water reaches your tap. Typically, the residual concentrations of chlorine in household water range
from 0.5 to 1.0 parts-per-million (ppm).
Besides being toxic, chlorine will degrade the TFC reverse osmosis membrane. Therefore, it is es-
sential to remove chlorine from your tap water before it reaches the RO membrane. Your BEV system
includes a pre-filter containing a carefully chosen grade of granular activated carbon (GAC) which will
very effectively remove chlorine from your tap water. It is important to replace the pre-filter annually to
insure no chlorine is reaching the membrane.
Sediment
In areas with very high sediment concentrations the pre-filter may clog prematurely. If the pre-filter
becomes clogged, you will likely notice a decrease in the production rate from your system. In areas
with very high sediment concentrations, it may be necessary to replace the pre-filter on a semi-annual
basis.
Over the course of one year, the sediment filter will typically become significantly discolored. This is
not cause for alarm. If you notice pressure at the gauge has dropped significantly below your initial
observations, consider changing this filter to restore adequate pressure and improve overall system
performance.
iron
Iron concentrations greater than 1 mg/l can degrade overall system performance. Manganese is often
found with high iron concentrations. If your water supply has iron (or combined iron/manganese) con-
centrations above 3 mg/l, pretreatment is required. (Most RO systems can only tolerate .1 mg/l of iron
before needing pre-treatment.)
Getting to Know Your BEV System 15
