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日本水質超乾淨?醫示警:夏天「1狀況」恐食物中毒

ETtoday
2026/04/28 | 3分鐘閱讀

記者劉維榛/綜合報導

日本飯店水龍頭到底可否生飲?旅日達人林氏璧表示,日本飯店自來水原則上可生飲,但仍要留意旅館標示與管線狀況,老舊飯店或蓄水槽供水可能不建議直接喝,尤其夏天恐有中毒風險。對此,他建議早上可先放水30秒以上,或煮沸後再喝,降低拉肚子風險,也能讓味道更順口。

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林氏璧在臉書表示,近日被問到「去日本旅遊,飯店的水真的可以水龍頭開了就喝嗎?」身為旅遊達人的他指出,根據日本水道法,自來水檢驗項目相當嚴格,一般情況下,日本全國自來水是可以安全生飲的,也就是說,原則上是可以的,但也有例外。

他直言,每個地方、每間旅館仍可能有差異,像是許多新旅館會在洗手台旁標示「飲用水」或「此水可以生飲」;但若是歷史較久、管線老舊,或使用蓄水槽供水的飯店,可能會標示「此水非飲用水」,建議旅客改喝熱水瓶或冰箱內礦泉水。

日本自來水很安全?達人揭「1風險」夏天更要小心

林氏璧透露,自己詢問身邊住在日本的朋友後,發現多數人平常在家不會直接生飲自來水,而是煮過、過濾後才喝,或另外購買礦泉水。

值得留意的是,東京「日本橋人形町消化器・內視鏡診所」院長石岡充彬醫師曾警告,日本自來水雖達安全標準,卻並非絕對無虞,特別是夏天更容易出問題。他解釋,日本水道水之所以能生飲,關鍵是水中的「殘留氯」能抑制、消滅細菌。但夏季氣溫高會讓氯氣快速揮發,若水龍頭長久未使用,管線內積水的氯濃度降低,細菌便可能趁機繁殖,造成腹瀉、嘔吐等食物中毒症狀。

至於該如何降低風險?石岡充彬醫師表示,夏季高溫可能讓水中殘留氯揮發,若水龍頭長時間未使用,管線內滯留水恐有滋生細菌風險,因此早上開水龍頭可先放水30秒以上,濾水器處理過的水不要久放,存水則務必冷藏並在24小時內喝完。

對林氏璧來說,他在日本旅館多半仍會煮沸再喝,除了衛生考量,主要是自來水中會有餘氯味道,煮沸後可以消散,喝起來比較順口,加上大多數日本飯店房內都備有快煮壺,非常方便。

總而言之,林氏璧坦言,出門在外最怕就是病從口入,因吃下不乾淨的水拉肚子,不但可能無法享用美食,甚至還可能要跑醫院,「原則上在日本旅館生飲是安全無虞的,但我個人不會建議大家總是這樣做!」

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本文轉載自ETtoday,原文標題:日本水質超乾淨?醫示警:夏天「1狀況」恐食物中毒

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