# The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021, Paragraph 6

Extent: E+W

In the case of a slurry storage tanks with walls made of earth, the tank must have at least 750 mm of freeboard and 300 mm of freeboard in all other cases.

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Source: https://www.legislation.gov.uk/wsi/2021/77/schedule/6/paragraph/6 (the official version)
Page: https://openlegislation.uk/water-resources-control-of-agricultural-pollution-wales-regulations-2021/schedule-6/paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.