Without extensive anthropogenic activities at the hinterland of the beach, this well-attended bathing site usually enjoys good water quality, like other beaches in the same district. Although there is a small secondary sewage treatment plant (the Clear Water Bay 2nd beach sewage treatment plant), it appears not affecting the beach water quality seriously. The water quality is slightly deteriorated during the rainy season; a strong positive correlation can be found between rainfall and beach water quality.

Monthly distribution of beach gradings at Clear Water Second beach (2010-2014)

Aerial photo and local pollution sources

Source 1:

A small stream about 60 m south of the beach.

Source 2:

Storm outfall draining a small area.

Source 3:

Storm outfall which may receives bypass flow from the sewage treatment plant and local beach facilities.