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Figure 3-a: Water Quality Index (WQI) & E. coli levels of the major rivers in Hong Kong

1. Mui Wo River (MW1 in Southern WCZ). Excellent. Excellent. Excellent. Excellent. Excellent. Good. Good. Good. Good. Water Quality Index. Fair. Fair. Fair. Fair. E. coli in 2004 : 380 cfu/100mL. Bad. Bad. Bad. Bad. Very Bad. Very Bad. Very Bad. Very Bad. Year.

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Figure 3-a: Water Quality Index (WQI) & E. coli levels of the major rivers in Hong Kong

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  1. 1. Mui Wo River (MW1 in Southern WCZ) Excellent Excellent Excellent Excellent Excellent Good Good Good Good Water Quality Index Fair Fair Fair Fair E. coli in 2004 : 380 cfu/100mL Bad Bad Bad Bad Very Bad Very Bad Very Bad Very Bad Year 2. Shing Mun Main Channel (TR19I in Tolo Harbour & Channel WCZ) Good Water Quality Index E. coli in 2004 : 1,900 cfu/100mL Year 3. Lam Tsuen River (TR12I in Tolo Harbour & Channel WCZ) Good Water Quality Index E. coli in 2004 : 15,000 cfu/100mL Year 4. Tai Po River (TR13 in Tolo Harbour & Channel WCZ) Good Water Quality Index E. coli in 2004 : 24,000 cfu/100mL Year Figure 3-a: Water Quality Index (WQI) & E. coli levels of the major rivers in Hong Kong

  2. 5. Ho Chung River (PR1 in Port Shelter WCZ) Excellent Excellent Excellent Excellent Excellent Good Good Good Good Water Quality Index Fair Fair Fair Fair E. coli in 2004 : 500 cfu/100mL Bad Bad Bad Bad Very Bad Very Bad Very Bad Very Bad Year 6. Tuen Mun River (TN6 in North Western WCZ) Good Water Quality Index E. coli in 2004 : 10,000 cfu/100mL Year 7. Sam Dip Tam Stream (TW3 in Victoria Harbour WCZ) Excellent Water Quality Index E. coli in 2004 : 18,000 cfu/100mL Year 8. Yuen Long Creek (YL3 in Deep Bay WCZ) E. coli in 2004 : 1,600,000 cfu/100mL Water Quality Index Very Bad Year Figure 3-b: Water Quality Index (WQI) & E. coli levels of the major rivers in Hong Kong

  3. 9. River Ganges (GR1 in Deep Bay WCZ) E. coli in 2004 : 130,000 cfu/100mL Excellent Excellent Excellent Excellent Good Good Good Good Water Quality Index Fair Fair Fair Fair Bad Bad Bad Bad Bad Very Bad Very Bad Very Bad Very Bad Year 10. River Indus (IN1 in Deep Bay WCZ) E. coli in 2004 : 190,000 cfu/100mL Bad Water Quality Index Year 11. River Beas (RB3 in Deep Bay WCZ) E. coli in 2004 : 47,000 cfu/100mL Fair Water Quality Index Year 12. Kam Tin River (KT2 in Deep Bay WCZ) E. coli in 2004 : 1,500,000 cfu/100mL Water Quality Index Very Bad Year Figure 3-c: Water Quality Index (WQI) & E. coli levels of the major rivers in Hong Kong

  4. 100 % WQO compliance 90 87% 87% 87% 85% 83% 83% 87% 82% 81% 79% 79% 80 81% 76% 79% 77% 76% 73% 73% 70 70% 60 04 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 Year Figure 4 Overall compliance with marine Water Quality Objectives in Hong Kong, 1986 - 2004

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