Defra - Department for Environment, Food and Rural Affairs.

Science Search

Science and Research Projects

Return to Science Search homepage   Return to Project List

Determine factors which influence infiltration and treatment within soil of dilute farm effluent - WA0210

Approximately 9,000 dairy farms in England and Wales dispose of the dirty water (effluent for dairies and parlours) by low rate irrigation systems; these receive grant aid. It has become apparent that artificially under-drained soils give rise to the rapid discharge of irrigated effluents which are highly polluting. The Water Act 1989 removes the farmer`s immunity to prosecution in that good agricultural practice is not a defence. The pollution caused by these systems is severe in areas of intensive dairy farming and cumulatively cause great harm to river systems and water potability.

The factors which affect the infiltration rate and degree of water pollutant removed from dilute farm effluents, when applied to grassland growing on four soil types will be determined. The information will be correlated to soil types and used with the soils data base for England and Wales to develop improved site selection.

Objective: To determine factors which influence infiltration and treatment of dilute farm effluents, including site selection.
Time-Scale and Cost
From: 1991

To: 1993

Cost: £116,000
Contractor / Funded Organisations
Fields of Study
Environmental Protection - Agriculture