Counts in cfu/mL

Sample

Water

Sediment

A

6.6 × 10⁴

5.6 × 10⁴

B

4.3 × 10⁴

2.8 × 10⁴

C

4.4 × 10⁴

1.6 × 10⁴

D

3.0 × 10⁴

3.8 × 10⁴

E

7.0 × 10⁴

5.6 × 10⁴