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Whole House Filter (3) Big Blue 20"x4.5" - 1" NPT - PR - Well Water TreatmentTriple Whole House/Light Commercial Big Blue Water Filter System 20"x 4.5" features:This filter has (3) - 20"x 4.5" water filter cartridges that are designed for high-flow water filtration applications. Unique, wide cartridges are capable of filtering enough water for a house, apartment or office. Great for well water.

• First Filter  is a Sediment Water Filter 5 micron -  Sediment cartridge filters are primarily used to remove silt, sand or other particulate matter from water. 20" x 4.5"

• Second Filter Cartridge is a multi-stage filter that consists of KDF85-GAC  

• Water filter cartridge. 20" x 4.5"

• KDF 85 Medium Removes or reduces iron and hydrogen sulfide from water supplies. Also controls scale, bacteria and algae.

The KD85 Iron/Hydrogen Sulfide reduction filter contains a combination of KDF85 media and coconut shell activated carbon (GAC). KDF85 effectively reduces dissolved iron and hydrogen sulfide odor. Protecting your plumbing system including toilets,bath tubs,showers and appliances such as clothes washers and dishwashers from unsightly staining and odor.The GAC activated carbon removes organic contaminants to substantially improve water clarity,taste and odor. It does not add any harmful chemicals to water, making it safe for drinking water applications.

• Third Filter Cartridge is a Carbon Block filter                                                       

• Carbon Block Filter 20"x 4.5"

• Carbon Block strains out sediment, dirt, bacteria, microscopic worms, algae, asbestos and cryptosporidium. With water pressure, this compacted solid carbon block is designed to filter sub micron size particles. This micro straining of the water will provide clean and clear drinking water. 

 NoteThis system should be used where low to moderate ferrous (dissolved) iron or hydrogen sulfide contamination is known. This filter is most effective where iron and hydrogen sulfide levels are less then 5 ppm. Best removal rates are achieved where pH is between 6.5 and 8.5 and where water contains some dissolved oxygen.

 Big Blue Whole House Triple Filter System:

• 3 Big Blue Housings Heavy Duty design, easy filter cartridge changes

• Pressure release Valve

• Wall Bracket

• 1" NPT input/output (water line diameter)

• Sediment Filter


• Carbon Block Filter

• Housing Wrench

• 2 Connector 1" 

• 12 Bolts/Screws

 Assembly required.

This system comes with a first sediment filter, second cartridge GAC/KDF 85, third stage carbon block filter.


Selecting a water treatment system begins with water test results from a certified drinking water testing lab. Such test results should be compared to the water treatment product specifications to ensure that the treatment system being considered is designed to treat:

The substances you want to treat

In the concentrations at which they exist in your water.

There is no one-size-fits-all water treatment technology that addresses all water quality problems. In some cases, one treatment technology may meet all your specific needs. In other cases, you may need a “treatment train”—a series of treatment technologies in a sequence that treat one or more water quality problems. Again, when considering water treatment, use your lab test results as a guide and make sure the technology you are considering is designed to treat the problematic substances in your water.