Awarded 5 October 2026
Heat-transfer additives associated with decarbonisation technologies
Fife Council · Scotland
Chemical water treatment tenders and contracts
UK public sector, covering 600+ buyer sites
75 contracts awarded in the 24 months to 12 October 2026
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Updated 12 October 2026 · compiled by BidSkim Limited · How we count
Chemical water treatment contracts ,
75 contracts across the UK, of any size
Recently awarded
The latest chemical water treatment contracts awarded
Awarded 17 September 2026
UKRI-6353 MRC LMS Side Stream Filtration
UK Research and Innovation (UKRI) · London
Awarded 25 August 2026
Maintenance Contract for Steam Boiler Water Treatment
QE Facilities Ltd
Awarded 3 August 2026
Maintenance of Water Treatment Systems including Supply and Delivery of Salt relating to a range of Hospital Equipment including Decontamination and Renal Equipment, Chemical and Microbiological Water Testing and Provision of Associated Testing Consumables
Belfast Health and Social Care Trust · Northern Ireland
Awarded 29 July 2026
Water For Injection (WFI) System Shutdown and Maintenance
Cell and Gene Therapy Catapult · London
Who wins · 24 months to October 2026
Veolia won the most chemical water treatment contracts
Waterman Environmental Services Limited won the most by value. Each dot is one contract, coloured by who bought it.
CouncilsHousing associationsNHS and healthSchools and collegesOther public bodies
| Rank | Contractor | Contracts won, by buyer | Contracts | Value won | Buyers | Share |
|---|---|---|---|---|---|---|
| 1 | Veolia North East · See every contract | 11 | £740k | 9 | ||
| 2 | PROECONOMY LIMITED South West · SME · See every contract | 6 | £618k | 5 | ||
| 3joint | Waterman Environmental Services Limited East of England · SME · See every contract | 3 | £1.1m | 2 | ||
| 3joint | Avidity Science South West · SME · See every contract | 3 | £83k | 3 | ||
| 3joint | Envirogen Group North East · SME · See every contract | 3 | £46k | 3 | ||
| 6joint | Pure H2O Limited London · SME · See every contract | 2 | £756k | 2 | ||
| 6joint | VANTIVE LIMITED London · See every contract | 2 | £710k | 2 | ||
| 6joint | Enwa Water Technology London · See every contract | 2 | £347k | 2 | ||
| 6joint | Integrated Water Services West Midlands · See every contract | 2 | £156k | 2 | ||
| 6joint | Pulsar Measurement South West · See every contract | 2 | £48k | 1 |
39 more chemical water treatment contractors ranked. See the full ranking →
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Who buys
NHS and health award 57% of chemical water treatment contracts
Schools and colleges buy the bigger jobs, at a median of £85k against £38k. Contracts with a published value in the last 24 months, from the type of buyer to the size of the contract.
10 buyers bought chemical water treatment more than once in the last 24 months
Each dot is a buyer, by how many chemical water treatment contracts it awarded in the last 24 months.
See who they are and when they usually buy →
Few and big, or many and small
Each dot is a buyer: how many chemical water treatment contracts it awarded against what they were worth. The busiest and biggest are named.
CouncilsHousing associationsNHS and healthSchools and collegesOther public bodies
Top buyers by contracts awarded
| Rank | Buyer | Contracts | Value |
|---|---|---|---|
| 1 | UK Research and Innovation (UKRI) | 7 | £236k |
| 2 | QE Facilities Ltd | 5 | £182k |
| 3 | West Hertfordshire Teaching Hospitals NHS Trust | 4 | £193k |
| 4 | Hull University Teaching Hospitals NHS Trust | 4 | £115k |
| 5 | East and North Hertfordshire Teaching NHS Trust | 3 | £1.2m |
| 6 | Gloucestershire Hospitals NHS Foundation Trust | 3 | £337k |
| 7 | Somerset NHS Foundation Trust | 3 | £174k |
| 8 | Fife Council | 2 | £1.1m |
| 9 | Nottingham City Council | 2 | £445k |
| 10 | Bradford Teaching Hospitals NHS Foundation Trust | 2 | £357k |
Prices
Half of chemical water treatment contracts are worth less than £48k
Every contract with a published value, on a log scale, coloured by who bought it.
