Lo So Shing Beach has very good water quality. The annual ranking of the beach has been maintained as “Good” since EPD’s beach water quality monitoring programme in 1986. During a bathing season, the beach mostly achieves the weekly rating of Grade 1, while occasionally it hovers to Grade 2.
During and after periods of heavy rain, many beaches are likely to be more polluted than the beach grades suggest. Bathers should avoid swimming at beaches for up to three days after a storm or heavy rain.
The public are also advised to avoid swimming at "Grade 4" beaches until the water quality has improved.