Dr Ross Mars

Dr Ross Mars has had a long involvement with wastewater treatment and reuse, and he has presented papers at a number of national and international conferences, both in Australia and overseas, and has had several papers published in scientific journals. Ross has developed a number of greywater reuse strategies and technologies, and a range of approved products, and has installed these in homes and commercial premises throughout Western Australia. He also manufactures and supplies rainwater tank systems, and installs waterwise gardens, aerobic treatment units for whole-house wastewater recycling and water-sensible irrigation systems. Besides his work in greywater and rainwater tank installations, Ross is one of the most authoritative permaculture teachers, designers and consultants in Australia, and author of four books on the subject and two DVD’s on energy efficient housing design and renewable energy systems for power generation. He has developed accredited permaculture training courses from CI right through to Diploma, and has introduced CI and CII Permaculture as VET programs in high schools.

Gareth Almond

Gareth Almond has designed and installed water-saving systems in the Perth area for over 10 years. His business specialises in meticulous installations of all sizes of rainwater tank from the very small on a patio up to very large for rural properties. He particularly enjoys the more challenging work. Gareth also installs and services the AWWS range of greywater systems across the metro area for garden irrigation using household wastewater. He has developed his own suite of modelling software to help determine the most efficient water saving options and designs systems to maximise cost-benefit, which would typically include the pumped supply of rainwater back into the home. Gareth has an Honours degree in Surveying Science and spent the first part of his career doing fieldwork around the world and then as a researcher and technical manager before returning to site work in the water recycling business. He is also heavily involved in volunteer work for various organisations.


Greywater & Wastewater Industry Group. We are a group of water industry professionals who are active in the design, research, manufacture, installation and servicing of greywater and wastewater treatment systems. GWIG is a non-profit organisation which was formed in late 2010 in order to provide a united voice for a WA industry that is largely unsupported and under-acknowledged for the important work that it does.

Ken Higgins

Ken is a director of Complete Enviro Solutions (CES), a Western Australian owned family business founded in 2008 that provides a unique “one-stop shop” of consulting, sales and installation in the sectors of energy and water saving initiatives. We believe there needs to be a balance between these, which can be achieved through skilful and careful planning. Our mission is to provide sustainable products and services in an efficient and cost-effective manner to reduce the amount of energy and water consumed in residential homes and businesses. CES has supplied and installed all the rainwater systems in Landcorp’s White Gum Valley Project and consulted on the supply and installation of the greywater system installed at Bethanie’s Aged Care facility in Gwelup. CES has installed numerous other rainwater and greywater systems to individual homes as well as solar power systems including commercial applications. CES was responsible for the supply and installation of solar hot water systems to the City of Vincent.

Mark Harland

Mark has owned and operated ‘Water Capture’ since 2005. With a background in Agricultural Business, a farm upbringing near Esperance, and a keen awareness of the environment, Mark started ‘Water Capture’ with the aim of helping people reduce their dependency on Mains water. Now based in Fremantle their focus is on Greywater systems and Rainwater Tanks. Installations to old homes, new homes, schools, public buildings and mine sites have provided many challenges and a lot of satisfaction over the years. With a wealth of knowledge and experience and a strong connection to their suppliers and manufacturers Water Capture can provide solutions to help you with your water savings.

Martin Anda

Martin Anda is an environmental engineer with over 30 years experience in the energy, water, waste and construction sectors since completing a Bachelor of Engineering (Mechanical) degree. After working with consulting engineering firms on large industrial energy projects, he spent 15 years working with remote indigenous communities across Australia and developing countries and completed a PhD during this time. He joined Murdoch University and became Research Manager then Director of the UNEP Environmental Technology Centre, later chairing the Environmental Engineering undergraduate program. Today he manages postgraduate researchers in a group called Environmental Engineering & Living Systems (EELS) on industry focused research projects. He conducts a range of renewable energy, water and waste related projects and teaching across Indonesia, India and Australia. Martin is an avid grey water recycler into irrigation of his home garden.

Stewart Dallas

Stewart is a founding member and Chair of GWIG since its inception. He is a qualified civil engineer and has a PhD in the field of Ecological Engineering. He has worked for many years as both a consultant and research fellow at Murdoch University focussing on water and wastewater related projects. He has experience both nationally and internationally in the design and application of appropriate environmental technologies with a focus on constructed wetlands for wastewater treatment. Recent projects in Perth have focussed on designing fit-for-purpose water supply schemes such as greywater, rainwater and third pipe schemes to service the non-drinking water requirements for developments across a range of scales. Stewart is keen to see WA adopt more sustainable and innovative approaches to the way it uses water and wastewater.