<Original Report>Study on the Quality of Natural Spring Water in Ishikawa Prefecture

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  • TACHIMOTO Masao
    ISHIKAWA AGRICULTURAL COLLEGE, Laboratory of Microbial Resources, Research Institute of Agricultural Resources

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  • <原著論文>石川県の名水の水質調査
  • 石川県の名水の水質調査
  • イシカワケン ノ メイスイ ノ スイシツ チョウサ

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Six natural water springs in Ishikawa Prefecture were sampled and their physicochemical and microbiological characteristics were investigated to verify their aptitude as drinking water. In the six water samples, three of the hundred best water sites selected by the Environment Agency were involved. Many of the tested springs cleared the standards for drinking water, but some water contained a higher amount of general bacteria than the standard allows, and the necessity of boiling was indicated. There seemed to be no oroblem on the concentration of nitric acid and heavy metals as indices of the environmental pollution. Both electric conductivity and hardness index were very low for the water of Kannonyama in Tatsunokuchi Town, which seemed to be remarkably soft water. Many people daily drink natural spring water in an age of booming natural water. However, there are some cases in which the management system is unclear, and it will be necessary to improve the system to better check the water quality.

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