Main Water Supply Filters – Whole House Protection
With a main water supply filter, filtration happens before water reaches any tap, shower or appliance, so every point in the house receives already filtered water.
Why Choose a Main Water Supply Filter
By installing main water supply filters, you get:
- Whole house protection for your entire plumbing system
- Protection for all appliances (washing machine, boiler, toilets, taps, showers)
- Reduced sediments, rust and particles before they enter the network
- Extended lifespan for boilers and piping
- Less scale on showers and faucets – better bathing experience
- Improved hygiene and water quality for everyday use (cooking, washing, cleaning)
Types of Main Line Filters
- Sediment filters (PP / mesh) for sand, mud & rust
- 10" & 20" high-flow housings for whole house filtration
- Activated carbon filters for chemicals, chlorine and odours
- Filters for borehole water and high turbidity
How to Choose the Right Filter
When choosing a main line water filter, consider:
- The quality and turbidity of the water in your area or borehole
- Whether you have old plumbing or sensitive installations
- The required flow rate (litres/hour) and water pressure
- Whether you need a sediment-only filter or a sediment + carbon solution
- If you are looking for a full whole house water filter setup
Frequently Asked Questions about Main Water Supply Filters
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+ Where is a main line filter installed?
A main water supply filter is installed at the main water inlet, before all taps, showers and appliances, so that the entire plumbing system is protected and all water entering the house is filtered.
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+ Is a main water supply filter suitable for borehole water?
Yes, especially 20" high-flow housings or multi-stage sediment filters are suitable for borehole water with a high sediment load and turbidity. They can also be combined with activated carbon stages for even better overall filtration.
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+ How often do filter cartridges need replacement?
In most cases, main line filter cartridges are replaced every 6–12 months, depending on water quality, consumption and the type of filter (PP, mesh, activated carbon). For heavy sediment or borehole water, replacements may need to be more frequent.
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+ Can I install a second filtration stage in series?
Yes, it is very common to install two stages in series: a sediment filter (PP) in the first stage and an activated carbon filter in the second. This gives you improved whole house filtration for both particles and chemical substances.
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+ Does a main water supply filter reduce water pressure?
Not significantly, as long as you choose a 10" or 20" high-flow housing and replace the cartridges at the recommended intervals. If a filter is heavily clogged or undersized for the flow of the house, you may notice a pressure drop, which is a sign that the cartridge needs replacement or the system needs a larger size.
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+ Do I need a professional plumber for installation?
It is strongly recommended to use a qualified plumber so that the main water supply filter is properly installed and sealed according to your plumbing layout. This ensures correct operation and helps prevent leaks or pressure issues.
OASIS Certifications
- CE – European safety compliance.
- RoHS – Free from hazardous substances in electrical and electronic parts.
- CB – International electrical safety certification for professional use.
OASIS | Water Coolers & Filters, quality you deserve!
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