Schedule 21, paragraph 3(1)

A “water discharge activity” means any of the following— the discharge or entry to inland freshwaters, coastal waters or relevant territorial waters of any— poisonous, noxious or polluting matter, waste matter, or trade effluent or sewage effluent; the discharge from land through a pipe into the sea outside the seaward limits of relevant territorial waters of any trade effluent or sewage effluent; the removal from any part of the bottom, channel or bed of any inland freshwaters of a deposit accumulated by reason of any dam, weir or sluice holding back the waters, by causing it to be carried away in suspension in the waters, unless the activity is carried on in the exercise of a power conferred by or under any enactment relating to land drainage, flood prevention or navigation; the cutting or uprooting of a substantial amount of vegetation in any inland freshwaters or so near to any such waters that it falls into them, where it is not reasonable to take steps to remove the vegetation from these waters; an activity in respect of which a notice under paragraph 4 or 5 has been served and has taken effect.

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Source: legislation.gov.uk · retrieved 2026-07-30