State media say the spill in an upstream tributary reached the massive river Monday. Thousands of people in northern China have been told to stop using water from the Yellow River.
The diesel oil spilled last Wednesday from a ruptured pipeline into the Wei River. That pipeline in Shaanxi province is owned by China National Petroleum Corporation. China’s official news agency, Xinhua, says the company immediately closed the pipeline when the leak was discovered, but not before about 150,000 liters had spilled out.
See also a report from BBC.