How much water is sent to waste in a K+Advanced Filter?

Approx 135L of water is sent to waste in a 20" Filter
Approx 240L of water is sent to waste in a 24" Filter
Approx 435L of water is sent to waste in a 30" Filter
Approx 660L of water is sent to waste in a 36" Filter

Please note; these results are based on calculations using the outer dimensions and exclude any media.