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Environmental Protection Interactive Centre

Recent River Water Quality Information ( Dissolved Oxygen and E.coli in river waters )

What are Dissolved Oxygen and E.coli?

Dissolved Oxygen (DO) and E.coli are two important parameters indicating the general conditions of water and its health risk to the public.
Dissolved Oxygen indicates the total amount of oxygen dissolved in the river and stream water. Most aquatic organisms need oxygen for respiration and maintenance of life.
E.coli is a kind of bacteria found in human faeces, often used as an indicator of sewage pollution. A higher E.coli count indicates greater faecal contamination and higher health risk.
The recent DO and E.coli data at selected stations in 12 major rivers and streams are available on this web page.

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Display data under following condition
Map of Water Control Zone
TW3TN6KT1YL3GR1RB3IN1PR1MW1TR13TR12ITR19ISam Dip Tam Stream (TW3)Tuen Mun River (TN6)Kam Tin River (KT1)Yuen Long Creek (YL3)River Ganges (GR1)River Beas (RB3)River Indus (IN1)Ho Chung River (PR1)Mui Wo River (MW1)Tai Po River (TR13)Lam Tsuen River (TR12I)Shing Mun River (TR19I)