In general, water is abundant in Papua New Guinea. The high average rainfall ranging from 2000mm to 6000mm ranked PNG to be one of the wettest nations in the world. The regulation of Water Resources and Wastewater Discharge into the environment (groundwater, rivers, springs, lakes and sea) is the function of the Department of Environment and Conservation. The Environment Act 2000 provides comprehensive standards for protection of environment and water. The Drinking Water Quality Standards in PNG is adopted from the WHO Drinking Water Quality Guidelines.
