Input lever
Water Chemistry
Detail panel
Water source
The base water used for brewing.
AeroPress Wheel Variable
Chlorine / chloramine removal
Water Chemistry · Input lever
Filtration or treatment that removes disinfectants from water.
Input lever
Water Chemistry
Detail panel
Official standard
Competition practice
Definition
This setup variable covers whether the water was filtered or treated to remove chlorine and chloramine before brewing.
Why It Matters
Water off-flavors contaminate every brew, so water cleanliness is foundational.
Preferred
- Use odor-free water with no chlorine or chloramine taste.
Page Context
Chlorine / chloramine removal is part of the Brew Supply AeroPress Wheel and helps brewers describe filtration or treatment that removes disinfectants from water.
Related variables
Input lever
Water Chemistry
Wheel face
Water recipe
A deliberate mineral recipe added to low-mineral water.
Input lever
Water Chemistry
Wheel face
Water TDS
The total dissolved solids of the brew water.
Input lever
Water Chemistry
Wheel face
Hardness
The calcium and magnesium load that drives brewing hardness.
Input lever
Water Chemistry
Wheel face
Alkalinity
The water’s buffering capacity, often driven by bicarbonate.
Input lever
Water Chemistry
Advanced detail
Calcium
A hardness ion commonly present in brewing water.
Affected outcomes
Measured metric
Cup Outcome
Wheel face
Beverage TDS
Measured total dissolved solids in the served beverage.
Calculated metric
Cup Outcome
Wheel face
Extraction Yield
Calculated percentage of coffee mass extracted.
Measured metric
Cup Outcome
Wheel face
Beverage Yield
The liquid beverage mass collected or served.
Cup outcome
Cup Outcome
Wheel face
Aroma
The smell of the brewed coffee.