Research and analysis

Reservoir safety biennial report: 2011 to 2013

This report sets out actions the Environment Agency has taken in its role as the reservoir regulator. The report covers the period from 1 April 2011 to 31 March 2013.


Biennial report on reservoir safety: 1 April 2011 to 31 March 2013

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Owners and operators of reservoirs must follow the requirements of the Reservoirs Act 1975. The Environment Agency may take enforcement action if they are not met.

The Environment Agency issued 58 enforcement notices at 17 reservoirs in England and Wales between 1 April 2011 and 31 March 2013.

In most cases, this was enough to resolve the issue. But, in two cases it was necessary to take further action. One owner received a formal caution and another received a formal warning.

This is the last biennial report the Environment Agency will produce for England and Wales. On 1 April 2013, Natural Resources Wales became the regulator for the Reservoirs Act 1975 in Wales. The Environment Agency and Natural Resources Wales will produce separate reports in future. But they will continue to work together to regulate reservoirs.

Contact the Reservoir Safety Team for more information on telephone number 01392 442001 or email:

Published 4 September 2014