The drinking water has become contaminated with lead.

饮用水被铅污染了。

《牛津词典》

More studies are needed to prove the adaptability of the technique, but its impact could be huge. In countries with poor sanitation, outbreaks caused by drinking contaminated water often prove fatal.

研究人员表示，在那些卫生状况恶劣的国家，饮用水污染导致的疾病爆发往往是致命的。

youdao

In the early 1970s most of the rural population USES contaminated groundwater for drinking, bathing, washing clothes and dishes, and irrigation. Waterborne diseases are rampant.

在上世纪70年代早期，大部分农村居民使用被污染的地下水，用来饮用、沐浴、洗衣、洗碗以及灌溉。一时间，由水传播的疾病十分猖獗。

youdao

"Traditional environmental risks are those that face largely the poor in China, risks like drinking water contaminated with infectious organisms or highly polluted indoor air from people burning wood or other dirty fuels inside homes without chimneys."

VOA: standard.2010.04.07

There is no credible data indicating that fracturing of shale formations has ever contaminated drinking water.

FORBES: Why Anti-Fracking Groups Are Shifting Their Story From Water To Air Quality

Scientists have just unveiled an easy-to-use, inexpensive method for removing arsenic from contaminated drinking water using chopped up bits of discarded plastic bottles.

FORBES: "Plastic Bottle" Filters Can Help Millions Poisoned by Arsenic-Contaminated Water

The study also cited other factors as contributing to the plight of the urban poor such as improper sanitation, contaminated drinking water, and urban pollution.

BBC: Indian children 'malnourished'