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Sometimes sediment in the pipes, or at a fitting, can dislodge and work its way through. If you can access the water filter, remove it, put a catch basin under and teat at that location. Try emptying the filter (through a strainer) while shaking.
If your on well water it most likely is sediment from the well and you'll need to change the filter and fluseh the line.
If the fridge is still under warranty I would highly reccommend that you contact the company!