Black Desert Wiki
Black Desert Wiki

Filtering is a Processing method used for purifying water and refining feathers.

Filtering: Beginner[]

For more advanced filtering, you need to learn the knowledge Filtering: Beginner from Dora Fonti in Heidel City by completing her quest Filtering Feathers. The quest unlocks when you get access to the quest Learning Higher Processing Skills, which can be obtained in two ways: Have Gathering Apprentice 4 and get the quest directly from Ficy in Heidel City, or complete the questline started by the Black Spirit as you enter Heidel City.
The Black Spirit will ask you to go to Jemkas Wyrmbane, who will have the quest Because I Like You, which requires you to either have Gathering Beginner 7 or have completed the quest Go to the Northern Heidel Quarry.
Complete the rest of the questline to get access to Learning Higher Processing Skills and Dora Fonti's quest:

Filtering: Skilled[]

To obtain Filtering: Skilled you will need to have completed all prior Skilled Processing questlines. After obtaining Grinding: Skilled, Geranoa will send you to Matheo Oberen in Oberen Farm, to the south of Calpheon City, to learn more about filtering. There you'll need to do these quests:

  • Troubled Oberen Farm
  • Gotta Pluck Them All
  • Usable Feathers
  • Need More Feathers
  • Hunting to Extinction


Product Ingredient #1 Skill Required
Fine Fancy Feather icon Fine Fancy Feather Fancy Feather icon 10x Fancy Feather Processing Beginner 1[1]
Fine Lightweight Plume icon Fine Lightweight Plume Lightweight Plume icon 10x Lightweight Plume Processing Beginner 1[2]
Fancy Feather icon Fancy Feather Flamingo Plume icon 5x Flamingo Plume
or Griffon Feather icon 5x Griffon Feather
Processing Beginner 1[3]
Lightweight Plume icon Lightweight Plume Soft Kuku Bird Plume icon 5x Soft Kuku Bird Plume
or Soft Ferri Feather icon 5x Soft Ferri Feather
Processing Beginner 1[4]
Purified Water icon Purified Water Bottle of River Water icon 1x Bottle of River Water
or Bottle of Turbid Water icon 1x Bottle of Turbid Water
or Bottle of Clean Water icon 1x Bottle of Clean Water
or Bag of Muddy Water icon 5x Bag of Muddy Water
or Cactus Sap icon 5x Cactus Sap
Processing Beginner 1[5]