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Complete list of what TAPP 2 5-stage activated carbon filters remove

TAPP 2 faucet water filters with 5-stage filtering have been designed to filter 100+ substances that can be found in tap water. In this article we will specify all of them including the source of the claims. The list has been divided in 2 categories.

  1. TAPP 2 Specific testing – Covers all substances that TAPP Water has confirmed that TAPP 2 filters through our own independent lab testing
  2. Activated Carbon / Carbon Block general testing – Covers all substances filtered / adsorbed by activated carbon according to research by EPA, CDC and other publicly available research on.

The reason that we have not tested all substances ourselves is that most of them are not easily found and therefore expensive to test for. Thankfully others have already done the work for us.

TAPP 2 Specific Testing

These are substances that we have specifically tested and confirmed that TAPP 2 water filters remove/filter and to what extent.

SubstanceDescription of what is being filteredReduction
Organoleptics parameters (taste, colour and odor)The unpleasant taste or smell of water is generally caused by Chlorine, its by-products and organic contaminants.95% or more
Chlorine and ChloramineChlorine is added to disinfect tap water from harmful viruses and bacteria. Measured in free chlorine after filtering.95% or more
Chlorine by-productsTesting includes Total Trihalomethanes and Total Trichloroethylene. Clorine by-products include over 100 substances incl 32 known chlorine by-products (VOCs) such as THMs identified as potentially cancerous.95% or more
MicroplasticsTesting is based on the 1-2 micron rating of the carbon block creating a physical barrier for all known microplastics. 95% or more*
Heavy metalsOccur naturally in traces amounts in water and caused by pipelines corrosion. Testing includeslead, zinc, manganese, barium and other heavy metals.90% or more
PesticidesTesting based on total pesticides. See 14 listed pesticides including Chlordane, Heptachlor, and Lindane below.95% or more
HerbicidesTesting based on total herbicides. See 12 listed herbicides including 2,4-D and Atrazine below.95% or more
Nitrate & NitritesTesting based on nitrate and nitrate.70% or more
LimescaleReducing limescale from forming in kettles, coffee makers, sinks and glasses after filtration80% or more
TurbidityTurbidity is a measure of the degree to which the water loses its transparency due to the presence of suspended particulates.90% or more
BacteriaTesting is based on the 1-2 micron rating of the carbon block creating a physical barrier for all bacteria larger than this size including Entamoeba, Giardia, Cryptosporidium, Salmonella and Legionella .99% or more*
Total Suspended Solids (TSS)Testing of dry-weight of suspended particles, that are not dissolved after filtration.99% or more.

* Testing based on particle size and not necessarily the specific particle type / substance.

Read more details about the substances removed and independent testing.

Read about how TAPP 2 compares to other water filters.

Activated Carbon / Carbon Blocks

These are substances removed / filtered by activated carbon / carbon blocks according to peer reviewed research including government institutions such as EPA, CDC, WHO and others. Many of the substances are repeated from above.

Physical Contaminants 

This list is based on carbon blocks with a micron rating of 1-2.

ContaminantApproximate sizeReduced/Removed
Bacteria: Legionella2 to 20 μmRemoved
Bacteria: Escherichia coli (E. coli)2 microns long and about 0.5 microns in diameterHighly reduced/Removed
Bacteria: Shigella0.4 to 0.6 micrometre Diameter and 1 to 3 micrometres longHighly reduced/Removed
Bacteria: Vibrio0.5 μm diameter and 1.5 to 3.0 μm longHighly reduced/Removed
Bacteria: Salmonella2–5 microns long by 0.5–1.5 microns wideRemoved
Protozoans: Entamoeba15-16 umRemoved
Protozoans: Giardia8 to 14 umRemoved
Protozoans: Cryptosporidium4–6 μmRemoved
Microplastics1-5000umRemoved
Suspended Solids≥ 2 umRemoved
Pharmaceuticals: Includes e.g. Atenolol, Carbamazepina, Estrone, Meprobamat and Trimethoprim< 1 μmRemoved
Viruses0.02-0.4umNOT REMOVED

Chemical Contaminants

This list is based on high quality activated carbon from coconut shell in carbon block form.

