Skip to content
The content on this page has yet to be rewritten for GOV.WALES. It is still correct and up-to-date.

Chemicals and radioactivity

hazard sign

We work on the environmental aspects of chemical nuclear and radioactive matters where exposure may cause harm to the environment and people.


Many chemicals occur naturally. Others are manufactured or released accidentally or as by-products or breakdown products. Exposure to some chemicals may cause harm to the environment and public health.

We work to ensure the environmental safety of industrial chemicals, by-products, pesticides, biocides and veterinary medicines. We work with:

  • the Department for Environment, Food and Rural Affairs (Defra)
  • the other Devolved Administrations
  • local authorities
  • Natural Resources Wales 
  • other regulatory bodies.


We are also responsible for the environmental effects of radioactivity in Wales. We work with:

  • Natural Resources Wales (NRW) - to monitor & control radioactive waste and discharges
  • the Office of Nuclear Regulation (ONR) - to control worker safety on Welsh nuclear sites and research centres, and any direct public exposure from their operations.