© 2022 Staheli West
30
Water Equipment Selection
Cost of Water
Expelled
(Blowdown)
Amount
of Water
Expelled in
Blowdown
(Reduction in
Run Time)
Initial
Equipment
Cost
Parts Per Million (PPM) of Source Water
Parts Per Million (PPM) of Feed Water
0
0
500
500
1100
1100- Blowdown open
100% of time
Reverse Osmosis
Water Softener
Reverse
Osmosis
Unit
(Required)
Reverse Osmosis
(Recommended)
0%
10%
20%
30%
40%
50%
Carry
Over
Will
Occur
Run Time Loss
Water Softener vs RO
Water
Softener
(Recommended)
RO
or
Soft
Water