
Ever wondered where Taiwan’s most acidic location is? Look no further than Hsinchu. According to last year’s data, Taiwan’s most acidic rain was concentrated in the north. Hsinchu was at the top of the leaderboard, with a pH value of 5.29. It took the title from Zhongli, which was No. 1 for four consecutive years. According to the EPA, it’s not that Hsinchu has gotten worse. Instead, it’s that the air quality in Zhongli has made a recovery.
Sun Chung-wei
EPA air quality protection division
Hsinchu has stayed at the same level in recent years – what’s notable is Zhongli. Zhongli has improved significantly since around 2020, when the pH still tested below 5. But between 2021 and 2022, there was improvement. Through revising regulations, we significantly reduced the sulfur content of fuel. We’ll continue to strengthen our oversight of mobile sources of air pollution. We’ll also work in line with Taiwan’s 2050 net-zero policy in promoting electric vehicles.
Not only had Zhongli improved, but all 14 of Taiwan’s monitoring stations had pH values above 5, with an average value of 5.75. This means that technically, none of them met the EPA’s criteria for acid rain, which is defined by a pH below 5. But even so, doctors say that exposure to a pH of 5.5 or lower can disrupt the pH balance of hair follicles. So when those raindrops fall, reach for an umbrella to stay protected.
您知道全台最酸的地方在哪裡嗎?根據全台14個酸雨測站資料顯示,去年前五酸都集中在北部,尤其新竹以pH值5.29排行第一,超越蟬聯4年冠軍的中壢。不過環保署分析,並非新竹變酸了,而是中壢的空汙品質改善許多,才讓排名出現洗牌。
[[環保署空保處簡任技正 孫忠偉]]
“新竹近幾年都是持平的狀態,比較特別的是中壢,中壢近幾年從大概2020年,還有測到5以下,但是在2021年到2022年持續的改善,我們透過法規的修訂,使得燃料的含硫量大幅減少,所以我們未來也會持續加強,對移動汙染源的改善,也會配合國家2050淨零的策略,來推動電動車”
不僅中壢改善許多,再看看全台14個測站,pH值都在5以上,整體平均為5.75,未達環保署的酸雨標準。不過醫師提醒,長期處在雨滴是pH值5.5的環境之下,有可能讓毛囊酸鹼平衡發生問題,建議下雨時還是要撐雨傘、戴帽子。
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