Pollution mode of Cafeteria New is very similar to its immediate neighbour - Golden beach. Beach water quality here is statistically correlated with tide level. Worse water quality is usually found during a high tide condition, suggesting that effluent from nearby submarine outfalls (e.g. Pillar Point Sewage Treatment works) has been brought in by tidal current. Rainfall appears to be another important parameter governing changes in water quality, since violation in water quality objective usually happens in July and August.

Monthly distribution of beach gradings at Cafeteria New beach (2010-2014)

Aerial photo and local pollution sources

Source 1:

A storm drain between Cafeteria Old and Cafeteria New.