In most cities, surface waters are the main source of drinking water. Treatment and disinfection of this water are rather problematic: toxic effects on water organisms (En / Ru) and formation of byproducts that have negative impacts on human health.
in Kiev, already more than 260 deep artesian wells have been drilled to provide alternative drinking water; here people can fill up their daily ration; the only question is: do they always provide safe drinking water ? ...... In some cases doubts are justified.
Update: recently, most wells have officially been closed !!!
Ukrainians, living in villages are also at risk: water from shallow wells that is often enriched with nitrates and pesticides.