has been blessed with an abundant supply of high quality water
in our aquifer system. In most areas no filtration is necessary
to meet New York State's drinking water standards, which are more
stringent than those for bottled water. Tap water costs a fraction
of what bottled water does, you can get almost 300 gallons of
water from your tap for the cost of a 50¢ pint of bottled
water. Over a $1 billion of taxpayer dollars have been spent protecting
open space to help secure the future quality and quantity of our
filters are also an option for removing unpleasant taste from
tap water. Filters also drastically reduce chlorine, lead, VOCs,
THM's, cysts, MTBE and many other drinking water contaminants.
There are many options:
pitcher filters, countertop units, in refrigerator water dispensers,
under-sink, shower filters, and whole house filters that treat
water at the point of entry to the home. For offices, bottle-less
water coolers are available the provide filtered water without
the cost of water delivery or the inconvenience of storing large
Water filter standards
are maintained by the American National Standards Institute (ANSI)
and the National Science Foundation (NSF) Water Treatment Device
Water filtering and
purification technologies include (from
the NSF web site):
- Adsorption (Carbon
(NSF/ANSI 42 & 53)
This is the physical process that occurs when liquids, gases,
dissolved or suspended matter adhere to the surface of, or in
the pores of, an adsorbent medium. Carbon filters use this technology
to filter water.
Water softening devices covered by Standard 44 use a cation
exchange resin, regenerated with sodium chloride or potassium
chloride, to reduce the amount of hardness (calcium, magnesium)
in the water. The hardness ions in the water are replaced with
sodium or potassium ions.
- Ultraviolet Treatment
This treatment style uses ultraviolet light to disinfect water
(Class A systems) or to reduce the amount of heterotrophic bacteria
present in the water (Class B systems).
- Reverse Osmosis
A process that reverses, by the application of pressure, the
flow of water in a natural process of osmosis so that water
passes from a more concentrated solution to a more dilute solution
through a semi-permeable membrane. Most reverse osmosis systems
incorporate pre- and post-filters along with the membrane itself.
These systems heat water to the boiling point and then collect
the water vapor as it condenses, leaving many of the contaminants
behind, particularly the heavy metals. Some contaminants that
convert readily into gases, such as volatile organic chemicals,
may be carried over with the water vapor.
If you have identified
a specific contaminant whose presence in your water is causing
you concern, try to locate products that have been certified to
reduce that specific contaminant. The NSF maintains a database
of water treatment products by the contaminants they have been
certified as effective at reducing.
Rember that all water
filters need regular maintenance to operate effectively. Read
the operating manual that comes with your water treatment system
to ensure you are operating your system in accordance with the
manufacturer's directions. Filters should be changed on a regular
basis as recommended by the manufacturer.