Mainland media said tap water percent of pass is only fifty percent?

Yesterday, reports of 'tap water percent of pass is only 50% of the widely circulated on the Internet. At 8:30 ended the night before last, weibo on this topic has been forwarded over 950000.

according to caixin century weekly news more than 4000 waterworks, the county level and above 98% is still using the traditional water treatment technology, which is quartz sand filter, activated carbon filter, add a sterilizer equipment, if the water is heavy metal ions and organic compound pollution, traditional filtering technology is overstretched. Scholars believe that at least 20% to 30% of the water need as soon as possible the depth of the water treatment process. Such as reverse osmosis pure water equipment or ultrafiltration equipment and membrane separation equipment

according to the survey, China's urban water supply network, generally poor quality does not conform to national standard accounted for 50 of grey cast iron pipe. 80%, average 13% cement pipe, galvanized pipe, accounting for 6%. Old pipeline leaking seriously, often tube, from quality point of view, prone to secondary pollution.

in 2000 to 2003, the water quality in the China's 184 large and medium-sized cities experienced secondary pollution event 4232. Hundreds of organic compounds and heavy metal ions into the water, can't remove. They accumulate in the body to a certain extent, possibly carcinogenic, teratogenic and mutagenic.

what is more worrying is that in addition to the city water plant, there are tens of thousands of small water supply plant of villages and towns, more backward technology, water security is more difficult to guarantee. Now, there is no comprehensive data about these small waterworks water quality.

the new water quality standard 'paper'

it is reported that the July 1 this year, China will enforce new drinking water standards. New standards in line with international standards, the index reached 106, the eu with the world's most stringent quality standards flat water quality standards.

however, the mandatory standards is an armchair strategist, because there is no substantial penalties, not for the local government and waterworks fear. Since the new standard issued, local government and water plants in the water treatment process with little progress. Some of the water treatment plant with traditional filter.

scholars call together, to set up independent of the local water plant professional water quality monitor, water plant self-checking self-test for third-party testing. Water quality testing data to public in a timely manner to the whole society. Effect a radical cure disease of tap water, the most fundamental measures is to purify the water. Effect a radical cure water water quality, it is necessary to national level system design, and the water quality of rivers and lakes governance planning docking. And urgent and practical choice, is a combination of the water plant upgrades. In addition, the tap water pipe need immediate investment.