image credit

Chartered Institution of Water and
Environmental Management (CIWEM)

106-109 Saffron Hill, London, EC1N 8QS  
Tel: 020 7831 3110   Fax: 020 7405 4967


  • Committee Members

    • Dr Ioannis Alexiou - Chairman

      Dr Ioannis E. Alexiou is a Senior Consultant of the consultancy network of Scientists International operating as a freelance consultant with partners around the world, with 20 years experience in Civil Environmental Engineering and Management. Over this period he has been working mainly in UK, South Korea, Saudi Arabia, Greece and Russia, but also other countries in Europe, the Far East, and Africa. He has a PhD from Newcastle University on anaerobic digestion (AD) of agro-industrial wastes and he has both research and commercial work experience in the field of treatment and management for industrial and domestic wastes, sludges and wastewaters. He has primarily worked in industrial and business environmental development projects with groups and associates in UK, Europe, East Asia, Africa, the Middle East and USA. Also he is the Chairman of the IWA Specialist Group on Pretreatment of Industrial Wastewater since 2010.

      Tel: 020 88510901

    • William Richardson - Immediate Past Chairman

      William Richardson has worked for Green Element for 5 years now, helping the environmental awareness of their clients.



      Tel: 020 7096 0054

    • Kelvin Reay - Vice-Chairman

      A Chartered Water and Environmental Manager with seven years' postgraduate experience in the management and technical delivery of coastal and offshore assets, responsible for undertaking a range of consultancy-based work from early stage strategic advice and project appraisal through to detailed design and construction supervision. Has delivered the detailed design of coastal and flood protection schemes, coastal erosion monitoring studies, flood modelling studies, geomorphological investigations, coastal defence asset inspections and subsea cable and pipeline routing and landfall design studies. Has extensive experience of working in multi-disciplinary teams for a wide variety of clients both in the UK and internationally, including: Ireland, Romania, Qatar, UAE, India and South and West Africa.

    • Dr Tim Evans - Committee Member

      Tim Evans Environment

      Fax: 01372 272172

      Tel: 01372 272172

    • Claire Barnes - Committee Member

      Claire is a Process Engineer, currently working with MWH. She has over 18 years' experience focused on the process design and commissioning of wastewater treatment and sludge handling systems.

    • Kayan Cheng - Committee Member

      Kayan became a member of CIWEM in 2012. She has over six years of experience in the Environmental and Engineering Consultancy with experience focussed on flood risk assessment, drainage design, modelling and assessment for residential, commercial and industrial projects.

    • Astrid Tishler - Committee Member

      Astrid is an environmental a consultant at Ramboll and works mainly on environmental impact assessments, due diligence studies and environmental coordination for detailed design. Astrid has experience in working with developers, architects, design engineers, planners and contractors to deliver good environmental practice and sustainability throughout the life of development projects and strategies.





Chartered Institution of Water and
Environmental Management (CIWEM)

106-109 Saffron Hill, London, EC1N 8QS  
Tel: 020 7831 3110   Fax: 020 7405 4967