The volunteers that form the comittee of Stormwater SA for 2020/21 are:

Andrew King - Head Shot

Andrew King


Andrew has been on the committee of Stormwater South Australia for numerous years and has held the position of South Australian Chair for the last few years.

Through a combination of his involvement and passion in advancing best practice stormwater management, experience in design and implementation, and representation of local government and Stormwater South Australia, Andrew has been invited to be part of numerous steering and reference groups for stormwater related projects and investigations for various stakeholders. He has also presented on stormwater matter in several varying sectors of the water and related industries, again for various stakeholders.



Sarah Murphy

Sarah graduated with a Bachelor of Civil and Environmental Engineering from the University of Adelaide in 1996 before completing a Masters Degree researching the effectiveness of the Barker Inlet wetlands in improving urban water quality. Throughout her career she has worked on projects in most mainland states of Australia and spent time working overseas on flood disaster management and aid projects in Central Vietnam and North-Eastern India. Since joining Tonkin in 2015, Sarah has been working across stormwater projects and flood studies in Metro and Regional SA and environmental works and measures projects in the Riverland and South East regions. She also holds a number of internal roles across the business in the development and waste management space.

Sarah has been on the Stormwater SA committee in 2017 but is new to the role of Secretary in 2020.

Mark Page2

Mark Page



Mark graduated with a Bachelor of Civil Engineering from the University of Adelaide in 2004 and has since worked at Kellogg Brown and Root as a civil engineer. Throughout Mark’s career he has worked on a wide range of projects including local and state government infrastructure often with a particular focus on the stormwater and WSUD elements of these projects. Mark has also worked as lead civil engineer, design manager and project manager for detailed design, documentation and construction administration for and a large number of urban development projects, and has particular focus, experience and interest regarding urban renewal developments. Mark has been Treasurer for the Stormwater Industry Association of SA since the beginning of 2006.

Dennis Gonzalez Photo

Dennis Gonzalez


Dennis joined the Stormwater SA committee in 2015 and holds a research position with CSIRO Land and Water primarily working on water resource management and water recycling projects. He has a background in environmental science and spatial analysis and previously held applied science positions within the South Australian Government. His research interests include stormwater quality and management, and managed aquifer recharge.

 Sam Kowald Photo

Sam Kowald


Sam has completed a Bachelor Degree in Marine Science and has a personal interest in the effects stormwater can have on the marine environment. He is currently working for Urban Asset Solutions a stormwater solutions company specialising in filtration device manufacturing, designing custom solutions and maintaining stormwater assets, his role focuses on custom project solutions and product testing and compliance.


Jude Nirmalaraja

Jude Nirmalaraja is a Stormwater Engineer in the City Services of City of Onkaparinga. He has more than ten years of experience in Local Government. He worked in Broken Hill City Council and City of Marion before he joined City of Onkaparinga. He is a member of Institution of Engineers, Australia, since 1995. He has completed a Post Graduate Diploma in Local Government Engineering at University of Technology, Sydney and currently is doing Masters in Urban and Regional planning at the University of South Australia. During the last ten years, Jude has carried out various infrastructure designs and worked on many development projects from investigation, design and documentation through to construction.

Jude has applied the Water Sensitive Urban Design (WSUD) approach for many projects. In particular, he has done designs on water quality modelling of bio-retention swales and rain garden for Aldinga Beach redevelopment project.


Kate Vugts

Kate is a Civil Engineer working for Wallbridge Gilbert Aztec. She graduated from the University of Adelaide with a Bachelor of Civil Engineering, and has since worked as a design engineer on various water management, WSUD, and civil infrastructure projects.

Michael Di Matteo

Michael Di Matteo

Michael is an Environmental Engineer with Water Technology experienced in the stormwater management field including stormwater management planning, water quality assessment, stormwater quality improvement system modelling, stormwater harvesting, and multiple criteria trade-off analysis and decision support. Michael received a PhD in artificial intelligence applications for integrated urban water management from the University of Adelaide and is actively involved in research and promoting urban environment Smart Cities initiatives.

Todd Rundle

Todd Rundle


Todd graduated with a Bachelor of Engineering (Civil and Water) from the University of South Australia in 2007 and has 12 years’ professional experience in the stormwater consulting industry.  Todd works at Southfront where he is the Stormwater Modelling Lead, specialising in urban and rural surface water modelling, drainage design and water sensitive urban design.  Todd has experience in developing numerous stormwater management plans across metropolitan and regional areas and has worked on various major road and rail infrastructure projects.


Ben Lewis


Ben completed a Bachelor of Civil and Structural Engineering at the University of Adelaide in 2010 and then started his career as a Geotechnical Engineer for FMG in their Adelaide office. During this period he worked on a wide range of site investigations for various developments around Adelaide and coupled this with some geotechnical design and analysis of slopes, walls along with some pile design. In 2016 he shifted to a Sales Engineering role with Geofabrics in their Adelaide Branch which focussed in design and supply of geosynthetics into various civil, coastal, mining and water related applications. For the past 2 years he has had a national role and been focussed predominantly within the water sector with an objective of building awareness for using geosynthetics in the water containment and stormwater management space. He has an innovative mind set and is always keen to better understand how systems or designs can be improved and costs of construction or maintenance minimised.



Harsha Sapdhare




Harsha is a water and environmental engineer experienced in field monitoring, hydraulic modelling, water quality and environmental impact assessment. She is working as a Research and Development Manager at Space Down Under. Harsha obtained her PhD in economic and environmental impact assessment of kerb side infiltration systems from the University of South Australia. Harsha’s research interest is in the investigation of cost-effectiveness and environmental impacts of infiltration systems and other green infrastructure or WSUD tools.



Russell King


Russell King has a bachelor of civil engineering from Adelaide University in 2002, and in 2008 completed his masters in engineering at Monash with a focus on urban stormwater management.

He has a passion for smart water design ‘WSUD’ and returning our natural environment and waterways back to what they once were in the hopes he can one day take his children to find frogs and yabbies in the local creek like he did.

When he’s not ‘engineering’ Russell has a passion for travelling with his family, looking after his bee hives, and stopping pucks as an ice hockey goalie.