BidSkim
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Service market

Water quality monitoring contracts

UK public sector · 67 contracts awarded in the 12 months to 6 October 2026

Covering 600+ buyer portals · 5 years of records · Updated 6 October 2026 · How we count

Contracts awarded
67
Last 12 months
Median contract
£62k
Recorded value
Recorded value
£50.0m
64 of 67 main-service contracts have a published value
Buyers
30
Suppliers
45

BidSkim assigns contracts to services from the notice text. How services are assigned

What stands out

  • The five suppliers that won the most water quality monitoring contracts took 40% of them (27 of 67).
  • The median contract, £62k, is 34% below the median across waste & environment contracts (£95k).
  • South East had the most contracts: 12, or 18% of the total.

Who buys water quality monitoring

By contracts awarded, the 12 months to 6 October 2026.

  1. 1National Oceanography Centre8 contracts
  2. 2UK Research and Innovation (UKRI)6 contracts
  3. 3Environment Agency5 contracts
  4. 4Nuclear Restoration Services5 contracts
  5. 5CEFAS5 contracts
  6. 6Scottish Government5 contracts
  7. 7Natural England4 contracts
  8. 8Northumbria University3 contracts
  9. 9NI Water and its subsidiaries2 contracts
  10. 10Agri-Food and Biosciences Institute2 contracts

Top water quality monitoring contractors by contracts won

The 12 months to 6 October 2026.

  1. 1PLANET OCEAN LIMITED9 contracts
  2. 2RS Aqua Ltd6 contracts
  3. 3WSP4 contracts
  4. 4UDlive Limited4 contracts
  5. 5Nortek4 contracts
  6. 6Saderet Limited3 contracts
  7. 7Lab & Process Instrumentation Ltd2 contracts
  8. 8RPS1 contract
  9. 9SIRIS FLOW INSPECTIONS LTD1 contract
  10. 10Land & Water1 contract

Latest and largest awards

Each links to the official notice.

Latest

Largest

Contracts awarded by quarter

12Q4 2025*30Q1 202612Q2 202612Q3 20261Q4 2026*
* part quarter

Where the contracts were awarded

England 52 · Scotland 7 · Northern Ireland 6 · Wales 2

South East12South West10London8East of England6Northern Ireland6North East4East Midlands3West Midlands3North West2Wales2Scotland2UK-wide or not stated9

What is included

Monitoring of rivers, estuaries, groundwater, catchments and coasts: water quality sondes and continuous monitors, sampling programmes, final effluent monitoring stations, and river level, flow, rainfall and tide gauges with maintenance and data.

  • Continuous river water quality monitoring
  • Water quality sensors, sondes and buoys
  • Estuary water and sediment monitoring
  • Final effluent monitoring stations
  • River level and flow monitors
  • Rain gauges and pressure sensors
  • Tide gauge maintenance and data
  • Catchment hydrological monitoring
  • Coastal sediment transport monitoring
  • Groundwater monitoring in site investigations
  • Hydrometric monitoring services at mine and other sites, with spot flow gauging and water quality sampling
  • Weirs and flumes for flow measurement
  • Flow meter verification and calibration
  • Event duration and flow monitors at storm overflows and treatment works

What is not included

  • Laboratory analysis of water samples (see Environmental laboratory analysis)
  • Private water supply sampling (see Private water supply sampling and risk assessment)
  • Drinking water radioactivity (see Environmental radioactivity monitoring and radiological analysis)
  • Freshwater ecology surveys (see Freshwater ecology and fish surveys)
  • Marine ecology surveys (see Marine and coastal ecology surveys)
  • SCADA and telemetry platforms (see SCADA systems)
  • Flood risk modelling (see Flood risk assessment)
  • Hydrographic and bathymetric surveys (see Hydrographic and bathymetric surveys)
  • Legionella and building water hygiene (see Legionella risk assessment)

Often bought by the same buyers