Thames River Watch: citizen science in action


The river Thames is a fantastic resource to be celebrated and enjoyed. But it needs our protection.

It faces sewage pollution, oils and heavy metals from roads, the growing problem of plastic litter, invasive plants and the impact of drought and flooding.

These dangers don’t just impact the Thames and its wildlife. They threaten us too; our quality of life and our city’s prosperity.

Thames River Watch gives us a way to come together as Londoners and communities to protect and monitor the health of the river Thames. It does this by training Londoners to capture vital information on Thames water quality and the types of litter that is collecting on the foreshore.

Together we are creating a far larger data set than would be possible otherwise and are contributing vital data to the existing understanding of the Thames’ health.

This data is enabling us, alongside others, to campaign for its better protection. Our latest reports have helped to raise awareness about the issue of plastic packaging in the river and build the case for action.

Become a citizen scientist with us

 You do not need any prior knowledge as our free one day training course covers everything you need to know. All we ask is for you to commit to monitor the River Thames at least six times in the year after your training.

 We are launching community hubs in Hammersmith, Battersea, the City of London and Greenwich/Isle of Dogs to act as focal points of activity for Thames research.

Upcoming training dates are below. To join a training session, please register with Thames21. If you have already registered, simply fill in the training booking form.

Water quality training (for starters): all 10am to 3pm

  • Wednesday 3 May 2017: Tideway offices, Battersea
  • Saturday 20 May 2017: Dorset Wharf, Fulham
  • Please note: training on the 22nd April has had to be cancelled. A new date will be added soon.

Water quality update (for those who have already trained): 6.30 to 8pm

  • Wednesday 26 April 2017: Thames21 offices, City of London
  • Thursday 4 May 2017: Thames21 offices, City of London
  • Monday 8 May 2017: Thames21 offices, City of London
  • Thursday 18 May 2017: Thames21 offices, City of London

Litter monitoring training: all 10am to 4pm.


  • Saturday 21 May 2017: Dorset Wharf, Hammersmith
  • Saturday 3 June 2017: National Maritime Museum, Greenwich


Thames River Watch empowers:

  • Individuals through water quality and litter monitoring trainings;
  • Community groupsrecreational groups and youth organisations with bespoke trainings;
  • Primary and secondary schools in close proximity to the Thames with an outdoor learning experience;
  • Businesses who wish to lead their own waterway clean ups.

If you have any questions please contact:

  • AJ. McConville on 07585 302624
  • Nick Beevers on 07554 402772

Or email:



Thames River Watch is generously funded by Tideway.



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