In recent years, there have been some efforts and collaboration between local and foreign universities to develop access to safe water in the country by introducing water filtration systems. There is a growing concern among local populations over the serious public health issues associated with water contamination caused by pollution as well as the high levels of arsenic in groundwater sources. The government of Netherlands has been providing aid focusing its investments mainly on water-related sectors including water treatment projects. Regarding sanitation, 78% of Vietnam's population has access to "improved" sanitation—94% of the urban population and 70% of the rural population. However, there are still about 21 million people in the country lacking access to "improved" sanitation according to a survey conducted in 2015. In 2018, the construction ministry said the country's water supply, and drainage industry had been applying hi-tech methods and information technology (IT) to sanitation issues but faced problems like limited funding, climate change, and pollution. The health ministry has also announced that water inspection units will be established nationwide beginning in June 2019. Inspections are to be conducted without notice, since there have been many cases involving health issues caused by poor or polluted water supplies as well unhygienic conditions reported every year.