...[A] charitable campaign created last year by [Droga5, part of Publicis]...benefits efforts by Unicef to provide clean drinking water to children in the third world... The campaign, called the Tap Project (tapproject.org), encourages diners at participating restaurants during the week of March 16 to donate $1 each time they order local tap water instead of bottled water... Among the agencies producing...materials for the Tap Project...are...TBWA/Chiat/Day, part of the TBWA Worldwide unit of the Omnicom Group,...Goodby, Silverstein & Partners, also part of Omnicom; Hill, Holliday, Connors, Cosmopulos, owned by the Interpublic Group of Companies; Saatchi & Saatchi, part of Publicis; and Wieden & Kennedy. [also refers to Energy BBDO, Ketchum, OMD (all part of Omnicom), Trumpet Advertising]