Comparing National Regulatory Processes for Safe Drinking Water

Abstract

Key TakeawaysSetting guidelines and standards helps form a framework for providing safe, reliable drinking water, a prevalent concern throughout the world.The regulatory processes of seven nations, including the United States, were compared to determine the best practices and identify areas needing improvement.An assessment consisting of eight attributes was used to examine these nations’ steps in establishing and maintaining drinking water regulations.

A Simple, Mild, and Low‐Cost Method for Preparation of Wood‐Nigrosine in Solar‐Driven Interfacial Evaporation System

“…The contents of the above four cations in the purified water by wood‐nigrosine based solar‐driven interfacial evaporation system reduced to 21, 0.17, 2.7, and 0.96 mg L −1 , which fully met the drinking water standards of the World Health Organization. [ 27 ] The cyclic stability of wood‐nigrosine, as shown in Figure 6f, demonstrated that the evaporation rate of solar‐driven interfacial evaporation system based on wood‐nigrosine remained almost constant after 48 cycles (once every 12 h). It proved that wood‐nigrosine photothermal materials had good reusability.…”