河溪水質逐漸改善
水質指數等級
年份
1988 1989 1990 1991 1992 1993
極佳
12.7% 18.4% 19.7% 9.5% 2.7% 32.4%
良好
14.3% 18.4% 22.4% 29.7% 43.3% 18.2%
普通
20.6% 21.1% 21.1% 20.3% 18.9% 20.8%
惡劣
25.4% 17.1% 23.7% 18.9% 18.9% 14.3%
極劣
27.0% 25.0% 13.1% 21.6% 16.2% 14.3%
(按監 測站數目的百分比)          

 

河溪水質逐漸改善
水質指數等級
年份
1994 1995 1996 1997 1998 1999 2000
極佳
28.4% 35.0% 37.7% 37.2% 38.5% 33.8% 47.4%
良好
23.0% 22.1% 22.1% 30.8% 28.2% 31.2% 26.9%
普通
23.0% 18.2% 16.9% 16.7% 17.9% 18.2% 15.4%
惡劣
14.8% 13.0% 13.0% 12.8% 9.0% 11.7% 10.3%
極劣
10.8% 11.7% 10.4% 2.5% 6.4% 5.1% 0.0%
(按監 測站數目的百分比)          

 

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