Umwanda usanzwe

Umwanda usanzwe ni ijambo rikoreshwa muri Amerika mu gusobanura umwanda w’amazi meza yo gutunganywa n’uruganda rutunganya imyanda . Urutonde rwibanze rw’imyanda isanzwe isobanurwa mu itegeko ry’amazi meza muri Amerika.  Urutonde rwahinduwe mu mabwiriza yatanzwe n'ikigo gishinzwe kurengera ibidukikije :

 ogisijeni ikomoka ku binyabuzima (BOD)
 fecal coliform bacteria
 amavuta n'amavuta
 pH (kurenza imipaka igenga)
 byose byahagaritswe (TSS). 

Amabwiriza y’ubuvuzi bwa kabiri akubiyemo ibipimo by’isohoka mu gihugu kuri BOD, pH na TSS, bikoreshwa ku nganda zitunganya imyanda muri Amerika 

 Amashakiro