The company, which makes Dasani bottled water, is strengthening its position by agreeing to market France's Evian and Danone here.

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Its filtered-water brand Dasani posted a 9% sales rise in the second quarter.

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Coke's bottled water, Dasani, introduced in 1999, is seeing increased volume.

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While Coke may be able to differentiate Dasani because it adds minerals to improve the taste, Dixon questions its recently adopted three-tier water strategy, which puts Evian as the premier brand, Dasani at the mid-level, and Dannon at the bottom.

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