Acidic Water
Aluminum
Ammonia
Arsenic
Bacteria
Barium
Benzene
Bicarbonate
Borate (Boron)
Bromine (Bromide)
Cadmium
Calcium
Carbon Dioxide
Carbon Tetrachloride
Chloride
Chlorine
Chromium
Color
Copper
Cyanide
Cyptosporidium
Fluoride
Giardia Lamblia
Hardness
Hydrogen Sulfide
Iron
Lead
Legionella
Magnesium
Manganese
Mercury
Methane
Nickel
Nitrate
Nitrite
Odor
Organics
Pesticides
pH
Potassium
Radium
Radon
Selentum
Silica
Silver
SOC's
Sodium
Strontium
Sulfate
Taste
THM's
TOC
Total Dissolved Solids
Turbidity
Uranium
Viruses
VOCs
|
|
Source
Organic matter makes up a significant part of the soil, therefore water-soluble organic compounds are present in all water supplies. Organic matter is reported on a water analysis as carbon, as it is in the TOC (total organic carbon) determination. The following is a list of organics, which regulated under the Safe Drinking Water Act of 1986.
Endrin
Trichloroethane
Lindane
Tetrachlorodibenzodioxin (dioxin)
Methoxychlor
Vydate
Toxaphene
Simazine
Polynuclear aromatic hydrocarbons (PAH)
TP
Polychlorinated bi phenyls (PCB)
Aldicarb
Atrazine
Chlordane
Phthalates
Dalapon
Acrylamide
Diquat
Dibromochloropropane (DBCP)
Endothall
Dichloropropane
Glyphosate
Pentachlorophenol
Carbofuran
Pichloram
Alachlor
Dinoseb
Epichlorohydrin
Ethylene dibromide (EDB)
TolueneDibromomethane
Adipates
Xylene Hexachlorocyclopentadiene
Organics come from three major sources: (1) the breakdown of naturally occurring organic materials, (2) domestic and commercial chemical wastes, and (3) chemical reactions that occur during water treatment processes. The first source is comprised of humic materials, microorganisms, and petroleum-based aliphatic and aromatic hydrocarbons. Organics derived from domestic and commercial chemical wastes include wastewater discharges, agricultural runoff, urban runoff, and leaching from contaminated soils. Organic contaminants formed during water treatment include disinfection by-products such as THM’s (Trihalomethanes), or undesirable components of piping assembly such as joint adhesives.
Treatment
Activated carbon is generally used to remove organics, color, and taste-and-odor causing compounds. The contact time and service flow rate dictate the size of the carbon filter. When removing organics, restrict flow rates to 2 gpm per square foot of the filter bed. Reverse osmosis will remove 98 to 99% of the organics in the water. Ultrafiltration (TJF) and nanofiltration (NF) have both been proven to remove organics. Anion exchange resin also retains organics, but periodically needs cleaning.
Related Products
AP117 - For: Whole house filtration, and Drinking Water Systems, under sink.
AP815-2 - For: Whole house filtration.
APRO5500 - For: Whole house filtration, and Drinking Water Systems, under sink.
|
