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15 cards from this deck
Water safe to drink, treated to remove harmful substances
Remove insoluble particles
Kill harmful microbes
Chlorine, ozone, ultraviolet light
Making seawater potable
Distillation (boiling seawater)
Energy-intensive and costly
Membrane systems
Adding fluoride to water supply
Prevents tooth decay
Birmingham, 1964
Individual local authorities
Fluorosis (tooth discolouration/decay)
Mass medication, forced consumption
Low levels
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