No Indian city has a 24-hour domestic water supply, though efforts are under way to provide it in Mysore and a few other places.

ECONOMIST: It must also be clean

And besides, they say, the water from the Colorado River -- the city's main supply -- already has to be treated to remove all types of pollution.

CNN: San Diego hopes to recycle waste water

After a successful three-month pilot program the city now uses the Ferrator to treat its entire water supply, up to 750, 000 gallons a day.

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The company said some residents in and around Liverpool city could notice temporary low water pressure or a loss of supply as engineers re-route water supplies to all customers.

BBC: People evacuated after pipe bursts in Huyton

When the Department of Environmental Protection noticed hydrogen sulfide in the city's water supply, Stephen Hollowell, general manager of Steinhatchee's chlorine-based water-treatment plant, and his board were willing to a take a chance on new technology.

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