People in Harbin, north-eastern China, queue for water after the city's own supplies were contaminated by a benzene leak.
The 80km (50 mile) stretch of contaminated water is moving down the Songhua river.
The army has brought in thousands of tonnes of bottled water, after water supplies to Harbin were cut off.
Residents, unsure of how long the water stoppage will last, are desperate to stock up with supplies.
Some 100 new wells are being dug across the city to provide extra water.
The leak was caused by a massive explosion at a PetroChina benzene factory in the city of Jilin on 13 November.