CouncilsHousing associationsNHS and healthSchools and collegesOther public bodies
The 10 biggest contracts hold 68% of the money
Coloured by who bought it.
- Belfast Health and Social Care TrustVeolia, Chemical Treatment Services Ireland Ltd, Theatre And Endoscopy Service Technicians Ltd · 3 Aug 2026
- University of BathWCG ENVIRONMENTAL LTD · 3 Apr 2025
- University of EdinburghProtech Heating Limited · 11 Mar 2026
- BANK OF ENGLANDE & B Group Ltd · 28 Oct 2025
- East and North Hertfordshire Teaching NHS TrustWaterman Environmental Services Limited · 23 Mar 2026
- University of SouthamptonPure H2O Limited · 14 Oct 2024
- Fife CouncilWinner not published · 5 Oct 2026
- Fife CouncilWinner not published · 5 Oct 2026
- Vico HomesHEVASURE LTD · 20 Apr 2026
- NHS Wales Shared Services PartnershipVANTIVE LIMITED · 14 Mar 2025
Where and when
The South West awards the most chemical water treatment contracts
Contracts by region and by month awarded. Click a region to filter the page.
FewerMore contracts
See the regions as a table
| Region | Contracts | Value |
|---|---|---|
| South West | 13 | £1.8m |
| East of England | 8 | £1.3m |
| North East | 7 | £226k |
| Yorkshire and the Humber | 7 | £959k |
| South East | 7 | £1.1m |
| London | 5 | £1.2m |
| West Midlands | 4 | £116k |
| Scotland | 4 | £2.1m |
| East Midlands | 3 | £103k |
| North West | 2 | £31k |
| Wales | 2 | £481k |
| Northern Ireland | 2 | £3.9m |
Often bought with chemical water treatment
Related services
Deadlines
Half of chemical water treatment tenders close within 27 days of being published
Each dot is a chemical water treatment tender published across the UK in the last 24 months, by how many days it was open. 76% closed within a month. Spot one a week late and 26% of the time to respond has gone.
Hear about new chemical water treatment tenders the moment they're published →
Key findings
- 27 days
is how long the typical chemical water treatment tender is open, from publication to deadline.
Median of 17 UK chemical water treatment tenders published in the last 24 months. - 68%
of the money is in the 10 biggest chemical water treatment contracts.
Of 70 contracts with a published value. - 60%
of chemical water treatment contracts are won by SMEs.
As recorded by the buyer, on 67 award notices.
Questions
How many chemical water treatment contracts does the UK public sector award?
75 in the 24 months to 12 October 2026, from 49 public buyers.
How long are chemical water treatment tenders open for?
The median chemical water treatment tender is open for 27 days from publication to deadline.
How much is a typical public sector chemical water treatment contract worth?
The median is £48k, and 79% are worth less than £250k.
Who wins the most public sector chemical water treatment contracts?
Veolia won the most (11). Waterman Environmental Services Limited won the most by value (£1.1m).
Which buyers award the most chemical water treatment contracts?
NHS and health award 57% of them.
What is included
Chemical water treatment and dosing of boiler, heating and cooling systems, and supply, installation and servicing of water treatment equipment such as softeners and reverse osmosis units.
- Boiler water treatment and chemical dosing
- Water softener and RO unit servicing
- Boiler house water testing
- Water treatment plant installation in buildings
What is not included
- Legionella control of domestic water systems (con.mech.water-hygiene)
- Public water and wastewater networks and small treatment plants (con.civils.water-sewer-networks, con.civils.pumping-stations)
- Swimming pool plant and water treatment (con.mech.swimming-pool-plant)