Brewing Water Sources and Treatment Flashcards
Water sources
What is the initial state of water in the water cycle?
Pure water vapour in the clouds
What forms does water take when it falls to the earth?
Precipitation (e.g., rain, snow, hail)
What happens to surface water in the water cycle?
It can trickle into rivers or lakes or through the soil into ground water
How long can ground water remain before returning to surface water?
Many years (thousands)
What is the final route for ground water in the water cycle?
It can re-emerge as a spring, river, lake, or ocean
What is the term for water that is used in the brewing process?
Brewing water or brewing product water
What does ‘potable’ mean in relation to water?
Water that is safe to drink
According to the World Health Organisation, what defines safe drinking water?
Water that does not represent risk to health over a lifetime of consumption
What is the microbiological requirement for potable water?
Free of pathogens, with safety levels of 0 coliform bacteria / 100 ml water
What are the visual characteristics of potable water?
Colourless and clear
What taste and smell characteristics should potable water have?
Tasteless and odourless
What is the optimal pH level for potable water?
Close to neutral pH (7.0)
What heavy metals should potable water be free from?
Heavy metal ions
