The application of UVGI to disinfection has been an accepted practice since the mid 20th century.

As for drinking water quality, there are concerns about disinfection by products, lead, perchlorates and pharmaceutical substances, but generally drinking water quality in the U.S. is good.

Republika Srpska does not have a single water facilities registry, while a number of facilities do not have appropriate technical technological documentation, or have not established sanitary zones of protection for sources and disinfection.