Currently, in Ho Chi Minh City there are many canals, canals, river slums in the city that are polluted and lose urban beauty. Currently, the most polluted area in Ho Chi Minh City is Xuyen Tam canal, located in Binh Thanh district. With a length of 6.2 km, about 1,600 households are living around this polluted canal. The Xuyen Tam canal system currently carries the wastewater of 40% of people in Binh Thanh district with about 40,000m3 / day of untreated wastewater. In District 4, District 7, District 8 ... (HCMC), it is not difficult to see dilapidated houses, temporarily shielded with old corrugated iron roofs, ragged cardboard pieces, lying on the Weak stakes floating on the stinking water. Most of the people living there are workers, poor families, people from different provinces flock to Ho Chi Minh City to settle, they do all kinds of jobs to make a daily living. In Xang canal (District 8), people are using a scoop to dig ditches to bury more bars, prevent landslides, and expand their houses to the side of the canal. Big cranes are operating above the slums in District 4, many large projects and projects are about to be built next to the slums.