Kumamoto City is a worldwide exceptional urban area where 100% of its water supply comes from groundwater; however, reductions in groundwater amount and nitrate pollution level are current concerns. In this study, the water quality characteristics of well water samples collected in Kumamoto City were investigated. Most of these samples showed water quality characteristics of the “alkali metal-bicarbonate type”, which are typical of Japanese groundwater. They also contained equivalent amounts of Ca2+, Mg2+ and Na+. The well water samples were divided into 11 large groups on the basis of their water quality characteristics related to groundwater flow. No significant change in the water quality of wells in Kumamoto City has been observed over the past 20 years except for a few wells. From the results of a water tasting test, the taste of Kumamoto City tap water was considered to be the same or better than that of commercial bottled waters, and a truly tasty water index (TTWI) was established on the basis of the relationship between the water characteristics and the results of the water tasting test.
雑誌名
水環境学会誌
巻
32
号
7
ページ
383 - 388
発行年
2009-07-10
書誌レコードID
AN10372439
DOI
10.2965/jswe.32.383
権利
(c) 2010 社団法人 日本水環境学会
情報源(ISSN)
09168958
フォーマット
application/pdf
形態
481474 bytes
著者版フラグ
publisher
日本十進分類法
518.12
その他の言語のタイトル
Water Quality Characterization and Evaluation of Kumamoto City Drinking Groundwater as Tasty Water
熊本市飲用地下水水質の特徴とおいしい水としての評価に関する考察
32_383.pdf
(481.47KB)
