| 英文摘要 |
The goal of this project is to monitor the water qualities of nine cities and counties located in the southern area of Taiwan, and to proceed with the analysis of degree of pollution to various water bodies through understanding the trend of variation of various water qualities with time, the result of this investigation can provide grounds for policy making to environmental protection authorities. For river quality, there were 31 rivers, including main streams and sub-streams being monitored, 109 sampling sites were monitored monthly. Since there was a major water shortage for this year, particularly there were no rainfalls during the period from January to March, a part of rivers were nearly dried up, the test results for most pollutants were high, and thus the percentage of serious pollution would tend to look high. For ocean monitoring, there were 8 coastal areas being monitored, 42 sampling sites were monitored quarterly. Since the estuary areas were affected by the river during high tide, the concentrations of the inorganic salts were high in 1st quarter. There were also 5 beaches being monitored, 15 sampling sites were monitored biweekly during period of June to September. Among the 5 beaches, the water quality of Shan-yuan Beach was the best. Sixteen water reservoirs, 42 sampling sites were monitored quarterly, water levels had all reached the alarm level due to water shortage in 2nd quarter, eutrophication phenomena were observed for most of the water reservoirs. There were 189 ground water sampling sites for the nine cities and counties being monitored quarterly, with the exception of Tai Dong County, ammonia nitrogen, iron, and manganese were the major items with results that reached the regulatory monitoring criteria. The failing rates are between 10 to 90% for different cities and counties.
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