This is a question that was raised by someone using the lake. Here is our reply.
We have taken samples from various locations along the North Somerset coastline and had them independently tested for various radioactive isotopes. Bristol Channel sediment analyses 2021 TDJ (stophinkley.org)
Also see our accompanying press release
We are currently waiting for analysis and conclusions from the latest testing. The testing is very expensive so we are limited to the number of times we can sample the coastline and send them away for analysis. The Environment Agency releases data from their analysis in a report called RIFE. You can search this as it is available to the public. https://www.gov.uk/government/publications/radioactivity-in-food-and-the-environment-rife-reports/rife-27-summary-radioactivity-in-food-and-the-environment-2021
We put pressure on the Environment Agency to take an extra sample on the river Parrett in the centre of Bridgwater and now that is listed as part of their twice-yearly tests.
When we have previously taken samples ourselves and had them analysed. A range of isotopes were detected that show there are radioactive particles derived from manmade nuclear processes from Uranium.
The Office of Nuclear Regulation, EDF and Environment Agency say the levels are within a safe level forming the background of low-level radiation that we are all exposed to. We question what is a safe level?! We know from marine radiation expert Tim Deere-Jones that there is no safe level of radiation, as only one particle, if it lands in the wrong place, can become a serious health issue. Tim’s work is worth a study.
Tim did a presentation for us in Taunton on marine radioactivity. Well worth a look/listen as he explains why he disagrees with the government viewpoint on safe levels. https://www.youtube.com/watch?v=3u_VDEK4q08
Do please ask your council, EDF and your MP for reassurance. And ask if the swimming locations are tested. In theory the concentrations could build up in the silts from how we understand silts are contaminated, but we don’t have any data to show this. Because the Estuary is a relatively closed system there is a potential for radioactivity to build up along the coastlines. Do let us know what replies you get from the ‘official’ places. We would be interested as we are regularly raising the issue with Government agencies and NGOs.