Hardest and softest tap water in Taiwan
All 265 cities in Taiwan with published data, ranked by total hardness. The national median is 126 mg/L.
Taiwan Water Corporation reports total hardness in mg/L CaCO₃; the drinking-water standard is 300 mg/L.
25 cities with the hardest water
| # | mg/L | mg/L | ||
|---|---|---|---|---|
| 1 | Neimen · Kaohsiung | 293 | 293 | very hard |
| 2 | Qishan · Kaohsiung | 293 | 293 | very hard |
| 3 | Sandimen · Pingtung County | 275 | 275 | very hard |
| 4 | Yanbu · Pingtung County | 275 | 275 | very hard |
| 5 | Ligang · Pingtung County | 251 | 251 | very hard |
| 6 | Neibu · Pingtung County | 248 | 248 | very hard |
| 7 | Renai · Nantou County | 248 | 248 | very hard |
| 8 | Gaoshu · Pingtung County | 243 | 243 | very hard |
| 9 | Fangyuan · Changhua County | 233 | 233 | very hard |
| 10 | Yongjing · Changhua County | 231 | 231 | very hard |
| 11 | Liugui · Kaohsiung | 230 | 230 | very hard |
| 12 | Xihu · Changhua County | 230 | 230 | very hard |
| 13 | Pitou · Changhua County | 225 | 225 | very hard |
| 14 | Tianwei · Changhua County | 224 | 224 | very hard |
| 15 | Erlin · Changhua County | 223 | 223 | very hard |
| 16 | Zhutian · Pingtung County | 221 | 221 | very hard |
| 17 | Linnei · Yunlin County | 219 | 219 | very hard |
| 18 | Minxiong · Chiayi County | 219 | 219 | very hard |
| 19 | Wandan · Pingtung County | 215 | 215 | very hard |
| 20 | Fengshan · Kaohsiung | 214 | 214 | very hard |
| 21 | Taitung · Taitung County | 214 | 214 | very hard |
| 22 | Dounan · Yunlin County | 210 | 210 | very hard |
| 23 | Mituo · Kaohsiung | 210 | 210 | very hard |
| 24 | Qiaotou · Kaohsiung | 210 | 210 | very hard |
| 25 | Tianliao · Kaohsiung | 210 | 210 | very hard |
25 cities with the softest water
| # | mg/L | mg/L | ||
|---|---|---|---|---|
| 1 | Pinglin · New Taipei | 23 | 23 | soft |
| 2 | Shimen · New Taipei | 25 | 25 | soft |
| 3 | Sanzhi · New Taipei | 25 | 25 | soft |
| 4 | Danshui · New Taipei | 25 | 25 | soft |
| 5 | Shuangxi · New Taipei | 26 | 26 | soft |
| 6 | Gongliao · New Taipei | 26 | 26 | soft |
| 7 | Xizhi · New Taipei | 26 | 26 | soft |
| 8 | Zhonghe · New Taipei | 27 | 27 | soft |
| 9 | Xindian · New Taipei | 27 | 27 | soft |
| 10 | Taipei · Taipei | 27 | 27 | soft |
| 11 | Sanchong · New Taipei | 27 | 27 | soft |
| 12 | Pingxi · New Taipei | 31 | 31 | soft |
| 13 | Jinshan · New Taipei | 31 | 31 | soft |
| 14 | Wulai · New Taipei | 32 | 32 | soft |
| 15 | Ruifang · New Taipei | 36 | 36 | soft |
| 16 | New Taipei · New Taipei | 36 | 36 | soft |
| 17 | Fengbin · Hualien County | 38 | 38 | soft |
| 18 | Qidu · Keelung | 40 | 40 | soft |
| 19 | Heping · Taichung | 40 | 40 | soft |
| 20 | Keelung · Keelung | 42 | 42 | soft |
| 21 | Jianshi · Hsinchu County | 46 | 46 | soft |
| 22 | Sanxing · Yilan County | 47 | 47 | soft |
| 23 | Alishan · Chiayi County | 49 | 49 | soft |
| 24 | Fuxing · Taoyuan | 51 | 51 | soft |
| 25 | Shiding · New Taipei | 52 | 52 | soft |