Trihalomethanes
by-products of Chlorine Disinfection

Contaminant	Potential Health Effects	Reduction
Bromodichloromethane	Muscle, nervous system damage, cancer	99.73%
Bromoform	Muscle, nervous system damage, cancer	99.46%
Chloroform	Muscle, nervous system damage, cancer	99.50%
Dibromochloromethane	Muscle, nervous system damage, cancer	99.46%

Microbiological Organisms

Contaminant	Potential Health Effects	Reduction
Cryptosporidium	Gastro-enteric diseases	99.90%
E.Coli	Gastro-enteric diseases	99.10%
Giardia	Gastro-enteric diseases	99.99%

Inorganics
Trace Metals, Turbidity

Contaminant	Potential Health Effects	Reduction
Lead	Kidney, nervous system, highly toxic to infants & pregnant women	99.00%
Mercury	Kidney, nervous system disorders	99.25%
Aluminum	Respiratory, nervous system disorders	99.00%
Arsenic	Skin, nervous system damage	17%
Nitrates & Nitrites	Spleen hemorrhage, diuresis, death	88.43%
Cadmium	Kidney damage	85.75%
Chromium	Liver, kidney, circulatory system disorders	93.72%
Copper	Gastro-enteric diseases	98.50%
Chlorine Residual	Cancer, birth defects	94.1%
Turbidity (silt, sand, sediment)	Interferes with disinfection	85%
Total suspended solids		99.0%

Radiological

Contaminant	Potential Health Effects	Reduction
Radon 222	Cancer	99.0%

Please note that the substances listed may not be in all users' water. Complete state and EPA registered laboratory test protocols and results are available upon request.

Laboratory Test Results for Clearbrook Bacteriostatic Water Filters

Taste and Odor Reduction

% of rated service life	Cumulative gallons	Influent ppm	Effluent* ppm	% FAC* reduced
0%	0	2.0	<0.2	90+
10%	1,080	2.2	<0.2	90+
50%	5,000	2.0	<0.2	90+
80%	8,000	2.0	<0.2	90+
100%	10,000	2.0	<0.2	90+

Two water treatment units were evaluated for taste and odor reduction claims by the procedures described in National Sanitation Foundation Standards, number 42, Aesthetic Effects. Chlorine was determined by method 330.5, Methods of Chemical Analysis of Water and Waste, USEPA Environmental Monitoring and Support Laboratory, Cincinnati. The results of these tests are presented above. The concentration of free available chlorine at the effluent was radically lower than the influent at every test point. The performance of the units far exceeds the standards as specified in NSF Standards, number 42.
*Below detection limits (Gas Chromatagraph)

Volatile Organics Reduction

% of rated service life	Cumulative gallons	Influent concentration	Effluent concentration
start	0	0	<0.10 mg/l
20%	2,000	0.50 mg/l	<0.10 mg/l
40%	4,000	0.50 mg/l	<0.10 mg/l
60%	6,000	0.50 mg/l	<0.10 mg/l
80%	8,000	0.50 mg/l	<0.10 mg/l
100%	10,000	0.50 mg/l	<0.10 mg/l
120%	12,000	0.50 mg/l	<0.10 mg/l

The above test results were performed by the University of Alabama, Department of Chemistry. Influent concentrations were set at 500 ppb (parts per billion), over the suggested NSF Standard 53 level of 450 ppb, but within the +/- 20% range of chloroform.

Bacteriological Test Results

% of rated service life	Cumulative gallons	Influent bacteria (organisms per ml)	Effluent: Ordinary filter #1	Ordinary filter #2	Ordinary filter #3	Clearbrook filter #1	Clearbrook filter #2	Clearbrook filter #3
0%	0	0	15	28	10	36	6	18
10%	1,000	80l	<1	1	<1	1	<1	1
25%	2.500	120l	14	12	80	1	<1	<1
50%	5,000	800	50,000l	180,000	225,000	<1	1	<1
75%	7,500	28l	18,000	36,000	54,000	4	<1	<1
95%	9,500	480l	500,000	600,000	750,000	1	<1	<1
110%	11,000	540l	900,000l	1,200,000	1,400,000l	6l	180l	<1

The above test results were conducted on three ordinary carbon filters and three Clearbrook bacteriostatic filters identified as EPA reg. #51160-1. The test was conducted according to the following protocols: National Sanitation Foundation, Std. #42 and 53 and Federal Register, Vol. 41, #152, 8/5/76. The tests shown above were conducted in an independent EPA certified laboratory and demonstrate that the bacteriostatic units designated Clearbrook filter #1, #2, #3 are indeed bacteriostatic and dramatically reduce the level of bacteria contained within the unit.

It is a fact that municpally treated water can, by law, contain allegedly harmless bacteria. In ordinary water filters, the carbon bed containing trapped organic compound becomes a growth medium for bacteria. When ordinary carbon filters are not in use, such as overnight or vacations, a potential buildup of the bacteria trapped within the bed exists. After some time, the filter bed can contain millions of bacteria.

Clearbrook filters contain a specially formulated media that inhibits the growth or regrowth of bacteria within the filter bed. This special formula makes the Clearbrook bacteriostatic water filter a complete water treatment system that clarifies, deodorizes and filters all in one easy step.

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