Schedule 3, Part 3, paragraph 7(5)

In sub-paragraph (3)— “groundwater flooding” means flooding where the water table beneath the ground rises and causes water to seep out at ground level; “groundwater Source Protection Zone 2” means a zone— within— 250m of a point at which water is abstracted for domestic or food production purposes from underground strata where the maximum allowable annual volume as authorised by a licence under section 24 of the Water Resources Act 1991 or allowed by virtue of section 27 of that Act (as the case may be) divided by 365 is less than 2,000 m3 per day, or 500m of a point at which water is abstracted for domestic or food production purposes from underground strata where the maximum allowable annual volume as authorised by a licence under section 24 of the Water Resources Act 1991 divided by 365 is equal to or greater than 2,000 m3 per day, or defined by a 400-day travel time for groundwater to reach a groundwater abstraction point that is used to supply water for domestic or food production purposes, whichever is larger; “principal aquifer” means geological strata which— exhibit a high intergranular or fracture permeability, and provide a high level of water storage and support water supply or base flow to rivers, lakes and wetlands on a strategic scale; “secondary A aquifer” means permeable strata capable of supporting water supplies at a local rather than strategic scale; “secondary B aquifer” means predominantly lower permeability strata including where they have, in part, the ability to store and yield limited amounts of groundwater by virtue of localised features such as fissures, thin permeable horizons or weathering; “secondary undifferentiated rocks” means rock deposits or strata with variable permeability and storage properties which are not consistently a secondary A aquifer or secondary B aquifer; “unproductive strata” means geological strata which— have a low permeability that has negligible significance for water supply or river base flow, and consist of deposits that naturally offer protection to any aquifers that may be present beneath.

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