Millions of Americans ingest them for years: perchlorate, Hexavalent Chromium, and volatile organic compounds — not because they are harmless, but because they — among 6,000 toxins that Agency for the U.S. Environmental Protection (EPA) has not yet found time to settle in municipal drinking water.
But after a change in government and scathing review of the financial management of the Central United States (General Accounting Office) EPA began to develop regulations to remove these chemicals from tap and bottled water. And the industry is beginning to make the effort to delay or prevent their use.
At that time, as the government struggles with the industry about the regulations, Forbes offers readers a "prime suspects" and the best way to get rid of them without the help of the government.
Perchlorate (salt of perchloric acid)
Earlier this year the EPA canceled the Bush administration's decision not to regulate perchlorate, to engage them in the first place in a new effort to tighten the requirements for drinking water.
An important ingredient in rocket fuel, fireworks and explosives, perchlorate can disrupt the production of thyroid hormones necessary for prenatal and postnatal development and metabolism in the body — say the EPA and NSF USA (NSF).
"Monitoring data show that more than 4 percent of public vodobsnabzheniya a detectable perchlorate and between 5 and 17 million people could be supplied drinking water containing perchlorate," — said the EPA.
Perchlorate can be removed from drinking water by reverse osmosis.
"According to the requirements of the Rules of reverse osmosis plant should be able to reduce the 130 ppb (parts per billion) perchlorate to 4 ppb or less in the treated water," — says NSF.
Connection example chromium-6 — trioxide limps imeesya EPA standard for the total content of chromium in drinking water, but not all forms of chromium compounds have similar effects, and the standard for total chromium may allow hazardous quantities of toxic chromium in the water supply.
Hexavalent chromium, or chromium-6 in drinking water, according to the Agency for Toxic Substances and Disease U.S., leads to gastric cancer in humans and animals. Workers exposed to chromium by inhaling it, ill with lung cancer. It is also associated with dysfunction of the liver, kidneys, circulatory and reproductive function.
Hexavalent chromium is formed by electrodeposition of metal, paint and in the manufacture of steel. Steel mills in Indiana dumped chromium into Lake Michigan, which provides drinking water to 7.6 million people in the Chicago area.
Earlier this year, EPA recommended that the municipal water organizations to strengthen the monitoring of hexavalent chromium.
Last week, the city of Chicago has published the results of analyzes, in which the levels of hexavalent chlorine to ten times the recently adopted in California hygienic standards. The ratio of California — 2 ppb — based on the level of risk in one additional case of cancer per million people.
As stated by the California office to assess the threat to human health, "For every million people who drink tap water with this level of chromium-6 daily for 70 years, there is a probability of one additional case of cancer from exposure to the chemical."
As perchlorate, Hexavalent chromium can be removed from water by reverse osmosis. According to the NSF, from it you can also get rid of by distillation and certain types of water filters.
Carcinogenic volatile organic compounds (VOCs)
EPA attempts to regulate more toxic substances in drinking vodeEPA proposed to optimize the regulation of additional toxic substances by normalizing chemical groups rather than individual compounds. The first group in its crosshairs — a set of 16 volatile organic compounds known that cause cancer.
EPA already regulates eight VOCs, including the widely used industrial solvents and petroleum products as carcinogens. Revising its standards for some of them, EPA intends to include eight more are still not regulated.
"The agency is considering eight currently regulated compounds (benzene, carbon tetrachloride, 1,2 — dichloroethane, 1,2-dichloropropane, methylene chloride, perchlorethylene, trichlorethylene, and vinyl chloride) and eight non-regulated compounds (aniline, benzyl chloride, 1,3-butadiene , 1,1-dichloroethane, nitrobenzene, epoxypropane, 1,2,3-trihlorgidrin and urethane). All of these VOCs are known to cause cancer, or suspected of it. "
EPA expects that management efforts, which began this year, will take two years or more before it will be a new standard. An attempt will certainly cause controversy, as many volatile organic compounds used in hydraulic fracturing, a process that is behind the current boom in natural gas production in the country.
Meanwhile, reverse osmosis does not help rid your water of volatile organic compounds. But, as the NSF, this can be done through the filtering layer of activated charcoal.
Meanwhile NSF just talking, it's time to take matters into their own hands and begin to produce and sell water filters, as well as to organize the delivery of clean water to the house. So it's time active Americans to rent rooms, ordering equipment, and plastic cards. They have a chance to make money on saving the health of their fellow citizens.