Microbiology Group


Dr Louise Weaver (ESR)

Louise is the Senior scientist in ESR’s Water, Waste and Social Systems Group. She has been involved on a number of groundwater research projects that support both the Our Land and Water and the New Zealand’s Biological Heritage National Science Challenges. Her groundwater research is focused on identifying how land use, such as farming and waste disposal, affects groundwater quality. Her work frequently assists local councils and communities in developing strategies to reduce or eliminate contaminants in their water systems. 


Rupert Craggs (NIWA)

Rupert is a Principal Scientist and Manager of NIWA's Aquatic Pollution Group based in Hamilton, New Zealand. He has specialized in resource (energy, nutrient and water) recovery from wastewater using natural wastewater treatment systems. His research has involved: evaluation, optimisation, design, engineering and construction of ponds, raceways, filters, and scrubbers for wastewater treatment; optimising natural nutrient removal and disinfection processes; and control of midge nuisance and odour release from conventional wastewater treatment ponds. His energy related research has developed Covered Anaerobic Ponds for enhanced biogas production in simple, cost-effective ponds; and wastewater treatment High Rate Algal Ponds with CO2 addition for production of algal biomass for use as fertiliser, feed, or conversion to biofuel. Rupert currently leads two MSI research programmes on energy recovery and biofuel production using enhanced wastewater treatment ponds.

Phone: 07 859 1807

Rob Davies-Colley (NIWA)

Rob is an environmental scientist specialising in water quality and aspects of stream ecology. He has an MSc in Earth Sciences (Waikato University) and PhD in Environmental Engineering (Water Resources; Oregon State University). His research interests range over general water quality, diffuse pollution from land uses (particularly pastoral agriculture), microbial contaminants and disinfection, optical water quality, natural wastewater treatment, and physical aspects of stream and riparian ecology. Applied/consulting work includes development of water quality guidelines/standards, assessment of wastewater assimilation, and impacts of livestock on streams. Rob is scientific spokesperson for the National Rivers Water Quality Network (NRWQN).

Phone: 07 856 1725