In a medium saucepan combine cranberries, water, orange zest, orange juice, granulated sugar, and brown sugar.
Set over medium-high heat and bring mixture to a boil, then reduce heat medium-low.
Let simmer about 10 - 12 minutes, stirring occasionally, until cranberries have burst and sauce has reduced slightly.
Allow mixture to cool about 20 - 30 minutes to thicken up slightly. Store in refrigerator in an airtight container.