Arnold recently completed a TV campaign for the bottled-water marketer featuring a man with a backpack handing out water to joggers, passersby and even a dog. The humorous commercial ran on spot TV and cable in San Francisco, Sacramento, San Diego and Los Angeles, and on WGN radio nationally.
The spots started running in late March and end in June.
Roxanne is the country's fifth-largest bottled water company with a 6% share, according to Beverage Digest.
Crystal Geyser received $965,000 in measured media in 1999 but nothing last year, according to Taylor Nelson Sofres' CMR.
Roxanne could not be reached for comment by press time.