communication skills to interact in an ethical manner with clients from diverse social, economic and cultural backgrounds decision-making and problem-solving skills to identify types and appropriate treatments for water quality problems in swimming pools and spas literacy skills to read and interpret regulatory and manufacturer guidelines for testing and treating water problems numeracy skills to perform calculations related to water treatment research skills to identify and locate information on ways of treating water problems in swimming pools and spas technology skills to use water sampling and testing equipment Required knowledge chemical dosing: chemicals, procedures and benefits common swimming pool and spa water problems: algae bather discomfort biofilm chlorination problems cloudy water combined chlorine disinfectant by-products discoloured water faecal accident/incident foaming metal fixture corroding nitrates phosphates recreational water illnesses scale scum line stains water balance problems commonwealth, state or territory, and local government legislation and regulations, and Australian standards impacting on identifying and treating water problems in swimming pools and spas related to: chemicals dangerous goods environment protection environmental health work health and safety waste disposal contamination response: environmental faecal non-faecal other disinfection: chlorine chemistry disinfectants principles health effects of contaminated water in swimming pools and spas: faecal incident response faecal-related illnesses recreational water illnesses pool water contamination: bacteria protozoa virus testing: for: calcium hardness chlorine demand cyanuric acid disinfection hydrogen peroxide metals nitrates non-halogen oxidisers oxidation oxidation reduction potential pH PHMB phosphates salt temperature total alkalinity total dissolved solids water balance frequency methods: colorimetric electronic titrimetric turbidimetric procedures sampling test kit: care contents treatments for swimming pool and spa water problems: algaecides breakpoint chlorination chemical disinfection chlorination corrosion prevention discoloured water filtration oxidation ozone shock dosing spa water treatment: reasons for treatment techniques treatment techniques: change spa water, determine and correct pH level, sanitise the spa, and determine and correct total alkalinity superchlorination ultraviolet (UV) systems water replacement water balancing: adjusted alkalinity balance factors calcium hardness pH principles saturation index temperature testing total alkalinity total dissolved salts water quality parameters |