Pretreatment
Treatment applied before the main process to protect equipment or improve performance.
Reverse osmosis
A membrane process that separates water into permeate and concentrate streams.
Recovery rate
The proportion of feed water produced as treated product water.
Reject water
The concentrate or waste stream from a membrane or treatment process.
Water softening
Removal or exchange of hardness minerals such as calcium and magnesium.
Activated carbon
A porous treatment medium used for certain compounds, tastes, odours and chlorine.
Ultraviolet treatment
Use of UV light in a properly designed system to inactivate microorganisms.
Total dissolved solids
A measure of dissolved substances in water.
Point of use
Treatment serving one fixture or outlet.
Point of entry
Treatment serving water as it enters a building or system.