China: Water safety a major concern, groundwater polluted

Groundwater pollution is a growing problem, not only in China but in other parts of the world too, including South Africa.  In some cases, the only truly safe, unpolluted water can be obtained from rainwater harvesting and rain water tanks.  Many homes and businesses in South Africa obtain part or all of their water from boreholes, assuming it is safe – it would be wise to have the water tested, especially in urban areas.  Rain water tanks allow one to know the exact origin of the water and are a sensible addition to a property.

ground water pollutionThe issue of polluted groundwater in China has once again bubbled to the surface. Such rising concern follows in the wake of a report claiming that only 22 percent of underground water in the densely populated North China Plain qualifies as drinking water.

In February, claims washed over social media sites that tainted water from paper mills and chemical works in Weifang, Shandong province, was being pumped underground, thus polluting groundwater sources.

However, experts and officials said the problem can only be solved by greater investment in monitoring systems, stricter laws and an upgrading of outdated quality standards that have not been amended for more than 20 years.

Many experts pinpointed a lack of monitoring sites and their inadequate facilities as one of the key factors hindering the government’s efforts to tackle groundwater pollution.

“Out of fewer than 25,000 monitoring sites managed by all levels of the water resources departments, only about 10 percent are equipped with facilities to test water quality, while the rest can only monitor water quantity,” said Chen Ming, head of the water resources department at the Ministry of Water Resources.

Only about 40 percent of China’s groundwater qualifies as a source for drinking water, according to the Environmental Protection Ministry’s 2012 Environmental Conditions Report, published on June 4, which examined 5,000 pockets of groundwater in 198 cities.

The number of qualified sources was much lower on the plains, and fell to around one-fifth on the North China Plain, which includes the provinces of Henan, Shanxi, Hebei and Shandong, plus the municipalities of Beijing and Tianjin.

“It’s not that the government has ignored pollution in the past,” said Chen. “The reason for the sharp contrast is that pollution has only emerged as a problem in the past 30 years, as a result of the country’s rapid development.”

He said recharge – polluted surface water that sinks into the ground – is a major cause of groundwater pollution, because most of the exploitable groundwater is connected to surface water.

The major sources of pollution include urban domestic refuse, leaks from industrial pipelines, the illegal discharge of sewage, and the widespread use of pesticides and fertilizers.

The discharge of untreated industrial sewage nationwide reached almost 16 billion metric tons in 2009, but wasn’t included in the official data, according to research conducted by Ma Zhong, head of the School of Environment and Natural Resources at Renmin University of China.

Ma suspects that at least part of the untreated sewage has been dumped underground.

In addition to the inadequate facilities at many monitoring stations, there simply aren’t enough of them.

Source: Peoples Daily (By Wu Wencong)  Read more here

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