Stage 17: Aesthetics

Removes/Reduces: Some Undesirable Tastes, Colors, and Odors

Stage 18 & 19: THMs & Small Organics

Removes/Reduces: Some Disinfection Byproducts, Chlorinated Solvents, Industrial Pollutants

Stage 20: Agricultural Pollutants

Removes/Reduces: Some Herbicides, Pesticides, Insecticides, Fungicides, Algaecides

How it works.



Water flows to the bottom of the cartridge through central tubing. Pressure then forces the water upwards through a diffusion mesh, which helps evenly distribute the water across the filter media. The water then passes through the filter media before exiting through the containment mesh and moving on to the next phase. Click on the spots dotting the image to identify the different parts of the filter and what they do. 

Chemical Reduction

As opposed to the mechanical reduction of the REMOVE phase, the RESET phase uses chemical reduction to remove contaminants on a molecular level. Through the process of adsorptiongranular activated carbon (GAC) uses its oleophilic (oil attracting) properties to pull non-polar contaminants out of the water, including most organic compounds. The combined surface area of just one GAC cartridge exceeds 250,000 square feet; that’s over 18 olympic-size swimming pools of chemical reduction taking place in a single cartridge.

This process effectively reduces common disinfection byproducts, trihalomethanes (THMs), organic contaminants like chlorinated solvents, pesticides, and other industrial pollutants.

Catalytic Reduction

Chlorine is catalytically reduced from an oxidizer (NaOCl) to a harmless salt (NaCl) by stripping away the reactive oxygen.

Contaminant reduction data.

*Data provided by the U.S. Environmental Protection Agency, “Drinking Water Treatability Database“.

Name CAS Number Synonyms
Contaminant Type
1,4-Dioxane 123-91-1 diethylene dioxide, diethylene ether, dioxane, glycol ethylene ether, p-dioxane Chemical
17a-Ethynyl Estradiol 57-63-6 EE2 Chemical
Acetochlor 34256-82-1 Acenit, Harness, Surpass, Top Hand, Trophy Chemical
acetochlor ethanesulfonic acid (ESA), acetochlor oxanilic acid (OXA), acetochlor sulfinylacetic acid Chemical
Alachlor 15972-60-8 Alanex, Alochlor, Lasso, Lazo, Metachlor, Pillarzo Chemical
Calicivirus Microbial
Diuron 330-54-1 Crisuron, Diater, Direx, Karmex, N-(3,4-dichlorophenyl)-N,N-dimethyl urea, Unidron Chemical
Fluoride 7664-39-3 fluorhydric acid, fluoric acid, hydrofluoric acid, hydrofluoride Chemical
Ibuprofen 15687-27-1 Advil, Brufen, Hydratropic acid, Ibufen, Motrin Chemical
Metolachlor 51218-45-2 Bicep, Codal, Dual, Milocep Chemical
Metolachlor ESA, Metolachlor OA, Metolachlor ethane sulfonic acid, Metolachlor oxanilic acid Chemical
Microcystins Microcystin-LR Chemical
Molinate 212-67-1 Hydram, Ordram, Yalan Chemical
AOC, BDOC, DOC, DOM, NOM, SUVA, TOC, assimilable organic carbon, biodegradable dissolved organic carbon, dissolved organic carbon, dissolved organic matter, fulvic acid, humic acid, specific ultraviolet absorbance, total organic carbon Chemical
2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propanoate (FRD-902), 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propanoic acid (FRD-903), GenX, Heptadecafluorononanoic acid, Heptafluorobutyric acid, Nonadecafluorocapric acid, Nonadecafluorodecanoic acid, Pefluorobutane sulfonate, Perfluorobutanoic acid (PFBA), Perfluorobutyl sulfonate (PFBS), Perfluorobutyric acid, Perfluorocapric acid, Perfluorodecanoic acid (PFDA), Perfluorohexanesulfonic acid potassium salt, Perfluorohexyl sulfonate (PFHxS), Perfluorononanoic acid (PFNA), Potassium tridecafluoro-1-hexanesulfonate, Tridecafluorohexane-1-sulfonic acid potassium salt, heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether (E1) Chemical
Perfluorooctane Sulfonate 1763-23-1 (PFOS acid) 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro, 1-Octanesulfonic acid, heptadecafluoro-, 1-Perfluorooctanesulfonic acid, Hepatadecafluoro-1-octanesulfonic acid, Perfluoro-n-octanesulfonic acid, Perfluorooctane Sulfonate, Perfluorooctane Sulphonate, Perfluorooctanesulfonic acid, Perfluorooctyl Sulfonate, Perfluorooctylsulfonic acid Chemical
Perfluorooctanoic Acid 335-67-1 C8, PFOA, perfluorooctanoate Chemical
Saxitoxin Microbial
Simazine and Simazine Degradates 122-34-9 Aquazine, Framed, Gesatop, Premazine, Primatol, Princep, Simadex Chemical
Strontium 7440-24-6 Sr-89, Sr-90, strontium carbonate, strontium chloride Radiological