Produced from the treatment of potable water, water treatment sludges are either cakes or liquids sourced directly from water utility treatment works and are routinely applied to local agricultural soils.
These materials provide an excellent source of soil organic matter and the added presence of organic acids aids nutrient solubility and uptake, as well as enhancing microbial activity for enhanced nutrient cycling in soils. Water treatment sludges are also often a good source of sulphur which helps improve development and growth of crops.