Artesia was established in 2008 and is led by Dene Marshallsay, Simon Gordon-Walker and Rob Lawson, each of whom have over 25 years’ experience in the water sector. Dene, Rob and Simon work with an excellent team of water resource planners, leakage specialists, statisticians and data analysts to identify innovative solutions for today’s water management challenges.
Artesia works in the UK and internationally. We provide bespoke policy advice through to implementable solutions which take account of the environmental, economic, social and technological challenges faced by today’s and tomorrow’s water industry in resource and demand management.
Whether it is how to conserve water, support required in water resource planning, advice on managing water loss, or quantifying water use, contact us by clicking here, or phone us, to see how we can help.
Dene Marshallsay

Dene Marshallsay

Dene is a leading UK water sector expert specialising in supply/demand management, leakage and water loss management, domestic and revenue metering. He also has experience of supply demand planning, policy development and regulation. Dene has over 25 years’ experience and has provided expertise in a wide variety of projects including research in water demand planning & forecasting, water efficiency, water conservation, demand management options, leakage management, flow-metering, the cost effectiveness of different demand management options.
Simon Gordon-Walker

Simon Gordon-Walker

Simon has 26 years’ experience in the water sector primarily as an international consultant specialising in many aspects of water and sanitation sector capacity strengthening, business planning, institutional reform and comparative performance and regulation; in Ethiopia, Egypt, Brazil, India, Kyrgyz Republic, Yemen, Bangladesh and others in South and Central Asia, and South America. Simon also has a number of years’ experience of working with WWF in support of its UK based water stewardship and river management improvement initiatives.
Rob Lawson

Rob Lawson

Rob has over 24 years’ experience in the technical delivery, management and direction of water resource planning and management, water efficiency and hydrology projects. Rob has provided extensive support to water companies in the delivery of water resource management plans as part of the last four periodic reviews, and as a result has an in-depth technical knowledge of all aspects of the supply demand balance including deployable output estimation, headroom and outage, micro-component demand forecasting, climate change analysis and scheme option identification and appraisal.
Dennis Grimshaw

Dennis Grimshaw

Dennis is a Chartered Civil Engineer and Water Engineer with more than 40 years’ experience in the water industry. He has expertise in option appraisals and costing, leakage economics, investment planning, and network management. Dennis developed industry guidelines for the inclusion of environmental, social and carbon impacts in the calculation of sustainable economic levels of leakage. Dennis has also been involved in planning and project appraisals for trunk supply and distribution schemes, infrastructure planning for urban centres, supply and distribution system modelling, levels of service analyses.
Alan Spey

Alan Spey

Alan is a specialist in network analysis, with 9 years’ experience in the delivery, management and development of infrastructure deterioration and performance modelling, leakage measurement, and pressure management projects. Alan has broad experience in the water industry with hands on knowledge of metering, logging and pressure management equipment which has informed the development of fresh technological applications in network investigations.
Victoria Ashton

Victoria Ashton

Victoria has an MSc in water resources technology and management with expertise in the areas of water resources planning, demand management, metering, water efficiency and conservation. Other areas of experience include; water quality modelling and trending, design and operation of water treatment processes, water resources and water supply in developing countries. Victoria was a water resources planner at the Environment Agency Wales responsible for auditing water company water resources management plans with particular emphasis on the demand management; leadings the EA’s water efficiency strategy for Wales
Daniele Di Fiore

Daniele Di Fiore

Daniele is a graduate Environmental Professional with a background in environmental conservation and management. He has gained experience working in in a variety of roles related to environmental projects developing skills in field research, planning and consultancy, data collection and analysis, geospatial and population analysis, report writing. He has experience with Microsoft Office suite, digital mapping (ArcGIS suite), statistical analysis (Microsoft Excel and recently started training with RStudio), database suite (Microsoft Access), and graphic software (Adobe suite and freeware).
Shana Meeus

Shana Meeus

Shana is a Statistical Analyst and a graduate from Bristol University with a 1st Hons in Mathematics. She works on a range of projects providing data analysis and data processing using methods such as cluster analysis and regression techniques in R. Shana is methodical and meticulous; analytical and able to find solutions to complex water industry problems, whilst communicating results clearly and effectively. Shana has a good working knowledge of programs such as R, Python and Maple, as well as the ability and motivation to adapt these skills to other software packages.
Niall Fealty

Niall Fealty

Niall is a data scientist with an MPhys in theoretical physics and a background in scientific research. Well versed in programming languages-R, Python, C++, Matlab-and with experience of mathematical modelling, statistics, and statistical programming (regression, clustering, neural networks). More broadly Niall also has a background in writing-having published articles on science, politics, music, among other things-as well as teaching and lecturing on undergraduate level physics. Always keen to keep learning.
Sarah Rogerson

Sarah Rogerson

Sarah is a Data Analyst and Statistical Analyst with a BSc in Zoology. Her responsibilities, skills and expertise include; R programming, data insights, analytical and logical thinking, problem solving, statistical programming, data management. Sarah has strong SAS expertise, but also uses R and SQL, with strong Microsoft Office skills.
Joseph Sanders

Joseph Sanders

Joe has over 10 years experience developing strategies around water networks, including leading the successful below ground asset package for a water company at the last price review. He has experience of network failure and consequence modelling and cost benefit optimisation of water network strategies. He also has extensive knowledge of leakage calculation techniques as well as the components required for leakage assessments. He has a PhD in plastic water pipe degradation from Imperial College.

Cristina Munilla

Cristina Munilla

Cristina is a consultant analyst with a BSc in Environmental Biology and an MSc in Statistics. She has experience working in a variety of environmental projects that range from water demand forecasting to climate change projections and marine biodiversity analysis. Her skills include: data collation and analysis, R programming for trend analysis and modelling leakage patterns, as well as the planning and developing of environmental surveys. Cristina also has expertise in optimising R code and has a got a good working knowledge of geographical information systems (QGIS).

Katie Livesley

Katie Livesley

Katie is our office manager. She has around 15 years’ experience in business management in a number of business sectors including sport, construction, banking and accountancy. Katie holds a BSc in Business Studies and an Advanced Diploma in Management Accountancy.