Calcium phosphates are white solids of nutritional value[2] and are found in many living organisms, e.g., bone mineral and tooth enamel.

[4] Various calcium phosphate minerals, which often are not white owing to impurities, are used in the production of phosphoric acid and fertilizers.

Overuse of certain forms of calcium phosphate can lead to nutrient-containing surface runoff and subsequent adverse effects upon receiving waters such as algal blooms and eutrophication (over-enrichment with nutrients and minerals).

Calcium phosphate stones tend to grow in alkaline urine, especially when Proteus bacteria are present.

[6] Calcium phosphate is the usual constitution of microcalcifications of the breast, particularly dystrophic calcifications.