OUR PEOPLEWe are a family-like business and everyone is key in our organisation

Roger founded Rockwater in 1974 following experience as a hydrogeologist in the Geological Survey of Western Australia and mining companies.  He has an extensive knowledge of the hydrogeology of WA, and has worked on water supply, mine dewatering, and numerous other projects throughout Australia and abroad.  Roger is semi-retired and with his yacht, Aquila, enjoys competing in blue-water ocean races when the breeze is up.

Dr Roger Passmore


Grant joined Rockwater, as our second employee, back in 1980.  He is widely experienced in applied hydrogeology and geophysics, specialising in deep sedimentary aquifer investigations.  Grant instigated Rockwater’s geothermal investigations in 1996 and currently leads our team of geothermal hydrogeologists.  He has recently installed a shallow geothermal system for heating and cooling of his new house, which he hopes will be used as a model for others to follow.

Grant Bolton


Peter completed a doctoral study of the Tertiary palaeovalleys and their fills (‘palaeochannels’) in the Kalgoorlie area while at the Australian National University.  Since joining Rockwater in 2005, he has continued to specialise in palaeovalley aquifers, and in sedimentary aquifers along the south coast of WA.  He also specialises in the dewatering of banded iron-formation aquifers on the Yilgarn Craton.  For his sins, Peter is the main author of this website.

Dr Peter de Broekert


Nick founded and leads our team of environmental scientists. He has environmental and management qualifications and 20 years’ experience as an environmental practitioner. Nick joined Rockwater in 2004 and provides strategic environmental advice and project environmental management to clients for a range of projects, mainly environmental impact assessments (EIA), baseline biological surveys (flora/vegetation, stygofauna and troglofauna), assessments of groundwater-dependent ecosystems, and groundwater monitoring and reporting.

Nick Evelegh

Principal Environmental Scientist

Phil joined Rockwater, as our third employee, way back in 1982.  Since then he has conducted innumerable investigations in mine dewatering, water supply, and groundwater flow and solute transport modeling, mainly at waste-water treatment plants.  Known for his short reports, he gets things done quickly.

Phil Wharton


Martin specialises in geothermics, the engineering of deep sedimentary bores, and the modelling of groundwater flow, solute and heat.  He is a current director of the Australian Geothermal Association and while not working, enjoys rock climbing and other outdoor adventures.

Martin Pujol

Principal Geothermal Hydrogeologist

John joined Rockwater in 2003 and performs projects with a focus on groundwater supply, assessment of environmental impacts on groundwater and surface water, groundwater monitoring, groundwater contamination and mine dewatering.

John Moncrieff

Principal Hydrogeologist

Adam joined Rockwater in 2008.  He is a very competent project manager, and is heavily involved in the design and supervision of our larger drilling and test-pumping programmes.  Adam is a dedicated supporter of the Eagles AFL team and all too regularly wins our tipping competition.

Adam Mahon

Senior Hydrogeologist

Miranda specialises in water supply and geothermal projects.  She leads our team in Managed Aquifer Recharge and is one of our most skilled groundwater modellers.  Miranda loves the beach and is an enthusiastic surfer.

Miranda Taylor

Senior Hydrogeologist

Steve joined Rockwater in 2011 after a brief career as an iron-ore mine geologist.  He has a Masters degree in Hydrogeology and manages many of our large drilling projects for water supply and mine dewatering.  While not in the field, he enjoys running lots of kilometers.

Steve Bolton

Senior Hydrogeologist

Since joining Rockwater in 2007, Daisy has also become an expert in GIS, groundwater sampling and analysis, and the supervision of pumping tests and bore re-development.  While not a work, she likes to spend time with her horses.

Daisy Scott

Supervising Environmental Scientist

Danae joined Rockwater in 2003.  She specialises in municipal water-supply projects, and is heavily involved in tailings and water storage facility investigations.  Danae also prepares our largest monitoring reports and is our go-to person for computer problems.

Danae Roney

Supervising Environmental Hydrogeologist

Stephen recently joined Rockwater to advance his career as a hydrogeologist.  He has a strong background in geophysics and seismic stratigraphy, which will become increasingly important for exploring groundwater in our deep sedimentary basins.

Stephen Johnston

Project Hydrogeologist

Matt joined Rockwater in 2018 and has a keen interest in aquifer assessments, mine dewatering, hydrochemical and isotope studies, and bore construction and development.  He is also our very capable and enthusiastic HSSE officer.

Matthew Vear

Project Hydrogeologist

Stacey is an Environmental Engineer and mainly conducts surface-water studies for mining projects.  She also leads our use of FloPy - a Python package for developing, running and post-processing MODFLOW groundwater models.  Stacey loves travelling, and despite her diminutive size, is a fearless hockey player.

Stacey Underwood


David Murrie

Graduate Hydrogeologist

Nathalie Yates

Cathy Reidy

Michelle Prentice

Want to know more?