The first phase of work will bring new sewage treatment plants to Glen Mona, Dalby, Maughold Village, Port Lewaigue, Glen Maye and Corony.

BBC: Isle of Man sewage development to cost millions

They point to newly built sewage treatment plants, and sanitation workers who skim thousands of tons of floating rubbish off the reservoir each year.

NPR: Concerns Rise with Water of Three Gorges Dam

In the river's holiest place, Varanasi, the permanent population has soared in the last 30 years to around 3m, and a chronic pollution problem (mostly caused by human detritus) becomes uncontrollable whenever electricity fails and sewage treatment plants break down though that does not seem to deter pilgrims from bathing in waters they see as eternally sacred.

ECONOMIST: Pilgrimages

Certain sewage-treatment plants were damaged, and untreated sewage flowed into the river and then into Narragansett Bay, forcing a ban on shellfish-fishing throughout the state.

ECONOMIST: Things were bad enough in Rhode Island. Then the rains came

Microturbines can run on natural gas as well as other fuels, including kerosene and the methane given off by landfills and sewage-treatment plants.

FORBES: The Revolution That Wasn't--Yet

Schools, hospitals and sewage-treatment plants are falling into disrepair.

NPR: Under Dictator, Zimbabwe Slides into Chaos

The UN wants funds for emergency cholera treatment and for clean water supply systems and sewage plants.

BBC: UN launches appeal to fight Haiti cholera epidemic

Solid waste combustion, sewage treatment, stone quarrying, marinas, and oil and coal-fired power plants have air pollution damages larger than their value added.

FORBES: Pollution Costs More Than What is Produced to Make the Pollution