For indoor water filter may be you can choose eSpring which with carbon/UV technology to meet NSF International Standards 42, 53, 55, 401 and Protocol P477. These various major quality standards are recognized worldwide for water quality. The eSpring Water System is certified to these 5 standards.

Standard 42 - Aesthetic effects

Tests the system’s ability to reduce drinking water contaminants that affect taste, odour and clarity
Standard 53 - Health effects

Tests systems’ ability to reduce hazardous contaminants
Standard 55 - Ultraviolet microbiological water treatment

Tests the ability of systems that use ultraviolet light to reduce bacteria and other micro-organisms in drinking water
Standard 401 - Emerging Contaminants Certification

Tests systems’ ability to remove 15 emerging contaminants from drinking water, such as drugs, herbicides, pesticides and other chemical compounds
Protocol P477 -Remove Microcystin

Tests systems for their ability to remove microcystin in water.

The eSpring Water System is also certified by NSF for reduction of more individual contaminants than any other carbon-based UV filtration system.

Independently tested, the eSpring Water System effectively reduces over 160 potential health-effect contaminants and with a UV dose of 40 mJ/cm2 is capable of destroying 99.9% of disease-causing microorganisms.

How much for those sand filter?

Why many ppl like to use perfect steel?

Here is the video from youtube that how was the sand water filter system work. External Water Filter uses five layers of different media which filter up to 10 micron to remove unwanted sediment and other particulates from your water. It filter throughout the following five layers of media: coarse, medium and fine sand, garnet and zeolite. The vessel is made of Fibreglass Reinforced Polymer (FRP) to ensure strength and durability.

Bacfree's outdoor water filters nor perfect steel also?

This is I find from youtube lasttime, you may have a look ya.

This sand external water filter with five filter media levels, the External Water Filter helps to filter unwanted sediment and dirt from incoming water, ensuring that the water dispensed from the External Water Filter is suitable for household usage.

External Water Filter has a Primary Point of Entry (POE) filter that helps remove sediment and other particulates throughout the following five layers of media: coarse, medium and fine sand, garnet and zeolite. The vessel is made of Fibreglass Reinforced Polymer (FRP) to ensure strength and durability.

- Utilises multiple media for filtration, including coarse, medium and fine sand, garnet and zeolite to effectively remove unwanted sediments.
- The Primary Point of Entry (POE) filter removes sediments and other particulates up to 10 microns for domestic or residential use
- Manual steering valve for backwash function and pressure gauge.
- Easy to use with low maintenance cost.
- 39 litre capacity.
- Ten years warranty on vessel against manufacturing defect. Two years warranty on manual steering valve and pressure gauge against manufacturing defect.


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