The HRWS obliges governments to ensure that people can enjoy quality, available, acceptable, accessible, and affordable water and sanitation. Affordability of water considers the extent to which the cost of water becomes inhibitive such that it requires one to sacrifice access to other essential goods and services. Generally, a rule of thumb for affordability of water is that it should not surpass 3-5% of households income. Accessibility of water considers the time taken, convenience in reaching the source and risks involved while getting to the source of water. Availability of water considers whether the supply of water is available in adequate amounts, reliable and sustainable. Quality of water considers whether water is safe for consumption, including for drinking or other activities.