Agricultural run-off, sewage discharge and, more recently, floodwater are all compromising water quality in lakes, rivers, reservoirs and coastal waters. High concentrations of manganese, iron, aluminium and phosphates, which contribute to algal bloom and noxious gases are affecting our aquatic animals and flora. Unhealthy, polluted water limits leisure activities and expensive chemical treatments are required to treat reservoir water neither scenario is desirable, or even necessary. Tony Wynes, managing director of Aquarius Marine Group and developer of the Aquaerator, discusses the various options available today for quality water management.