On Thursday evening Thimphu residents went home safe in the belief that the flash flood coming down from the Tango Cheri area was nothing to worry about. But that night several families residing in Changzamtog area could not sleep at all. With heavy rain all night, drain water flooded several homes and kept the residents awake right through the night. Karma, a tenant of a traditional house, which belongs to Ap Gomchen, said that drain water, which flows above their house gushed inside through the kitchen window. "The water around our house was at knee level,' he said, adding that the area was also filled with garbage that the drain water washed down from the Kalabazaar area. The affected residents of Changzamtog said that the main problem was with the drainage system, which Changzamtog which was non-existent, particularly in the residential areas. Kaka, an owner of a traditional house, said that, at around 12:30 am, drain water began to increase in volume and started entering the house. "Along with three others, I went to ascertain the source of the problem and found that the end of the drain, that comes along the roadside from Kalabazar, was overflowing towards our area,' he said. According to a tenant in Kaka's house, the speed and the volume of the drain water was strong enough to wash away a small child. "Our shoes and clothes, that were kept outside, were all washed away by the water,' said Tashi, who lives with her family in a cottage near Kaka's house. According to Pema, a Changzamtog resident, he went to the city corporation office to complain about the drain water problem on July 16 and met the officiating thrompoen, who directed him to the City's chief environment officer. "I couldn't meet him because he was out of office,' he said. According to another resident, Nima, the chief environment officer came to see the site and saw the problem of the drainage system a couple of days ago. "I complained to the City about the leakage of the safety tank above my house and the chief environment officer from the city came and even saw the problem of the drain and said that the City would fix it, but that it will take time.' The drain water also damaged a chilli garden. The surroundings of the residences, that were hit by the drain water, were all a mess with garbage all around and smelt awful when Kuensel went to the affected area.