One way to handle water and sanitation issues in the post-2015 development goals is to create a single goal. But others think it's better to spread the concepts throughout the post-2015 goals. "Water-related challenges hit the poor the hardest," says United Nations Water's Michel Jarraud. "This is where we should focus our efforts. We now need to build on what we already have and how to make the next goals even better."

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