Table 1 Ingestion probabilistic health risk for boreholes and water wells in Iju and Atan.

From: Probabilistic risk assessment and spatial distribution of potentially toxic elements in groundwater sources in Southwestern Nigeria

HQ (Adult)

HQ (Child)

Ingestion probabilistic health risk for boreholes locations in Iju

Metals

Mean

SD

90th Percentile

95th Percentile

99th Percentile

99.9th Percentile

Mean

SD

90th Percentile

95th Percentile

99th Percentile

99.9th Percentile

Al

7.792E-02

1.030E-02

9.121E-02

9.502E-02

1.017E-01

1.102E-01

1.317E-01

1.743E-02

1.540E-01

1.605E-01

1.723E-01

1.851E-01

Cd

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Fe

5.948E-03

9.070E-04

7.119E-03

7.438E-03

8.019E-03

8.767E-03

1.002E-02

1.542E-03

1.199E-02

1.254E-02

1.368E-02

1.498E-02

Pb

1.108E + 00

5.040E-01

1.753E + 00

1.938E + 00

2.296E + 00

2.632E + 00

1.864E + 00

8.389E-01

2.948E + 00

3.240E + 00

3.828E + 00

4.528E + 00

Cu

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Mn

5.433E-03

4.500E-04

6.007E-03

6.174E-03

6.476E-03

6.793E-03

9.158E-03

7.600E-04

1.013E-02

1.040E-02

1.092E-02

1.153E-02

Cr

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Ni

1.282E-02

3.157E-03

1.689E-02

1.804E-02

2.015E-02

2.312E-02

2.171E-02

5.357E-03

2.860E-02

3.044E-02

3.427E-02

3.738E-02

Ingestion probabilistic health risk for water wells locations in Iju

Al

1.117E-01

9.990E-03

1.244E-01

1.280E-01

1.352E-01

1.434E-01

1.887E-01

1.652E-02

2.098E-01

2.159E-01

2.273E-01

2.428E-01

Cd

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Fe

1.160E-02

7.011E-03

2.057E-02

2.313E-02

2.817E-02

3.336E-02

1.960E-02

1.187E-02

3.496E-02

3.925E-02

4.701E-02

5.578E-02

Pb

4.559E + 00

2.499E + 00

7.750E + 00

8.624E + 00

1.028E + 01

1.239E + 01

7.606E + 00

4.200E + 00

1.297E + 01

1.443E + 01

1.708E + 01

2.104E + 01

Cu

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Mn

6.362E-03

1.989E-03

8.934E-03

9.630E-03

1.097E-02

1.250E-02

1.077E-02

3.348E-03

1.508E-02

1.625E-02

1.857E-02

2.103E-02

Cr

6.057E-02

1.813E-02

8.384E-02

9.049E-02

1.031E-01

1.156E-01

1.024E-01

3.068E-02

1.421E-01

1.529E-01

1.736E-01

1.994E-01

Ni

1.694E-02

5.401E-03

2.375E-02

2.592E-02

2.971E-02

3.444E-02

2.850E-02

9.103E-03

4.008E-02

4.357E-02

4.958E-02

5.683E-02

Ingestion probabilistic health risk for boreholes locations in Atan

Al

2.220E-02

9.650E-03

3.472E-02

3.814E-02

4.472E-02

5.341E-02

3.720E-02

1.641E-02

5.818E-02

6.426E-02

7.562E-02

8.837E-02

Cd

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Fe

3.130E-04

1.220E-04

4.690E-04

5.130E-04

5.970E-04

6.840E-04

5.290E-04

2.100E-04

7.980E-04

8.800E-04

1.020E-03

1.171E-03

Pb

2.347E-01

2.849E-01

5.978E-01

7.061E-01

8.924E-01

1.098E + 00

4.088E-01

4.646E-01

1.010E + 00

1.182E + 00

1.485E + 00

1.830E + 00

Cu

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Mn

3.349E-03

1.837E-03

5.702E-03

6.413E-03

7.723E-03

9.186E-03

5.655E-03

3.085E-03

9.595E-03

1.072E-02

1.288E-02

1.487E-02

Cr

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Ni

1.018E-03

6.460E-04

1.842E-03

2.091E-03

2.534E-03

2.991E-03

1.728E-03

1.094E-03

3.122E-03

3.515E-03

4.268E-03

5.141E-03

Ingestion probabilistic health risk for water wells locations in Atan

Al

5.682E-02

7.146E-03

6.588E-02

6.863E-02

7.361E-02

7.951E-02

9.591E-02

1.197E-02

1.114E-01

1.154E-01

1.236E-01

1.328E-01

Cd

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Fe

1.968E-03

8.550E-04

3.056E-03

3.364E-03

3.955E-03

4.659E-03

3.293E-03

1.450E-03

5.161E-03

5.698E-03

6.664E-03

7.765E-03

Pb

1.049E-01

7.969E-02

2.061E-01

2.363E-01

2.935E-01

3.594E-01

1.755E-01

1.326E-01

3.434E-01

3.903E-01

4.786E-01

5.916E-01

Cu

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Mn

5.391E-03

5.490E-04

6.079E-03

6.297E-03

6.703E-03

7.108E-03

9.096E-03

9.060E-04

1.025E-02

1.059E-02

1.120E-02

1.193E-02

Cr

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

Ni

5.806E-03

1.292E-03

7.455E-03

7.929E-03

8.836E-03

9.922E-03

9.756E-03

2.157E-03

1.251E-02

1.329E-02

1.492E-02

1.640E-02