Every day, millions of people around the world rely on public and private water sources. Little do many know, there are many common contaminants in water, even the water that comes directly from treatment plants. Even though municipal water treatment plants remove particulates to clean the water, most of these plants add chlorination chemicals to kill bacteria and viruses. Not only are these chemicals harmful to these micro-organisms (microbes), but they are also harmful to us. Neither the chemicals, nor the dead bacteria are removed from the water before it reaches us, however.
Furthermore, treatment plants do not remove the traces of industrial chemicals and pharmaceuticals that are increasingly finding their way into our water ways, and into our bodies through our drinking water.
This is putting everyone at risk for sickness and disease. Even though it’s not mentioned in the mainstream media very often, if at all, cancer rates are at epidemic levels today, and they are increasing. Below are two charts of common chemical contaminants in water. They are increasingly finding their way into our water supplies. Fortunately, the charts also indicate the best filtration method that is most successful in eliminating the chemicals from our drinking water.
|Contaminants Removed by Carbon Filtration|
|Amyl Alcohol||Aldicarb Sulfone|
|Benzene ("fracking" carcinogen)||Atrazine (agricultural herbicide)|
|Butyl Alcohol||Benzene ("fracking" carcinogen)|
|Butyl Acetate||Benzo(a)pyrene (PAH)|
|Calcium Hypochlorite||Benzo(b)fluoranthene (PAH)|
|Chloral||Benzo(k) fluoranthene (PAH)|
|Chlorine||Butyl benzyl phthalate (PAE)|
|Chlorophenol||Carbon Tetrachloride Chlordane|
|Citric Acid||Chrysene (PAH)|
|Defoilants (plant growth inhibitors)||Dibenz(a,h) anthracene (PAH)|
|Diesel Fuel||Dibromochloropropane (DBCP)|
|Ethyl Acetate||Dichlorobenzene (para-)|
|Ethyl Acrylate||Dichloroethane (1,2-)|
|Ethyl Alcohol||Dichloroethylene (1,1-)|
|Ethyl Amine||Dichloroethylene (cis-1,2-)|
|Ethyl Chlorine||Dichloroethylene (trans-1,2-)|
|Ethyl Ether||Dichloromethane (methylene chloride)|
|Glycols ("fracking" toxins)||Diethylhexyl phthalate (PAE)|
|Iodine||Ethylene dibromide (EDB)|
|Isopropyl Acetate||Glyphosate (Round Up herbicide)|
|Methyl Acetate||Indeno (1,2,3-c,d) pyrene (PAH)|
|Methyl Ethyl Ketone||Oxamyl (vydate)|
|Nitrobenzene||Polychlorinated byphenyls (PCBS)|
|Organic Salts||Trichlorobenzne (1,2,4)|
|Oxalic Acids||Trichloroethane (1,1,1-)|
|Perchlorate (used in rocket fuels)||Trichloroethylene (1,1,2-)|
|Plastic Taste||Xylene (total)|
|Propioic Acids||2,3,7,8-TCDD (Dioxin)|
|Rubber Hose Taste|
|Taste (DI Water)|
|Taste (From Organics)|
|Contaminants Removed by Reverse Osmosis|
|Contaminant||Average Influent (incoming) Concentration (mg/L)||Average Effluent (outgoing) Concentration (mg/L)||Average Percent Reduction|
|Cysts||149357 #/ml||5 #/ml||99.99|
|Radium 226/228||25 pCi/L||5 pCi/L||80|
|Other Total Dissolved Solid (TDS) contaminants are reduced by up to 98%: Aluminum, Ammonium, Bicarbonate, Calcium, Chlorine, Chromate, Cyanide, Ferro cyanide, Iron, Magnesium, Mercury, Manganese, Nitrate, Phosphate, Silicate, Silver, Sodium, Strontium, Sulfate, Sulfite, Thiosulfate, Zinc.|
|Note: Your results may vary depending on the regularity of your maintenance, the general condition of your unit, and the contamination-level of the water supply.|
Reverse Osmosis Systems are not all the same, and don’t have the same performance level. Some only filter out a few contaminants, whereas others do a much better job at eliminating most contaminants in the water.
Even the best reverse osmosis systems won’t always filter out everything 100%. There are several factors for this, but the best way to maximize your systems performance, is to change the filters out for new ones, at recommended intervals.
This is why it’s recommend to change your water filters frequently, and definitely no later than a filters recommended service period.
Contributors to System Performance
- Contaminant level of the incoming water supply.
- Whether or not a sediment filter is used, if incoming water has large particles, such as from a well.
- Type of prefiltration (granulated-carbon, carbon-block, activated or not).
- Size of pores in the RO membrane (the smaller, the better).
- How well the system is maintained (how often the filters are changed).
Click Back to Top of Page