Members of the committee
Current Members of the Committee
Member - Sarah Belton Sarah is Founder of Nutrient Neutral who for the past 3 to 4 years has supported developers, local authorities and landowners in finding solutions to the issue of nutrient neutrality across England and Wales. Sarah joined the committee in 2023.
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Treasurer – ANDY FREEMAN Andy is currently working as a project Scientist for ARM Group Ltd, a company that supplies design construction and maintenance services for constructed wetlands for wastewater treatment. Having developed a passion for the science underpinning wastewater treatment using constructed wetlands, Andy’s specific area of expertise is the monitoring, characterisation and treatment of de-icer contaminated stormwater run-off from airports, which was the topic of his PhD that he successfully defended in 2016. Andy has presented research in the UK and Internationally and published peer reviewed journals within Science of the Total Environment, Environmental Technology and Innovation and Water Science and Technology. Andy joined the CWA committee in 2018 and was elected treasurer in 2019. |
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Member – CAT McILWRAITH Cat is a GIS analyst for the Rivers Trust. The Rivers Trust is the umbrella organisation for 60 local member Trusts. It is the only group of environmental charities in the UK and Ireland dedicated to protecting and improving river environments for the benefit of people and wildlife. Cat served on the committee between 2014-2017 and was re-elected in 2019. |
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Member – MATTHEW SIMPSON Matthew is a Director of 35percent, a consultancy dedicated to all aspects of wetland design and management, and has extensive experience in water, wetland and biodiversity assessment and management. Matthew is responsible for developing, managing and reporting on a range of projects and providing specialist eco-hydrological, wetland restoration, creation and wetland management advice. His PhD focused on developing a practical classification and functional evaluation tool for European wetland ecosystems. Matthew has been on the committee since 2011. |
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Chair – GABRIELA DOTRO Gabriela Dotro is a Senior Research Fellow with Cranfield University and a passionate wetland advocate, Gaby’s main area of expertise is nature-based solutions for wastewater treatment and biogeochemical transformation of phosphorus, iron and nitrate in natural and engineered systems. She is currently working on the development and improvement of nature-based solutions to deliver multiple benefits beyond wastewater treatment. She has recently co-authored an Open Access textbook on Treatment Wetlands, edited and co-authored specific chapters within the upcoming IWA Scientific and Technical Report on Wetland Technology, and is developing a suite of online CPD courses on ecological engineering. Gaby was elected as a member of the CWA Committee in 2012. |
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Member – DAN ROBERTS Dan works as a project manager for the Wildfowl & Wetlands Trust raising the profile of treatment wetlands and the multiple benefits they provide amongst a wide range of stakeholders. Dan joined the committee in 2023. |
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Member – JOHN WILLIAMS John is Professor of Environmental Technology in the School of Civil Engineering and Surveying at the University of Portsmouth. He arrived in Portsmouth in 1988 to undertake a PhD on nitrogen cycling and pathogen removal in field scale Gravel Bed Hydroponic constructed wetlands in the UK and Egypt. He has since worked on a range of constructed wetland projects in the UK and overseas. In recent years his work has focused on pollutant removal in vegetated Sustainable Drainage systems. John is the academic lead for the University's Environmental Technology Field Station based at an operational sewage works which hosts an Innovation Hub for wastewater technologies in collaboration with Southern Water. John was elected to the CWA Committee in 2019. |
