sui genkan'yō
1. headwater conservation; water source protection
Noun
#178930
1. headwater conservation; water source protection
1. extremely important; essential
1. tolerance; open-mindedness
1. idiom; set phrase
1. source of river; fountainhead
1. Likely; Essential
1. Was important; Was essential
1. Essential; Important
1. Was not important.; Was not essential.
1. Was not important.; Was not essential.