Water. 2012. Bottled vs. Tap. You taste activity Cost/Benefit analysis Spring vs. Tap vs. Purified Cost Tap = 1 cent per gallon, purified/spring water best price = 83 cents per gallon but runs up to 5 dollars per gallon
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For thousands of years it was a complete mystery why people generally became sick when they congregated together in large groups for any stretch of time. The simplest answer to this is that they became sick in their own waste as nature could not break down the immense concentration of waste in a suitable time to not allow massive contact by humans.
There are three main parts to waste water treatment:
Primary: Physical Filtration (up to 60% clean)
Secondary: Biological (microlife cleans up to 90% clean)
Tertiary: Chemical Filtration (up to 99% clean) but most civic water treatment systems only use primary and secondary treatment before adding a dose of chlorine and releasing the treated water back into the streamway.