Organic solvent/ Organic contaminant/AlcoholVOCPesticides & Insecticides Herbicides Other (Inorganic compounds)
Chemicals with very high probability of being adsorbed by active carbon (95% or more)
Di-n-butylphthalateBromodichloromethaneMalathion2,4-DCalcium Hypochlorite
1,2-DichlorobenzeneTetrachloroethyleneAldrinDeisopropylatrazineOzone
1,3-DichlorobenzeneDibromochloromethaneDemeton-OLinuronChlorine
2-Methyl benzenamineMCPAAlachlorChlorine dioxide
1,4-DichlorobenzeneAnthraceneDesethylatrazinePFAS
Methyl naphthaleneAzinphos-ethyl MecopropPFOS
BiphenylDieldrin AtrazinePFNA
p-chlorocresolCarbofuran Metazachlor
2-MethylbutaneParathionBentazone 
2,2-BipyridinePentachlorophenolMonuron
2,5-DichlorophenolEndosulfanBromacil
Bis(2-Ethylhexyl)PhthalateEndrin2,4-Dichlorophenoxy
3,6-DichlorophenolHexachlorobenzeneDiuron
NaphthaleneHexachlorobutadienePropazine
NitrobenzeneIsodrinSimazine
m-NitrophenolDDTTerbutryn
p-BromophenolLindaneTriclopyr
Diethyl PhthalateCyanazine
o-NitrophenolIsoproturon
Butylbenzene
2,4-Dinitrocresol
p-Nitrophenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
Chlorobenzene
4-Chloro-2-nitrotoluene
Ethylbenzene
2-Chlorophenol
Chlorotoluene
Chrysene
Hexane
1,3,5-Trimethylbenzene
m-Cresol
m-Xylene
Isooctane
o-Xylene 
Cyclohexane
p-Xylene
2,4-Xylenol
Chemicals with high probability of being adsorbed by active carbon
AnilineBromodichloromethaneChlorotoluron
Dibromo-3-chloropropane1,1,2,2-Tetrachloroethane
1-PentanolBromoform
BenzeneCarbon tetrachloride
Phenol1,1,1-Trichloroethane
Benzyl alcoholTrichloroethylene 
1,1-Dichloroethylene
Phenylalanine
Benzoic acid
cis-1,2- Dichloroethylene
o-Phthalic acid
Bis(2-chloroethyl) ether
trans-1,2- Dichloroethylene
Styrene 
1,2-Dichloropropane
Ethylene
Toluene
Hydroquinone
1-Chloropropane
4-Methyl Benzenamine
Vinyl acetate
Chemicals with moderate probability of being adsorbed by active carbon
Acetic acid ChloroethaneDimethoate Glyphosate
Methionine ChloroformImazapyr 
Acrylamide1,1-Dichloroethane
Ethyl acetate1,1,2-Trichloroethane
Methyl-tert-butyl ether1,2-Dichloroethane
Ethyl ether Vinyl chloride
Methyl ethyl ketone
Freon 11
Pyridine
Freon 113
Freon 12 
1,3-Dichloropropene
Dikegulac
Chemicals for which adsorption with active carbon is unlikely to be effective. However it may be viable in certain cases such as for low flow or concentrations
AcetoneMethylene chloride
Acetonitrile
1-Propanol
Acrylonitrile
Propionitrile
Dimethylformaldehyde
Propylene
1,4-Dioxane 
Tetrahydrofuran
Isopropyl alcohol
Urea
Methyl chloride

Source: https://www.epa.gov/remedytech/citizens-guide-activated-carbon-treatment and https://www.epa.gov/sciencematters/reducing-pfas-drinking-water-treatment-technologies

Notes/Warnings

TAPP 2 5-stage activated carbon filters are intended for public potable tap water

The cartridges must be changed every 3 months to ensure that the filter works

Filtration of substances above is based on low concentrations that are no more than 2-3x the MAL (Maximum Allowed Level) by WHO. For high concentrations of e.g. lead, mercury, nitrate or chlorine the filtration efficiency might not be sufficient.

Commercial/common  nomenclature of the chemical contaminants previously mentioned

  • Acetaldehyde
  • Gasoline
  • Acetic Acid
  • Glycol
  • Acetone
  • Herbicides
  • Activated-sludge effluent
  • Hydrogen sulfide
  • Air-purification scrubbing solutions
  • Hypochlorous acid
  • Alcohol
  • Insecticides
  • Amines
  • Iodine
  • Ammonia
  • Isopropyl acetate and alcohol
  • Amyl acetate and alcohol
  • Ketones
  • Antifreeze
  • Lactic acid
  • Benzine
  • Mercaptans
  • Biochemical Agents
  • Methyl acetate and alcohol
  • Bleach solutions
  • Methyl-ethyle-ketone
  • Butyl acetate and alcohol
  • Naphtha
  • Calcium hypochlorite
  • Nitrobenzene
  • Can and drum washing
  • Nitrotoluene
  • Chemical tank wash water
  • Odors
  • Chloral
  • Organic compounds
  • Chloramine
  • Phenol
  • Chlorine
  • Potassium permanganate
  • Chlorobenzene
  • Sodium hypochlorite
  • Chlorophenol
  • Solvents
  • Chlorophyll
  • Sulfonated oils
  • Cresol
  • Tastes (organic)
  • Dairy process wash water
  • Toluene
  • Decayed organic matter
  • Trichlorethylene
  • Defoilants
  • Trickling-filter effluent
  • Detergents
  • Turpentine
  • Dissolved oil
  • Vinegar
  • Dyes
  • Well water
  • Ethyl acetate and alcohol
  • Xylene

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