Pictured are the clarifiers of the Sha Tin Water Treatment Works. The water on the right-hand side has quite a lot of particles and impurities before clarification, while the water on the left is very clear after clarification.

Pictured are the clarifiers of the Sha Tin Water Treatment Works. The water on the right-hand side has quite a lot of particles and impurities before clarification, while the water on the left is very clear after clarification.

Pictured are the clarifiers of the Sha Tin Water Treatment Works. The water on the right-hand side has quite a lot of particles and impurities before clarification, while the water on the left is very clear after clarification.