SHENZHEN officials say water stored in Shenzhen Reservoir - a major source of the territory's drinking water - is free from pollution. The assurance came after reports that the water was threatened by untreated water discharged from squatters living near the reservoir. The Shenzhen Urban Management Office has promised to crack down on the dischargers - mostly illegal huts and factories - within a month. A spokesman for the Water Affairs Bureau said: 'Water quality of the reservoir remains satisfactory. We test water every day and so far there is no indication of serious pollution.' She said water stored in the reservoir came mainly from the East River via nine pumping stations, and streams nearby the reservoir were not major sources. Water imports to Hong Kong stop in November and December to allow maintenance work of water pipes and supply facilities on both sides of the border, according to a water purchase agreement between Hong Kong and Guangdong province. Water supply officials from both governments meet at least twice a year to discuss water supply and water quality. The next meeting will be held in December in Hong Kong. In Hong Kong, Deputy Director of Water Supplies Ko Chan-gock said there was no threat to drinking water quality, and he saw no need for a special meeting. 'We cannot expect raw water, whether it is collected from rains or imported from Shenzhen, to be 100 per cent pure. What we are concerned about is that our treatment works facilities are good enough to purify water for drinking. 'And so far the quality of drinking water supplied to households is very high.'