456/5000 Mùqián táizhōng shì héchuān shuǐzhì zhuàngkuàng lìnián lái dàzhì wěndìng, shòudào dìzhí yǐngxiǎng zhòngjīnshǔ měng (Mn) wèi jīngcháng xìng chāobiāo zhī xiàngmù. Bùfèn zhēnduì xìng cè zhàn rú dà dù xī yǔ dà'ānxī bùfèn, yīn wèiyú héchuān chū hǎikǒu hé duàn ér shòu zhǎng tuìcháo zhī hǎishuǐ yǐngxiǎng zhì dǎodiàn dù piān gāo, ér dà ānxī zhōng kē sān qí fàngliú kǒu xiàyóu zhī zǒng lín yǔ āndàn zhí yǒu piān gāo de qíngxíng. Dà jiǎ xī chū hǎikǒu yúmín lāo bǔ mányú miáo hé duàn chūxiàn duō cì xuánfú gùtǐ piān gāo zhī qíngxíng,SS yìcháng běn (106) niándù chūxiàn fāshēng yú 4,10 yuèfèn shàng, xiàyóu cè zhàn, yīng fēi shǔ jìjié xìng zhī yīnsù yǐngxiǎng. Shì qū qūyù páishuǐ cè zhàn chúle nánbian xī wài, chéngxiàn `zhōng dù wūrǎn'~`yánzhòng wūrǎn'zhī shuǐzhì wūrǎn chéngdù, nánbian xī shǔ `qīng dù wūrǎn'. Hǎi xiàn héchuān jí qūyù páishuǐ zhī táizhōng gǎng qū qūyù páishuǐ chéngxiàn `wèi (shāo) shòu wūrǎn'~`yánzhòng wūrǎn', ér dà ān dà jiǎ dìqū qūyù páishuǐ zé chéngxiàn `wèi (shāo) shòu wūrǎn'zhī shuǐzhì wūrǎn chéngdù. Hǎiyù shuǐzhì jiǎncè jiéguǒ xiǎnshì, táizhōng dìqū yánhǎi shuǐzhì zhuàngkuàng shífēn liánghǎo, jūn fúhé `yǐ lèi hǎiyù dìmiàn shuǐtǐ shuǐzhì biāozhǔn'. Hǎitān shuǐzhì 2~5 yuè jí 8 yuèfèn shǔ `yōuliáng'děngjí;1,7,10 yuè jí 11 yuèfèn shǔ `bùyí'děngjí;6,9 yuè jí 12 yuèfèn zé shǔ `pǔtōng'děngjí, qízhōng dàcháng gǎnjùn qún, cháng qiújùn qún, zhuó dù shòu hǎiliú jí dà ānxī huì rù yǐngxiǎng ér piān gāo, dǎozhì hǎitān shuǐzhì wèi néng quán niándù wéichí `yōuliáng'děngjí. At present, the river water quality in Taichung City is generally stable over the years, and the heavy metal manganese (Mn) affected by the geology is a recurrent project. Some of the targeted stations such as Dawood Creek and Tai An Creek were affected by rising tide of seawater located in the estuarine reach of the river with high conductivity. However, the total phosphorus and ammonia nitrogen values High situation. The case of excessive suspended solids in the section of river fishing by the fishermen at the mouth of the large river in the estuary occurred many times. The occurrence of SS anomaly (106) occurred in the upper and lower reaches of the upper and lower reaches of the station in April and October should not be affected by seasonal factors . In addition to the south side river stream in the urban area, the water quality of the "moderately polluted" to "severely polluted" water is polluted. The southern stream is slightly polluted. Drainage in the sea areas of Taiwan, Hong Kong, Taiwan, Hong Kong, Taiwan, Hong Kong and Taiwan has been "not (slightly) contaminated" to "heavily polluted", while that of the Greater Tai Tung area has been shown to be "not (slightly) contaminated" with water quality. The result of sea area water quality test showed that the coastal water quality in Taichung area is very good and both of them are in conformity with the "Surface Water Quality Standards of Class B Sea Areas". The beach water quality was excellent from February to May and August. It was classified as "unfit" in January, July, October and November, and "normal" in June, September and December, of which coliform, intestine The bacterial flora and turbidity were high due to the influence of current and Tai An River. As a result, the water quality of the beach failed to maintain "good" grade throughout the year.

Mild pollution, Moderately polluted, Serious pollution, Not contaminated