Isikhwama samanzi esiguquguqukayo senziwe ngelaphu eliguquguqukayo le-PVC, linomsebenzi obalaseleyo wokungangeni manzi, kwaye lisetyenziswa kakhulu kumashishini amaninzi okugcina amanzi okanye ezinye izinto ezingamanzi, njengokuqokelela amanzi emvula, ukugcina amanzi okusela, ukulayisha ingxowa yamanzi yokuvavanya ibhulorho, iqonga, kunye nomzila kaloliwe, njalo njalo.
