いどみず
well water
Noun
今日こんにちは体調たいちょうが悪わるい。あの井戸水いどみずが原因げんいんだ。
I don't feel well today. That well water is the reason.
水道水すいどうすいで年ねん1回かい、井戸水いどみずなら年ねん2回かいの水質検査すいしつけんさをお勧すすめします。
We recommend that mains water have a water-quality test carried out once a year, well water twice a year.