Solvay Rosignano White beaches

Why is the Rosignano beach so white and its water so blue?
Solvay's plant in Rosignano discharges natural limestone into the sea.

For more than a century, Solvay's plant in Rosignano, Italy, along the Tuscan coast, has been producing soda ash, mainly used for the production of glass, and sodium bicarbonate.
The plant uses limestone as a raw material from nearby quarries of San Carlo, Livorno province. The powdery limestone remaining from the production cycle is then discharged from Solvay's plant into the nearby sea. These residues represent natural materials which contribute to the white color of Rosignano's beaches.
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