Well it will have a water feature. It will contain a waterfall where the water flows down the rock face into a stream.

I did find this product for sealing concrete counter tops which is non toxic and food safe.

Product Description

CHENG Sealer protects your countertop without sacrificing the warm luster and beauty of the concrete. A safe, non-toxic way to get maximum stain protection. It's the same sealer the pros use. CHENG Concrete Countertop Sealer leads the Countertop Care Product line, the only maintenance products specifically designed for concrete countertops. CHENG Concrete Countertop Sealer will protect your project without sacrificing the warm luster and beauty of the concrete surface. The water-based formulation of CHENG Concrete Countertop Sealer makes it a safe, non-toxic choice to get maximum stain protection and a beautiful, natural finish.



http://www.amazon.com/Cheng-Concrete...5052454&sr=8-1