ker ena od posledic onesnaženja voda z detergenti nastajanje pene v velikih količinah, kar zmanjšuje stik med vodo in zrakom, otežuje dovajanje kisika, povzroča neprijetnosti v plovbi, slabi fotosintezo, ki je nujna za življenje vodne flore, neugodno vpliva na različne stopnje čiščenja odplak, povzroča škodo rastlinam, ki očiščujejo odplake, in pomeni posredno mikrobiološko nevarnost zaradi možnega prenosa bakterij in virusov;
Whereas one of the pollutant effects of detergents on waters, namely the formation of foam in large quantities restricts contact between water and air, renders oxygenation difficult, causes inconvenience to navigation, impairs the photosynthesis necessary to the life of aquatic flora, exercises an unfavourable influence on the various stages of processes for the purification of waste waters, causes damage to waste water purification plants and constitutes an indirect microbiological risk due to the possible tranference of bacteria and viruses;