Dirty underground water remains a serious problem for
Chinese cities as a majority of monitored sites reported "bad or
extremely bad" water quality in 2011, China's Ministry of Land and
Resources (MLR) said Thursday.
Sample tests conducted in 200 cities showed that the underground
water quality of 40.3 percent of the 4,727 monitored sites was bad, and
that of another 14.7 percent was extremely bad, the MLR said in an
annual report on national land resources.
Sites with comparatively good, good or excellent underground water
quality accounted for 45 percent of the total, according to the report.
"The overall situation of the country's underground water quality allows for no optimism," the MLR said in the report.
In 2010, more than 57 percent of monitored sites reported bad or
extremely bad underground water quality, slightly higher than the
percentage in 2011.
In 2011, around two-thirds of monitored sites and cities saw the
quality of underground water stand unchanged from 2010, while the
percentages of those with deteriorating or improving water quality were
about the same, the MLR report said.
The report did not provide details concerning the causes of the
pollution of underground water, but fast economic growth and a rapidly
urbanizing society have been blamed for water pollution in China.
China's average per capita possession of water resources is only
2,100 cubic meters annually, or about 28 percent of the world average,
according to the Ministry of Water Resources (MWR).
Moreover, 40 percent of Chinese rivers were seriously polluted and
unfit for drinking after 75 billion tonnes of sewage and wastewater were
discharged in 2010, MWR data showed.
The State Council, or China's Cabinet, unveiled a guideline in
February to regulate the use of water under "the strictest criteria,"
tighten supervision over the exploitation of underground water and
further protect sources of drinking water.
The vast, yet inaccessible, underground waters in southwest Yunnan
Province represent the front lines of China's freshwater crisis. Two
openings in the earth — Shi Dong and Nan Dong caves, where the Yang Liu
River slips into and out of the shadows — mark the point where a fluvial
region, rich with surface streams, meets an unusual geologic formation
of soluble rock layers known as a karst landscape.
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