Do not use sewage sludge that has not been properly sampled and analysed on arable soils
Concentrations of potentially toxic elements (PTEs) are kept below maximum permissible limits on arable soils
Maintain/improve chemical soil status
Reduce concentrations of toxic elements within crops
Food safety - toxic elements
Reduce crop damage from phytotoxic elements
Maintain / improve crop yields
Increase farm income
Economic viability
Efficient use of resources - energy
Ensure food is available to meet consumer demand