治水

治水	zhì shuǐ	to manage water storage and flows, esp. to control flooding
治	zhì	to rule / to govern / to manage / to control / to harness (a river) / to treat (a disease) / to wipe out (a pest) / to punish / to research
水	Shuǐ	surname Shui / Shui ethnic group
水	shuǐ	water / (after a name) ... River / to swim (used mostly in 会水 and 水性) / (coll.) lacking in substance; shoddy / (bound form) additional cost; extra income / classifier for washings of a garment