I le vaega o le Longyan Sewage Treatment Plant i Nanchuan, Chongqing, o mea faigaluega suʻesuʻeina lelei o le vai a Sinomeasure: mita pH, okesene faʻamavae, mita turbidity, mita faʻaogaina o le palapala ma isi meafaifaʻaili ua faʻaaogaina lelei i le faʻagasologa o togafitiga, lea e faʻaleleia atili ai le saʻo o le. su'esu'ega lelei o le vai ma fa'amautinoa le maualuga o le lelei ma le mautu o le fa'aogaina o otaota.
