The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021

2.  The base of the slurry storage tank, the base and walls of any effluent tank, channels and reception pit, and the walls of any pipes, must be impermeable.E+W

Commencement Information

I1Sch. 6 para. 2 in force at 1.4.2021, see reg. 1(3)