Survey finds poor groundwater quality
Print Edition
MORE than 60 percent of groundwater sites were rated as of poor quality last year, Nanfang Weekly reported recently, citing research by the Ministry of Land and Resource.
The ministry mainly tested deep aquifers, often about 1,000 meters deep, were used as drinking water resources, the report said. It found that of the 5,118 spots tested in 202 cities, 42.5 percent had “relatively poor” underground water, while almost 19 percent had “very poor” water quality.
The main pollutants were manganese, fluoride and sulfate, while potentially deadly heavy metals like arsenic, chromium and lead were also detected.
The quality of water is getting worse, the report said. The proportion of “poor quality” sites was 55 percent in 2011, 57 percent in 2012, 60 percent in 2013 and 61.5 percent in 2014. The figure was unchanged from 2014 to 2015.
The pollution was worse in water drawn from shallow wells, of up to 60 meters deep, the report said, adding that the water in more than 80 percent of the 2,103 sites tested was unsafe to drink.
Of the samples, 33 percent were suitable only for industrial and agricultural use, while 47 percent were unfit for any kind of use by humans.
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