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Frequently Asked Questions
How does it differ from a filter?
A filter catches things and lets water past.
This pushes water through a membrane.
That almost nothing else can cross.
So it removes dissolved substances.
Which no strainer can touch.
Why can a filter not remove salt?
Because there is nothing to catch.
Dissolved substances are in the water.
Not suspended in it as particles.
A strainer has nothing to act on.
Only a membrane separates them.
Does it remove good things too?
Yes - it does not distinguish.
Beneficial minerals go with the rest.
Which is why the water can taste flat.
Remineralising cartridges put a little back.
Mostly a preference, not a health matter.
Why is a storage tank always fitted?
Because production is measured in days.
Litres per day, not per minute.
So it cannot supply a tap directly.
The tank fills slowly in the background.
And delivers quickly when asked.
Where does the rejected water go?
To drain, carrying the contaminants.
Which is how they leave the system.
The product-to-reject ratio varies.
Ask for it before buying.
It is a cost, not a footnote.
Does that matter on a septic system?
Considerably, and it is often missed.
Continuous reject flow to a septic tank.
Adds hydraulic load it was not sized for.
Check the discharge route.
Before the system, not after.
How much does mains pressure matter?
It drives the entire process.
Low pressure gives less water, more slowly.
And poorer rejection while doing it.
Measure the incoming pressure first.
A booster exists for exactly this.