Why is the water so blue in a quarry?

Rock of Ages When the water in our quarry pit is exposed to the air, it degasses and allows the pH level to rise and for minerals to precipitate. The minerals remain suspended in the water column giving it that “Bahamian” blue color.

Do all quarries have water?

Many quarries naturally fill with water after abandonment and become lakes. Others are made into landfills. Water-filled quarries can be very deep, often 50 ft (15 m) or more, and surprisingly cold, so swimming in quarry lakes is generally not recommended.