水质污染 shuǐzhìwūrǎn water pollution Origin Definitions Defs Strokes Stroke Words Sentences Sents 水质 水質 shuǐzhì water quality The quality or purity of water, especially in reference to drinking water.污染 wūrǎn verbnoun pollution; to pollute pollution; contamination; to pollute or contaminate (physically or figuratively)