Calgary reintroduces fluoride into drinking water after 4 years, following 62% support in plebiscite. Costing $28.1 million for upgrades, with $1 million annual operating spending. Health Canada-recommended 0.7 mg/L concentration aims to improve oral health. Despite opposition, studies show benefits. Safe Water Calgary seeks injunction against fluoridation. Previous history of contentious plebiscites on the issue. Calgary joins other Alberta cities and Canadian cities in adding fluoride to water supply.
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