Genomic DNA purified using the E.Z.N.A.® Water DNA Kit. Purified genomic DNA from 7 different water sources was isolated with the E.Z.N.A.® Water DNA Kit. DNA was extracted in duplicate from water samples as follows: sample 1 from 20 L tap water, sample 2 from 5 L air conditioner water, sample 3 from 3 L spring water, sample 4 from 2 L sanitary waste water, sample 5 from 5 L lake water, sample 6 from 6 L pool water, and sample 7 from 3 L industrial sewage water. Genomic DNA (30% of total purified DNA) was analyzed on a 1% agarose gel to demonstrate yield and quality of the DNA. M: Lambda Hind III DNA Marker.