The central television station "early life reference" show on December 30, 2011 broadcast the CCTV sings: rural residents hidden trouble water ", the following is a factual record shows:
Located in the beautiful scenery of the Obama county in guangxi is the world famous longevity of the township, the 240000 people in some 81 mouth years old, it is said that Obama's longevity paper napkins is the main reason, spring water here, that Obama has also been proud people. But, in 2008, the white horse village but Obama county installed for the first a water pipe, and after that, tap water pipe laying the work in other towns begin. Obama what people give up their hit the already a long time of drinking water way and change drink water, paper tissue Obama's water, what's the problem?
In early December of this year, the central television station "early life reference" reporter came to longevity township of guangxi Obama county, special explore they had the survival of mountain spring water Wells. Reporter discovery, the local Wells are still flowing out of clear the sweet spring water, since this Wells throughout your generations by local people drinking, so why do they want to give up the traditional way of drinking water and modified tap water?
Originally, along with the social development, the Obama people began to give up the traditional way of tapping a stick of laundry, washing powder in the local has a large commonly used. But, this kind of chemicals in brings convenient while, is also in unconsciously polluting the we were clean water, it takes a long YangZhiRong as this was deeply worried.
White horse village long: I was worried about washing powder and pesticide the toxic substances will permeate underground, endanger the health of the villagers.
Reporters also know that, in shandong province of zouping county in the west dong town, and although Obama thousands of miles apart, but there is also the same.
West LiCun villagers Yang dong town: our family is drinking throughout your generations (well water), now the government not to use, that there is pollution.
West dong town party secretary zhang: pesticide, fertilizer, powder, surface water pollution.
The reporter of the collection will be well water samples back to the studio mountain spring, through the naked eye observation, can't see well water any different, the host sip also didn't feel anything abnormal flavor. This product is clear, and the sense of taste sweet spring water really have a problem? This kind of direct drinking habit of well water from generation to generation, now there are many areas kept this way of life, don't washing powder, such as pesticide these substances really can have so big penetration pollute the water?
Reporters in the town of west dong water get zouping by the centers for disease control lab for testing, test the sulfate and the nitrate nitrogen content. Test results made the host and guests of surprise, sulphate content to 276 mg/L, higher than the "new gb" 250 mg/L of standard, and nitrate nitrogen content 25.1 mg/L far more than in the new national standard "20 mg/L standards.
The two substances to human body exceeds bid exactly what effects? Huazhong university of science and technology, school of public health professor WuZhiGang toxicology give the answer. Sulfuric acid and many metal can produce chemical reaction, so will form a variety of sulfate, in a small amount on most of the intake sulfate secondary physiology reaction is diarrhea, dehydration and gastrointestinal disorder. People often think of magnesium sulfate content beyond 600 mg/L of water used for conducting a cathartic. When the water mass concentration of calcium and magnesium sulfate discern to 1000 mg/L and 850 mg/L, will send out a bad smell.
And if excess intake of high nitrate nitrogen of water or food, it can cause gastrointestinal cancer or liver cancer. Nitrate into the human body will change after part for nitrite, especially was born three months after the baby, can be in in the digestive tract will convert nitrite nitrate completely, so for three months of nitrate baby bigger harm. But high manganese exposure may cause harm to the brain, make some brain cortex necrosis, to people's intelligence development even brain nerve activity to produce harm.