About 400 people turned out for a public forum where federal officials continued to answer the public's questions about the village of Crestwood's secret use of a polluted well.

The commonality of the latter practice, together with the prevalence of polluted shallow wells used for drinking water supply in urban areas, has led to repeated epidemics of gastrointestinal infections.

The Banu Musa also invented an early gas mask, for protecting workers in polluted wells.

They suffered from the stench of the many dead, and many men became ill through drinking from polluted wells.

About $65 million will be used to upgrade many of Suffolk's aging sewage treatment plants and to extend water service into areas now threatened by polluted wells.

"Nearly all the polluted wells in the U.S. seem less of a hazard than chlorinated tap water."

Most of the population depends on polluted shallow wells that are at risk of running dry.

Because it resembled the yellowish water from the island's polluted wells.

Medieval Romans were reduced to drawing water from polluted wells and the Tiber River.

Most of the highly polluted wells were noted to be hand-dug and shallow while those with low chloride levels were drilled and cased.