Biosolids are a by-product of wastewater treatment. They contain useful amounts of organic matter and nutrients. When applied to farmland, they can help reduce fertiliser costs and improve structure and fertility of soils.
Biosolids Reuse Guidelines 1999 provide information on how to classify and manage biosolids in order to use them safely.
Biosolids Reuse Guidelines August 1999 (485Kb)
The Approved Management Method for Biosolids Reuse - June 2006 provides the minimum legal requirements for classification and reuse of biosolids in Tasmania.
Note that local governments may require a development application for some biosolids reuse activities, and may impose conditions on them.
Managing contaminated biosolids
Information Bulletin 105 Classification of Contaminated Soils (IB105) may apply to the management of soil-like (non-liquid) biosolids when they contain elevated levels of contaminants. For instance, IB105 may provide guidance in determining how biosolids should be managed if the Guidelines classify the biosolid as Grade C for contaminant grade, or
if a contaminant not listed in the Guidelines is likely to be present at elevated levels in the biosolid.
Information Bulletin 105 - Classification of Contaminated Soils (IB105) (309Kb)
Sewage Sludge Management Plans
Some Permits and Environment Protection Notices contain conditions that require wastewater managers to submit a Sewage Sludge Management Plan. The Sewage Sludge Management Plan Guidelines, September 2014 outline the information that must be provided to EPA
Tasmania to satisfy these conditions.
Sewage Sludge Management Plan Guidelines, September 2014 (128Kb)
Tasmania is a member of the Australian New Zealand Biosolids Partnership (ANZBP), whose role is to support the sustainable management of biosolids in Australia and New Zealand. This group is managed by the Australian Water Association and includes biosolids producers, processors, transporters, users, regulators and research institutions. The public area of the
ANZBP website has more information on biosolids.