeholders • Data collection and analysis • Modelling scenarios and pathways to net zero local area carbon dioxide emissions from the energy system in Rotherham. • Identifying, prioritising and refining...

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Event Noise Monitoring Services

TENDER Open

United Kingdom £251K 21 Oct 2026 (Closes in 23 days) 749-NYC-CD

The Council is looking to procure Event Noise Monitoring Services. This service will be carried out by qualified and experienced noise consultants at Scarborough Open Air Theatre. Noise monitoring is a mandatory planning and premises licence condition for amplified music events at the venue and is required to ensure events are delivered in a manner that prevents public nuisance and protects nea...

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Water & Sanitation Grants

Community, Convening & Collaboration for Accelerator Awardees

Open Equity GB WT-RFP-11614

United Kingdom 23 Oct 2026 (25 days left)

Seeking an experienced partner to design, deliver and steward a multi-year community, convening and collaboration programme for Wellcome Accelerator Awardees, supporting connection, opportunity, collaboration and long-term career progression. Suppliers should view the RFP through the Oracle portal, where they should also submit any questions.

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Frequently Asked Questions

Who issues water tenders most frequently?

Municipal water utilities, ministries of water and sanitation, river-basin authorities, and donor-funded PMUs under World Bank, AfDB and ADB projects.

Are WASH grants available to private companies?

Yes — innovation grants from Grand Challenges Canada, USAID DIV, and IFC TechEmerge support private-sector WASH solutions, though most grant flows still run through NGOs and government.

Water & Sanitation Tenders in the United Kingdom

Who this is for

Top Funders

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