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Secretary - LUCY CROCKFORD Lucy is a Senior Lecturer in Soil and Water Management at Harper Adams University with a wide range of research interests ranging across environmental chemistry, physics and engineering. Her primary degree was in Environmental Science at NUI, Galway (2006), with an MSc in Environmental Engineering at Queen's University Belfast (2010), a couple of years after some experience in industry. Her PhD research in Geography at the University of Dublin, Trinity College (2015), determined the application of high temporal resolution data in the management of eutrophic water bodies in agricultural catchments. Lucy's research at Harper Adams University is primarily in the application of organic amendments to soils and the impact on soil structure and water movement dynamics - as well as the resulting water quality. The role of constructed wetlands and more natural methods of water treatment are a developing area at the university. She is also very interested in catchments with high sediment movement and looking to expand her knowledge in this area particularly into Africa and small holding farming. Lucy joined the committee in 2021. |
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Previous members of the Committee
2021-2022
Chairman | GEOFF SWEANEY (Wetland Engineering) |
Treasurer | ANDY FREEMAN (ARM Ltd) |
Secretary | DAVID NAISMITH (Mott Macdonald) |
Member | MATTHEW SIMPSON (WWT Consulting) |
Member | GABY DOTRO (Severn Trent Water, Cranfield University) |
Member | JOHN WILLIAMS (University of Portsmouth) |
Member |
CATHERINE MCILWRAITH (The Rivers Trust) |
Member | LUCY CROCKFORD, Harper Adams University |
2018 - 2020
Chairman | GEOFF SWEANEY (Wetland Engineering) |
Treasurer | ANDY FREEMAN (ARM Ltd) |
Secretary / Administrator |
HELEN NICHOLLS (Global Wetland Technologies) |
Member | MATTHEW SIMPSON (WWT Consulting) |
Member | GABY DOTRO (Severn Trent Water, Cranfield University) |
Member | JOHN WILLIAMS (University of Portsmouth) |
Member |
CATHERINE MCILWRAITH (The Rivers Trust) |
Member | DAVID NAISMITH (Wildfowl and Wetlands Trust) |
Previous members of the Committee
2016-2018
Chairman | GEOFF SWEANEY (Wetland Engineering) |
Treasurer | GEOFF DURNO (Reeds from Seeds) |
Secretary / Administrator |
HELEN NICHOLLS (Global Wetland Technologies) |
Member | MATTHEW SIMPSON (WWT Consulting) |
Member | GABY DOTRO (Severn Trent Water, Cranfield University) |
Member | CLODAGH MURPHY (ARM) |
Member |
STEWART MOIR (Moir Environmental) |
Member | TRISTAN JOSH (Eco~tech Systems |
2014 – 2016
Chairman | GEOFF SWEANEY (CH2M) |
Treasurer | JOHN ROBINTHWAITE (JPR Environmental), GEOFF DURNO (Reeds from Seeds) |
Secretary | CLODAGH MURPHY (ARM Ltd) |
Member | MATTHEW SIMPSON (WWT Consulting) |
Member | GABY DOTRO (Severn Trent Water, Cranfield University) |
Member |
CATHERINE McILWRAITH (WWT) |
Member |
STEWART MOIR (Moir Environmental) |
Administrator | HELEN NICHOLLS (Centre for Alternative Technology) |
2012 – 2014
Chairman | RICK HUDSON (Cresswater Solutions) |
Treasurer | JOHN ROBINTHWAITE (JPR Environmental) |
Secretary | MATTHEW SIMPSON (WWT Consulting) |
Member | CLODAGH MURPHY (ARM Ltd) |
Member | GABY DOTRO (Severn Trent Water) |
Member | NIKKI POPPLESTONE (Land and Water) [2012-2013] |
Member | STEWART MOIR (Moir Environmental) [2013-2014] |
Administrator | CATHERINE McILWRAITH (WWT) |
2010 – 2012
Chairman | RICK HUDSON (Cresswater Solutions) |
Treasurer | GEOFF DURNO (Reeds From Seeds) |
Secretary | SALLY MACKENZIE/MATTHEW SIMPSON (WWT) |
Member | COLIN GITTINGS (Halcrow) |
Member | STUART WIDDOWSON (The Coal Authority) |
Member | WILLIAM McBARNET (NIRBC) |
Member | CLODAGH MURPHY (ARM Ltd) |
Administrator | CAROLINE GRANT (WWT) |
2008 – 2010
Chairman | (2008/9) PAUL COOPER (PFC Consulting) |
(2009/10) RICK HUDSON (Cresswater Solutions) | |
Treasurer | GEOFF DURNO (Reeds From Seeds) |
Secretary | DAVID COOPER (ARM Ltd) |
Member | SALLY MACKENZIE (WWT) |
Member | RICK HUDSON (Cresswater Solutions) |
Member | WILLIAM McBARNET (NIRBC) |
Administrator | CLODAGH MURPHY (ARM Ltd) |
2006 – 2008
Chairman | JOE BIDDLESTONE (Birmingham University) |
Treasurer | DAVID COOPER (ARM Ltd) |
Secretary | PAUL COOPER (PFC Consulting) |
Member | PAUL GRIFFIN (Severn Trent) |
Member | GEOFF DURNO (Reeds From Seeds) |
Administrator | CLODAGH MURPHY (ARM Ltd) |
2004 – 2006
Chairman | JOE BIDDLESTONE (Birmingham University) |
Treasurer | DAVID COOPER (ARM Ltd) |
Secretary | PAUL COOPER (PFC Consulting) |
Member | PAUL GRIFFIN (Severn Trent) |
Administrator | GILL ALEXANDER (ARM Ltd) |
2002 – 2004
Chairman | JOE BIDDLESTONE (Birmingham University) |
Treasurer | DAVID COOPER (ARM Ltd) |
Secretary | PAUL COOPER (PFC Consulting) |
Member | PAUL GRIFFIN (Severn Trent) |
Administrator | GILL ALEXANDER (ARM Ltd) |
2000 – 2002
Chairman | JOE BIDDLESTONE (Birmingham University) |
Treasurer | DAVID COOPER (ARM Ltd) |
Secretary | PAUL COOPER (PFC Consulting) |
Member | PAUL GRIFFIN (Severn Trent) |
Administrator | GILL ALEXANDER (ARM Ltd) |