The cheapest shower filter on Google Products at this moment is a single, $10 filter – as advertised, it snatches up sulfur and chlorine in the water, keeping these chemicals from damaging skin and hair. Meanwhile, the most costly captures chlorine, organic carbon compounds, and volatile organic compounds – for $379.90.
Something of a gap, there. But, specifically, what does this all mean? Do they mean anything real, or do they just act as a lure for customers? Or is there a real meaning to them?
TOCs (Total Organic Carbon)
Simply, Total Organic Carbon is used as a general indicator of water quality. It is the total count of carbon in the sample that is not in an inorganic compound. So, if your TOC count is high, it’s possible that there are detergents, herbicides, or pieces of decaying plant matter in your water. Normally municipal water systems are supposed to use chemicals to remove the decaying plant matter and treat the water, but some amount does get through.
VOCs
Benzene or trichloroethylene in the drinking supply make up the metric known as VOCs or Volatile Organic Compounds. Trichloroethylene, for instance, is used to clean septic tanks – an accidental spill or an inattentive worker might have let it into the water system. Benzene entering the water system might be due to gasoline or oil leaks. However, these occurrences are generally unique to old industrial and agricultural regions that use powerful chemicals, but water tests might be wise.
Chlorinated Water
The classic water treatment This is usually used to treat and disinfect water at treatment plants, and to make it suitable for drinking down the line. Chances are you’ve gone for a dip in a swimming pool at one point, and if so, you’ve probably gotten a bit of mild discomfort or frayed hair if you stayed in too long: that’s the power of chlorine, the most effective basic water disinfectant. Fortunately, even the cheapest charcoal shower filters will get rid of chlorine traces in the water.
Usually, municipal water sources filter TOCs and VOCs very well – paying $400 to remove harmless trace amounts borders on wasteful. But even if chlorine was your main worry, the size of it in the public supply isn’t enough to truly harm you – only frustrate you if you take special care of your hair. However, if you do feel that a filter is absolutely required and you just can’t shake your worries, a cheap $60 filter will do a number on those, as well as restore pH balance and remove heavy metals.
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