Table 2 Seasonal variations of bacterial indicators and Salmonella spp. in drainage water.

From: Temporal phytoremediation potential for heavy metals and bacterial abundance in drainage water

Season

Bacterial count (× 106, CFU/mL)

Total bacterial counts at 37 °C

Total bacterial counts at 22 °C

Total coliform

Fecal coliform

Fecal Streptococci

Salmonella spp.

Spring

37.36 ± 37.50

40.33 ± 38.00

2.58 ± 1.82

1.67 ± 1.88

2.36 ± 2.75

0.08 ± 0.06a

Summer

3190 ± 503.43

3406.66 ± 527.88

168.33 ± 22.03

161.30 ± 21.71

139 ± 19.22

0.88 ± 0.09c

Autumn

395 ± 28.68

453 ± 33.22

25.06 ± 17.97

23.30 ± 16.21

18.10 ± 17.65

0.25 ± 0.29b

Winter

2.62 ± 3.09

2.98 ± 3.64

0.10 ± 0.11

0.09 ± 0.10

0.12 ± 0.15

0.08 ± 0.01a

F-value

1.1

1.14

1.58

1.5

1.42

18.75**

  1. F-values represent ANOVA and letters (post-hoc Duncan test) for significant levels of seasonal variations.
  2. **p ≤ 0.01. Small letters “a”, “b” and “c” indicate to significant variation of post-hoc Duncan test.
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