It is an undeniable fact that groundwater pollution in China has reached critical levels. Over the past year, numerous cases of groundwater contamination have been reported, drawing widespread public concern. Currently, the pollution trend is expanding from isolated points to broader areas, spreading from east to west, and from urban centers to rural regions. This issue is no longer local but has evolved into a regional challenge. Unlike surface water, groundwater is often referred to as "the lifeblood" of human society. Once polluted, it can take thousands of years to restore, making prevention crucial.
According to environmental experts in Dongguan, groundwater is increasingly contaminated due to industrial wastewater discharge, untreated domestic sewage, excessive use of fertilizers and pesticides, leaching from landfills, and leaks from underground oil tanks. Experts from the China Geological Survey have revealed that 90% of China's groundwater is contaminated to some extent, with 64% being heavily polluted. In the 1.97 million square kilometers of plain areas assessed by the National Water Resources Survey, the most severe pollution was found in the Taihu, Liaohe, Haihe, and Huaihe river basins. The overuse of fertilizers and pesticides has led to the prevalence of "three nitrates"—ammonia nitrogen, nitrates, and nitrites—in groundwater. In the Yangtze River Delta region, nitrate levels in groundwater have exceeded safe limits. Additionally, organic pollutants are also present, with trace amounts of harmful substances detected in many areas. These include carcinogens, teratogens, and mutagens—substances that are difficult to break down through microbial action but can be easily absorbed by organisms and eventually enter the human food chain.
In Beijing, Tianjin, and Hebei, more than 100 types of pollutants have been identified in groundwater, many of which fall into the category of "three harmful substances." In recent years, excessive groundwater extraction has created large underground "funnels," leading to increased backflow and further contaminating deeper aquifers. According to official reports, over-exploitation of groundwater in North China has reached 120 billion cubic meters—equivalent to the volume of 200 Baiyangdian Lakes. This has caused a significant drop in groundwater levels, forming a massive funnel zone across the North China Plain. Polluted water from these areas not only affects shallow groundwater but also seeps deeper, contaminating even the most protected layers of underground water sources.
To address this growing crisis, continuous monitoring, stricter regulations, and sustainable management practices are essential. The situation calls for immediate action to prevent further degradation and protect one of our most vital natural resources.
Keywords: Dongguan Waste Gas Treatment, Dongguan Wastewater Treatment, Dongguan Noise Control, Dongguan Dust Treatment
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