PO4 - Improving chemical status and priority substances

Infiltration trenches are defined as shallow excavations filled with rubble or stone. Their function is to facilitate the natural process of infiltration into the surrounding soils from the bottom and sides of the trench, thereby enhancing the soil's inherent capacity for drainage. Ideally, they should receive lateral inflow...

Buffer strips and hedges are natural or semi-natural vegetated features integrated into agricultural and semi-urban landscapes to enhance ecological and hydrological functions.

Buffer strips are areas of natural vegetation cover (grass, bushes or trees) at the margin of fields, arable land, transport infrastructures and water courses. They can feature various combinations of vegetation, from simple grass to mixtures of grass, trees,...

Green cover, cover crops or catch crops refers to crops planted in late summer or autumn, usually on arable land, to protect the soil, which would otherwise lie bare during the winter, against wind and water erosion.  Green cover crops also improve the structure of the soil, diversify the cropping system, and mitigate the loss of soluble nutrients. Green cover crops are good...

Basins are areas for storage of surface runoff that are free from water under dry weather flow conditions.  Basins are bodies of water designed to store surface runoff. They play a critical role in stormwater management by reducing flood risk and improving water quality. The performance of basins is highly site-dependent and often requires upstream source control to function effectively. There are three main types of basins: retention,...