The E.Z.N.A.® Water DNA Kit is formulated to isolate high-purity cellular DNA from water samples typically containing humic acid and inhibitors of PCR. This kit uses a novel and proprietary method to isolate genomic DNA from variety of environmental samples. This kit has been successfully used to isolate DNA from tough-to-lyse bacteria, fungi, and algae that inhabit a range of samples including tap water, lake water, river water, and sewage samples. Isolated DNA can be used for most downstream applications including PCR, Southern blot, and SNP analysis.