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Organic manures or compost can help to improve soil fertility by increasing organic matter content, improving nutrient and water retention, and reducing erosion.

Organic manures must contain only the lowest possible load of heavy metals and other toxicants and meet the legal regulations.

Any use of treated human sewage sludge on land destined for agricultural use must be in accordance with updated versions and internationally applied “Codes of Practice for the agricultural use of Sewage Sludge”. Existing “Codes of Practice for the Control of Microbial Hazards” give further guidance. Untreated human sewage sludge must not be applied to farmland.

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