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Projects

Whitehead & Associates are leaders in the field of onsite and decentralised wastewater assessment and design.

We have prepared guidelines for onsite wastewater assessment, design and management for a number of state and local government agencies in Australia and the Pacific, have undertaken numerous onsite domestic and commercial wastewater assessments and designs and have developed a quantitative risk assessment model for catchment wide analysis of onsite wastewater disposal.

On-Site Servicing Study, Coongulla-Glenmaggie, Victoria

This study involved a review of existing on-site disposal systems including site audits, assessing minimum on-site land area requirements based

Development of a policy document, technical guidelines, a biogeophysical GIS site suitability model for decentralised wastewater solutions and concept designs for two Priority Sewage Program villages for Sydney Water

This project initiated development of the Decentralised Sewage Model (DSM) which we have subsequently used to evaluate the site opportunities

Development of the trial Hawkesbury Lower Nepean On-site Sewage Risk Assessment System (OSRAS)

This involved the development of the second stage of the GIS based OSRAS model and its application to eighteen Local

Development of a Wastewater Management Strategy for Sorell Council

This study involved the development of a wastewater management strategy for a rapidly expanding population in Tasmania. The population was

Revision of Technical Installation Guidelines for on-site sewage management systems for Port Macquarie – Hastings Council

This project involved the development of a set of ‘standard drawings’ for on-site wastewater management system components such as sand

Coomba Park catchment improvement project

This project assessed the nature and extent of impact of on-site systems on surface water and groundwater and investigated the

Cumulative impact assessment for on-site wastewater project

Assessment for a 50-lot subdivision to assess the potential for export of nutrients to oyster leases in an environmentally sensitive

North Arm Cove and Pindimar Catchment Management Project

This project involved the mapping of some 300 on-site systems in three villages on the northern shores of Port Stephens

On-site wastewater management system investigation – Farley NSW

An assessment of on-site wastewater management system efficiency for the village of Farley NSW for Maitland City Council.