This chapter aligns with Goal 6: Clean water and sanitation by reviewing the role of nanostructured materials as a promising alternative to conventional methods and is effective in eliminating water and wastewater contaminants, such as inorganics (toxic metals), organics, and microorganisms.

This chapter aligns with SDGs 3 and 6, by providing applications of geospatial technologies to monitoring water quality.

This chapter aligns with Goal 6: Clean water and sanitation by reviewing the most effective uses of carbon nanotubes for water treatment.

This chapter aligns with Goal 6: Clean water and sanitation by reviewing the tools available for the collection of groundwater samples, methods of on-site water-quality analysis

This chapter aligns with Goal 6: Clean water and sanitation by discussing existing knowledge on different categories of biobased materials as biosorbents for wastewater treatment and giving future perspectives for the development of advanced biobased materials capable of overcoming drawbacks from the existing ones.

This chapter aligns with Goal 6: Clean water and sanitation by discussing different strateties for the treatment of wastewater using a wide range of nanomaterials.

This article supports SDG's 3, 6, and 11 by illustrating the reduction of pollutants using various microbial techniques. Strategy and recommendations are summarized, along with the future prospects.

This article supports SDGs 11, 6, and 13 by analyzing the impact of Denver Water's annual energy use and water use alongside local precipitation over a 20-year period from 1995 to 2014 and highlighting the implications for altered energy footprints as water utilities respond to new precipitation patterns in a changing climate.

This paper highlights the alarming rate of which levels of chemicals are being found in seawater.

Ultrafiltration (UF) of rainwater with chlorination can produce water for potable purposes supporting SDG 6. Long-term tests demonstrate that the produced water meets the WHO standards. PV powered rainwater ultrafiltration cost ranges from 0.04 to 0.13 US$ m3. The developed technique can be implemented with economic viability even for small buildings. The technique can be a reliable alternative to traditional water supply approaches in remote areas across the world.