Inadequate Sanitary Facilities At Dhaka Water And Sewerage...

3. Inadequate Sanitary Facilities Inadequate sanitation facilities pose a serious environmental threat in Bangladesh. Dhaka Water and Sewerage Authority (DWASA) can serve only for 15 to 20% of city population. In absence of the sanitation and infrastructural services, 40% having septic tank and soak pit, 15% using pit latrines and 30% using open latrines. The sewage is mostly released into low-lying areas and river water in untreated manner causing great environmental hazards. 4. Arsenic Contamination of Ground Water Arsenic in ground water poses a serious environmental hazard for Bangladesh. About ninety-seven percentages (97%) of Bangladesh people have been using ground water as the main source of drinking water but the water has been threatened by arsenic contamination. More than half (52%) of the studied population drink well-water containing 50ug/L of arsenic and more than two-thirds (70%) drink well-water containing 10ug/L of arsenic. The acceptable level of arsenic in drinking water is 0.05 mg/L for Bangladesh but some places it is found more than 70 times higher than that standard. About 80 million people are at a risk of arsenic contamination. Noise Pollution The noise pollution is also a major health hazard in Bangladesh. According to World Health Organization (WHO), 60 decibel (DB) sound can make a man deaf temporarily and 100 DB sound can cause complete deafness. According to the Department of Environment (DOE), the perfect sound condition for