Table 11 Ecosystem risk factor (Er) and index (Ir) of heavy metals In Nworie Inland aquatic ecosystem Inand

11.940

8 × 10

4 × 10^–3

9.5 × 10^–3

0.249

3.3 × 10⁻

12.204

9.480

1.1 × 10^–3

0.016

8.5 × 10^–3

0.232

3.3 × 10^–4

9.738

27.24

6.6 × 10^–3

0.160

7.5 × 10^–4

0.111

1.8 × 10^–3

27.520

16.22

2.8 × 10^–3

0.053

6.3 × 10^–3

0.197

8.2 × 10^–3

16.48

LPER

∑ⁱ_r ≤ 40

LPER

∑ⁱ_r ≤ 40

LPER

∑ⁱ_r ≤ 40

LPER

∑ⁱ_r ≤ 40

LPER

∑ⁱ_r ≤ 40

LPER

∑ⁱ_r ≤ 40

LER

I_r < 150