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20,000 gallons of city water,
spiked with high levels of specific
contaminants, was run through a KDF/GAC
cartidge. The efficiency shown below
was measured AFTER 20,000 gallons
had passed through the cartridge
(when new, removal is 99+%). Most
other non-standard tests show
results after only one pass of
contaminated water, which does not
indicate how the filter will perform
towards the end of its life. To pass
the NSF-53 protocol, the effluent
must be under the EPA Maximum
Contaminant Level (MCL) throughout
the test.
All concentrations are measured
in milligrams per liter (mg/l).
Test Results at 20,000
Gallons
| Chemical |
Influent |
Effluent |
Efficiency |
EPA MCL |
| THM (chloroform) |
0.57 |
0.029 |
95% |
0.1 |
| Lead |
0.19 |
0.006 |
97% |
0.025 |
| Fluoride (1) |
8.26 |
0.78 |
91% |
1.4 |
| Nitrate (1) |
30.7 |
8.03 |
74% |
10.0 |
| Barium |
10.4 |
0.56 |
95% |
1.0 |
| Arsenic |
0.37 |
0.007 |
98% |
0.05 |
| Cadmium |
0.03 |
0.004 |
87% |
0.01 |
| Chromium VI |
0.15 |
0.011 |
93% |
0.05 |
| Chromium III |
0.163 |
0.003 |
98% |
0.05 |
| Selenium |
0.1 |
0.006 |
94% |
0.01 |
| Mercury |
0.006 |
0.000* |
99+% |
0.002 |
| Endrin |
0.0008 |
0.000* |
99%+ |
0.0002 |
| Lindane |
0.011 |
0.0012 |
89% |
0.004 |
| Methoxychlor |
0.32 |
0.0059 |
98% |
0.1 |
| Toxaphene |
0.013 |
0.000* |
99%+ |
0.005 |
| 2,4-D |
0.3 |
0.02 |
93% |
0.1 |
| Silvex (2,4,5-TP) |
0.029 |
0.004 |
86% |
0.01 |
* - Below detectable limit.
(1) - While this test shows a
reduction in these contaminants, KDF
is inconsistent in their removal in
certain water conditions. We offer
special nitrate and fluoride
filters, or reverse osmosis, if
removal is needed.
A separate test was run on
another KDF/GAC cartridge to
determine chlorine removal capacity.
The challenge solution contained 3
mg/l chlorine (most cities use less
than 1 mg/l). 2 mg/l lead was also
added. At 20,000 gallons, both were
being removed 99.9+%. The test was
terminated at 28,400 gallons when
the chlorine removal rate hit 90%.
The lead removal was still 97.6%.
Notice:
consumer is responsible for
following any state and/or local
regulations and plumbing codes
pertinent to the purchase,
installation and operation of our
products.
California Residents: the state of
California requires water treatment
devices claiming health claims be
tested and certified by them - our
units are not. Therefore, only
aesthetic claims can be made on units
shipping to California addresses.
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