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Backwashing a Sand Water Filter
This instructional video is designed for ARC field staff who conduct household visits to train home owners in how to backwash their newly installed sand water filters.
Flow rate of water from tap low?
Backwash water filter tank
Dirty water coming from tap?
Open side outlet.
Remove inlet filter.
Screw one end of backwash hose on inlet pipe. Connect other end of hose to tap by pushing it on.
Close ball valve
Open tap to release water to level of filter.
Open ball valve.
Turn off ball valve
Remove backwash hose from inlet pipe and tap.
Pat the sediment at the top of the tank down.
Replace inlet filter
Open ball valve
Fill water filter tank
Open tap to flush remaining dirty water for 5 minutes or until water runs clear.
Allow water to flush through hose for 20 minutes
Turn off tap.
Close side outlet
An
Ove
rvie
w
of
the
Pro
ce
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re
Meet the homeowners.
Homeowners
Explain overall process and demonstrate for homewoners
Test turbidity and flow of water
If the water is dirty, it has high
turbidity.
If the water is flowing at just a
trickle, the flow is low.
When your tank has low flow or high turbidity, you need to backwash your tank. This usually is done every 6 weeks.
Close ball valve
Ball valve
Open tap
Tap
Remove inlet filter
Inlet filter
Screw one end of hose onto tap
Tap
Hose
Push other end of hose onto inlet pipe
Inlet pipe sits just below water
surface
Open side outlet
Side outlet
Open ball valve
Ball valve
As water flows, pat down the top layer of media
Allow water to flush through hose for 20 minutes
Turn off ball valve
Ball valve
Close side outlet
Side outlet
When water stops flowing, remove backwash hose
Replace inlet filter
Inlet filter
Open ball valve
Ball valve
Allow tank to fill
Open tap to flush remaining dirty water for 5 minutes
Let’s see how well you remember all that…
Flow rate of water from tap low?
Backwash water filter tank
Dirty water coming from tap?
Open side outlet.
Remove inlet filter.
Screw one end of backwash hose on inlet pipe. Connect other end of hose to tap by pushing it on.
Close ball valve
Open tap to release water to level of filter.
Open ball valve.
Turn off ball valve
Remove backwash hose from inlet pipe and tap.
Pat the sediment at the top of the tank down.
Replace inlet filter
Open ball valve
Fill water filter tank
Open tap to flush remaining dirty water for 5 minutes or until water runs clear.
Allow water to flush through hose for 20 minutes
Turn off tap.
Close side outlet
Th
e P
roce
du
re
Congratulations – you did it!!
