An interesting review report on “A critical review of the application of electromagnetic fields for scaling control in water systems: mechanisms, characterization, and operation” was reported by Lu Lin, Wenbin Jiang, Xuesong Xu and Pei Xu published in Nature Partner Journals Clean Water published on June 2020 [1] .   Water is the precious matter in the world. source U.S. General Services Administration has interested on non-chemical water treatment technologies. It has mentioned following important points: n on-chemical technology promises to increase the period between required blow-down cycles, thus reducing water consumption , minimizes associated issues of chemical storage, handling, and disposal, and may permit on-site re-use of cooling-tower “blow-down” water as “grey water” , it promises to be life cycle cost effective based solely on the reduction in chemical costs , this technology may reduce or eliminate chemical costs, it may not reduce other contractor costs ...

Recently, G. D. Bhowmick et al., have a review reported the current scenario on the possibility of faecal–oral transmission of COVID-19 and related water contamination along with the precautionary measures that need to be taken by the government as well as by the individuals with an eye on knowledge-based scientific resolution to confront the COVID-19 outbreak [1] . The researchers have discussed the major routes of SARS-CoV-2 transmission involve respiratory droplets and direct contact, the infection through faecal matter is also possible. Conventional sewage treatment methods with disinfection are expected to eradicate SARS-CoV-2. However, for densely populated countries with lower sewage treatment facilities, chances of contamination are extremely high; as SARS-CoVs can survive up to several days in untreated sewage; even for a much longer period in low-temperature regions. A round 1.8 billion people worldwide using faecal-contaminated source as drinking water, the ris...