Water Filter Product Comparison
We offer the best low cost whole house water filters, chlorine shower filters, whole house bacteria filters, countertop and under-counter filtration systems using the patented KDF® media. 100 percent customer support 7 days a week--since 1998.
Compare contaminant removal methods in removing chlorine, chloramines, fluoride, Trihalomethanes (THM), lead, MTBE, arsenic, mercury, barium, cadmium, chromium and other chemicals.
Compare *our water filters to price and operating costs of those available at your local hardware store (Lowe's, Home Depot, Sam's Club - WalMart, Sears, Costco, Target etc.).
| Brand | Unit Cost | Filter Cost & Replacement Frequency | 5 Year Operating Cost |
| * Model CT KDF/GAC | $89 | $39 every 3 years | Less than $110 |
| Model CT-P | $56 | $36 every 2 years | Less than $110 |
| Amway | $213 | $80 every year | $533 |
| Brita | $35 | $7 every 2 weeks | $938 |
| Innova | $7 | $6 every 2 weeks | $800 |
| Multipure | $329 | $35 every 6 months | $644 |
| NSA 50C | $179 | $179 every 3 years | $358 |
| Pur | $50 | $10 every 3 months | $250 |
| Reverse Osmosis | $599 | $100, 2 years; $24, six months | $1,015 |
| Distiller | $350 | $8 post filter plus $0.25 per gallon electricity. | $1172 |
| Bottled Water | $0.79 | N/A | $2,960 |
COMPARISON TO OTHER TECHNOLOGIES
Contaminant Removal Comparison
| Contaminant | GAC | Carbon Block | Reverse Osmosis with Carbon | Distillation with Carbon | KDF/GAC | KDF/GAC with Ceramic | KDF/GAC with 0.5 micron Carbon Block* | KDF/GAC with Activated Alumina |
| Rust/Sediment | YES | YES | YES | YES | YES | YES | YES | YES |
| Taste/Odor | YES | YES | YES | YES | YES | YES | YES | YES |
| Chlorine | YES | YES | YES | YES | YES | YES | YES | YES |
| Chloramines | YES (3) | YES (3) | YES | YES | YES (3) | YES (3) | YES | YES (3) |
| Trihalomethanes (THM) | YES | YES | YES | YES | YES | YES | YES | YES |
| Chemicals | YES | YES | YES | YES | YES | YES | YES | YES |
| Lead - particulate |
- |
YES | YES | YES | YES | YES | YES | YES |
| Lead - dissolved |
- |
- |
YES | YES | YES | YES | YES | YES |
| Hydrogen Sulfide | - | - | YES | YES | YES | YES | YES | YES |
| Iron | - | - | YES | YES | YES | YES | YES | YES |
| Arsenic | - | - | YES | YES | YES (1) | YES (1) | YES (1) | YES (1) |
| Barium | - | - | YES | YES | YES | YES | YES | YES |
| Cadmium | - | - | YES | YES | YES | YES | YES | YES |
| Chromium | - | - | YES | YES | YES | YES | YES | YES |
| Fluoride | - | - | YES | YES | (2) | (2) | (2) | YES |
| Mercury | - | - | YES | YES | YES | YES | YES | YES |
| Nitrate | - | - | YES | YES | (2) | (2) | (2) | (2) |
| Calcium* | - | - | YES | YES | - | - | - | - |
| Magnesium* | - | - | YES | YES | - | - | - | - |
| Potassium* | - | - | YES | YES | - | - | - | - |
| Cysts | - | YES | YES | YES | - | YES | YES | - |
| Bacteria | - | - | - | YES | - | YES | YES | - |
| MTBE | YES | - | YES | YES | YES | YES | YES | YES |
* - Healthful minerals; removal not necessary.
(1) - Inorganic Arsenic
(2) - Has shown reduction, but inconsistent. For complete removal, call us for information on our fluoride and nitrate selective filters.
(3) Reduces chloramines. Requires combination: carbon block and KDG/GAC to remove more.
ADVANTAGES OF GRANULATED ACTIVATED CARBON (GAC) / CARBON BLOCK
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Removes chlorine, taste and odor, and chemicals. |
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Carbon block, if pore size is 3 micron absolute or less, can remove cysts. |
DISADVANTAGES OF GRANULATED ACTIVATED CARBON (GAC) / CARBON BLOCK
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Does not remove heavy metals (carbon block can remove un-dissolved lead) |
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Bacteria can multiply in filter (silver is often used, but is considered a toxin by the EPA and as such must be registered with them). |
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Limited life because of dual duty - chlorine and chemicals. |
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Carbon block filters can clog with sediment long before filter is exhausted. |
ADVANTAGES OF REVERSE OSMOSIS
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Removes chlorine, taste and odor, and chemicals (with carbon pre-filter or post-filter). |
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Removes heavy metals, such as lead. |
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Can remove cysts - but not recommended. |
DISADVANTAGES OF REVERSE OSMOSIS
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Slow - 2 hours to make 1 gallon of treated water. |
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Wastes water - 4 - 5 gallons of water go down the drain to treat 1 gallon. |
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Removes healthful minerals, such as calcium and magnesium. |
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Removal of these minerals leaves a flat tasting water. |
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Bacteria can foul membrane. |
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Expensive to maintain. |
ADVANTAGES OF DISTILLATION
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Removes chlorine, taste and odor, and chemicals (with carbon post-filter). |
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Removes heavy metals, such as lead. |
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Kills bacteria and cysts. |
DISADVANTAGES OF DISTILLATION
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Slow - 5 hours to make 1 gallon of treated water. |
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Wastes energy - uses 25 cents of electricity to treat one gallon. |
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Removes healthful minerals, such as calcium and magnesium. |
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Removal of these minerals leaves a flat tasting water. |
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Requires frequent cleaning of tank, frequent replacement of carbon post filter. |
KDF/GAC FILTER:
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Water on demand - no water or energy waste. |
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Removes a WIDE range of contaminants, including heavy metals. |
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Leaves healthful minerals intact, leaving tastier mineral water. |
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Low maintenance; low operating costs (about 1 cent per gallon). |
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KDF media inhibits bacteria growth throughout the unit - uses no silver. |
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5 to 10 times longer life than GAC only filter. |
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Optional ceramic pre-filter can remove bacteria and cysts. |
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KDF extends the effectiveness of the GAC in removing chlorine |
* 0.5 micron carbon block cartridge available as an option
