National Drinking Quality Standards and Directives, 2005.

These National Drinking Quality Standards and Directives are enacted in accordance with the provision of Water Resources Act, 2049. The Text consists of Section (A) the National Drinking Water Quality Standards (NDWQS) and Section (B) Implementation of National Drinking Water Quality Standard.
The first phase NDWQS implementation will be in the period of 5 to 10 years of approval of NDWQS. The second phase NDWQS implementation will be in the period of 5 to 10 years of approval of NDWQS. All water suppliers of rural community water supply schemes should supply drinking water as per NDWQS within 5 years of second phase.