1. Imminent risk of a global water crisis, warns the UN World Water Development Report 2023 | UNESCO. https://www.unesco.org/en/articles/imminent-risk-global-water-crisis-warns-un-world-water-development-report-2023.
2. SDG Indicators. https://unstats.un.org/sdgs/report/2022/.
3. THE 17 GOALS | Sustainable Development. https://sdgs.un.org/goals.
4. Goal 6 | Department of Economic and Social Affairs. https://sdgs.un.org/goals/goal6.
5. P. Pal, Chapter 6 - Industry-Specific Water Treatment: Case Studies. in Industrial Water Treatment Process Technology (ed. Pal, P.), 2017, pp. 243–511.