Local media reported that Lanzhou residents had complained about smelly tap water last month, but city officials claimed the water quality was up to standards. 
Vyombo vya habari vya China vimeripoti kuwa, mwezi uliopita, wakazi wa Lanzhou walitoa malalamiko yao kuhusu harufu mbaya ya maji ya bomba, lakini viongozi wa jiji walisema kuwa ubora wa maji ulikuwa wa kiwango kilichokubalika.