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Water quality impact from mining in Prek Te

Table 5. Non-carcinogenic risk assessment for the dry season
Parameters Dry season (n=21)
Mean concentration (µg/L) Men Women Children
ADD HQ ADD HQ ADD HQ
As 1.23 0.04 0.12 0.04 014 0.06 0.21
Cu 1.06 0.03 0.00 0.03 0.00 0.05 0.00
Cr 0.40 0.01 0.00 0.01 0.00 0.02 0.01
Cd ND 0.00 0.00 0.00 0.00 0.00 0.00
Pb 0.28 0.01 0.00 0.01 0.00 0.01 0.00
Zn 1.18 0.03 0.00 0.04 0.00 0.06 0.00
Ni 0.36 0.01 0.00 0.01 0.00 0.02 0.00
Abbreviations: ADD: Average daily dose; As: Arsenic; Cu: Copper; Cd: Cadmium; Cr: Chromium; HQ: Hazard quotient;
ND: Non-detected; Ni: Nickel; Pb: Lead; Zn: Zinc.

Table 6. Non-carcinogenic risk assessment for the rainy season
Parameters Rainy Season (n=21)
Mean concentration (µg/L) Men Women Children
ADD HQ ADD HQ ADD HQ
As 8.53 0.24 0.81 0.28 0.95 0.43 1.42
Cu 26.5 0.76 0.02 0.88 0.02 1.33 0.03
Cr 1.63 0.05 0.01 0.05 0.02 0.08 0.03
Cd 0.04 0.00 0.00 0.00 0.00 0.00 0.00
Pb 0.42 0.01 0.00 0.01 0.00 0.02 0.01
Zn 84.8 2.42 0.01 2.83 0.01 4.24 0.01
Ni 8.30 0.24 0.01 0.28 0.01 0.41 0.02
Abbreviations: ADD: Average daily dose; As: Arsenic; Cu: Copper; Cd: Cadmium; Cr: Chromium; HQ: Hazard quotient;
ND: Non-detected; Ni: Nickel; Pb: Lead; Zn: Zinc.

locations may pose non-carcinogenic health risks.
Multiple studies have confirmed that children are more
susceptible to contaminants in drinking water than
adults. 30-32
Figure 2 illustrates the HI, which represents the
cumulative non-carcinogenic risk from combined
chemical contaminants across different seasons for
males, women, and children. During the rainy season, HI
values exceeded 1 for children and women, indicating
potential non-carcinogenic risks associated with the
drinking water of Prek Te. In contrast, during the dry
season, HI values remained below 1 for all groups,
suggesting no significant non-carcinogenic risks from
drinking water consumption. Figure 2. Hazard index of combined chemical
Similarly, elevated HI values (>1) were observed contaminants in drinking water across different
among children, women, and men in various drinking seasons for men, women, and children
water sources within the Tonle Sap Great Lake basin.
33
In addition, oral HI values for both adults and children them within a high-risk category for non-carcinogenic
exceeded the safe thresholds (HI > 1), classifying impact. 34

Volume 22 Issue 2 (2025) 93 doi: 10.36922/AJWEP025060037