Imboni izokhiqiza inani elikhulu lamanzi angcolile, amanzi angcolile aqukethe uwoyela, izinto eziqinile ezilengisiwe, izinsimbi ezisindayo, nezinye izinto eziyingozi kanye negwebu, ukukhishwa okuqondile kuzongcolisa imvelo ezungezile. I-Environmental Monitoring Bureau inezidingo eziphezulu zokwelashwa kwendle kanye nokuhlolwa okuqinile. Inqubo yokwelashwa kwamanzi angcolile iyinkimbinkimbi, futhi kulula ukubhekana nezinkinga zegwebu enkambisweni yokwelashwa.

Ukwelashwa kwendle ngokwezinga lokwahlukaniswa, kuhlukaniswe ukwelashwa kwamanzi okukodwa, okubili, okuthathu. Kodwa-ke, ngenxa yenqubo yokwelashwa kanye nekhwalithi yendle, inqubo yokwelashwa kwendle kulula ukuyiphuphuza, okuyisidingo sokusebenzisa i-defoamer yokwelashwa kwendle ukuze kuhlanzwe.

Ukwelashwa kwendle kungaba yi-foam ebangelwa izingxenye zekhwalithi yamanzi, noma i-foam ebangelwa inqubo yokwelashwa. Ukwelashwa okungafanele ngesikhathi kuzoba nomthelela omubi ohlelweni lokwelashwa, kuthinte ukukhishwa kwekhwalithi yamanzi. Ukuze kuxazululwe inkinga ye-foam emanzini angcolile, ukufaka i-defoamer kuyindlela enhle.
Ngokwezici zobuchwepheshe bokwelapha indle kanye nekhwalithi yamanzi, i-defoamer yokwelapha indle ethuthukisiwe iyifomula ehlanganisiwe ye-defoamer eyakhiwe nge-polyether ne-silicone. I-defoamer yathuthukiswa onjiniyela be-defoamer abangochwepheshe, inokufaneleka okuhle, futhi ingaxazulula izinkinga ezahlukahlukene ze-foam ekuphatheni indle. Le defoamer yenziwe ngezinto zokusetshenziswa ezisezingeni eliphezulu, ukuhlushwa kwefomula kuphakeme kakhulu, futhi ingangezwa ngqo enkambisweni yokwelapha indle. Kudingeka inani elincane kuphela ukuze kufezwe umphumela omuhle wokuhlanza indle. Ngokwezinhlelo ezahlukene zokuhlanza indle kanye nenani le-foam, inani liyangezwa njengoba kufanele; Uma usebenzisa, sebenzisa ukuxutshwa kwamanzi okuphindwe ka-1 kuya ku-5 ukuze wengeze noma ungeze ngokuqondile ngokulinganayo (kulula ukukuhlela ngemva kokuhlanza, udinga ukuyisebenzisa ngokushesha okukhulu), ungaxhumana nomenzi ukuze uthole ukusetshenziswa okuthile.