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 spa water quality problems literacy skills to read and interpret regulatory and manufacturer’s guidelines for testing and treating spa water problems numeracy skills to perform calculations related to spa water treatment research skills to identify and locate online support for performing calculations related to treating spa water problems technology skills to use spa water sampling and testing equipment Required knowledge Australian Competition and Consumer Commission product safety guidelines causes and remedies of backwash discharge chemical dosing benefits and techniques common spa water problems, reasons and remedies: bather eye irritation chlorine odour cloudy water discoloured water green water metal fixtures corroding scale water has dark appearance commonwealth, state or territory, and local government legislation and regulations, and Australian standards impacting on spa water quality related to: chemicals dangerous goods environment protection environmental health microbiological standards for spas spas waste disposal work health and safety disinfection practice: chlorine chemistry disinfectants: bromine chlorine ozone ultraviolet light - hydrogen peroxide dosing frequency principles means health problems associated with spas: dermatitis gastro intestinal infection heat stress legionnaires’ disease medications respiratory infection skin irritation hot water chemistry: chemical overdosing foaming hardness pH and total alkalinity suspended and dissolved solids water clarity water temperature hot water health benefits infectious agents that grow in spas microorganisms found in spa water: algae bacteria protozoa virus spa filters: cleaning inspection microbial load purpose types spa water contamination: causes and remedies spa water testing: frequency methods microbiological monitoring parameters procedures test kit care treatments for spa water problems: reasons for treatment techniques treatment techniques: determining and correcting pH level sanitising the spa shock dosing determining and correcting total alkalinity water replacement water balancing: balance factors calcium hardness pH principles saturation index temperature total alkalinity total dissolved salts water quality: filtration effectiveness impact of number of users on spa water quality microbial load water chemistry: chemical composition chemical imbalance and its consequences ways of rectifying chemical imbalance |