Groundwater Quality Assessment of a Multi-Layered Aquifer in a Desert Environment: A Case Study in Wadi ad-Dawasir, Saudi Arabia
Abstract
:1. Introduction
2. Study Area
2.1. