水质污染

water pollution

surname Shui

water / river / liquid / beverage / additional charges or income / (of clothes) classifier for number of washes

water quality

character / nature / quality / plain / to pawn / pledge / hostage / to question / Taiwan pr. [zhi2]

variant of 污[wu1]

dirty / filthy / foul / corrupt / to smear / to defile / dirt / filth

pollution / contamination / CL:個|个[ge4]

to pollute; to contaminate (lit. and fig.)

to dye / to catch (a disease) / to acquire (bad habits etc) / to contaminate / to add color washes to a painting