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May 14, 2025
美國要聞

環保署放鬆飲用水中「永久化學物質」的限制

聯邦環保署表示,計劃放鬆對飲用水中某些「永久性化學物質」的限制,但同時維持兩種常見化學物質的標準。***

拜登政府去年首次製定了聯邦飲用水中全氟烷基和多氟烷基物質(PFAS)的限制。研究發現,相關物質增加了心血管疾病、某些癌症和嬰兒出生時體重過低的風險。

聯邦環保署現在將取消並重新考慮對三種 PFAS 的限制,當中包括在北卡羅來納州發現的所謂 GenX 物質,以及幾種 PFAS 混合物。

拜登政府的規定也為兩種常見的 PFAS 設定了每萬億份之四的標準,包括全氟辛烷磺酸(PFOS)與全氟辛酸(PFOA),環保署將保留相關規定,但給予公用事業公司額外兩年的時間來遵守規定。

環保署署長李修頓強調,當局致力於維護全國性標準,保護國民免受侵害,同時向公用事業提供靈活性。

PFAS 通常被稱為「永久性化學物質」,是人為製造,而且幾乎無處不在,並可能需要數千年的時間才能在環境中分解。

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