Annual Report - Water Supplies Department 2016 - 2017

WSD | Annual Report 2016/17 | - 參數 Parameter 單位 Unit 監測數據 Monitoring Data (04/2016 03/2017) 世衞 2011 準則值 WHO 2011 Guideline Value 達標 Compliance 最低值 Minimum 最高值 Maximum 平均值 Average 氟樂靈 Trifluralin 微克╱公升 μg/L < 5.0 < 5.0 < 5.0 20 √ 鈾 Uranium 毫克╱公升 mg/L < 0.0002 0.0005 < 0.0002 0.03 (P) √ 氯乙烯 Vinyl chloride 微克╱公升 μg/L < 0.2 < 0.2 < 0.2 0.3 √ 二甲苯 Xylenes 微克╱公升 μg/L < 125 < 125 < 125 500 (C) √ 註釋： Note: (1) 以上是有關食水水質的摘要報告。 (1) This is a summary report on drinking water quality. (2) 各數值是根據水務署水質科學部現行品質保證指 (2) All values are compiled in accordance with requirements stipulated by the 引所訂的要求而編製。 current quality assurance protocol of the Water Science Division of WSD. (3) 根據世衞 2011 ： (3) According to WHO 2011: P = 暫定準則值，因為健康數據資料存在不確定 P = provisional guideline value because of uncertainties in the health 性。 database. T = 暫定準則值，因為計算所得準則值低於實際 T = provisional guideline value as calculated guideline value is below 處理方法或水源保護等所能達到的水平。 the level that can be achieved through practical treatment methods, source protection, etc. A = 暫定準則值，因為計算所得準則值低於所能 A = provisional guideline value as calculated guideline value is below the 達到的定量水平。 achievable quantification level. D = 暫定準則值，因為消毒程序可能引致超過準 D = provisional guideline value as disinfection may result in the guideline 則值。 value being exceeded. C = 當該物質濃度等於或低於健康基礎準則值 C = concentrations of the substance at or below the health-based guideline 時，可能導致水的外觀、味道或氣味改變， value may affect the appearance, taste or odour of the water, leading 引起用戶投訴。 to consumer complaints. 110