Water & effluent sewage treatment • Water pollution • Contamination of water, toxicity • Fishkills • Fisheries assessment • Effluents • Microbiology • Odour abatement • Private water supplies • Septic tanks • Cesspits • Pathogens & bacteria • Water-related issues of public health • Drainage design • Flood damage • Legionnaire's disease • Leptospirosis • Cryptosporidium • Stormwater modelling • Aquaculture engineering • Water & angling amenities • Groundwater hydrology • Plumbing systems • Package treatment plants • Moulds & fungi