# The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021, Paragraph 3

Extent: E+W

The capacity of the effluent tank must not be less than—
(a) in the case of a silo with a capacity of less than 1,500 cubic metres, 20 litres for each cubic metre of silo capacity, and
(b) in the case of a silo with a capacity of 1,500 cubic metres or more, 30 cubic metres plus 6.7 litres for each cubic metre of silo capacity in excess of 1,500 cubic metres.

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Source: https://www.legislation.gov.uk/wsi/2021/77/schedule/5/paragraph/3 (the official version)
Page: https://openlegislation.uk/water-resources-control-of-agricultural-pollution-wales-regulations-2021/schedule-5/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.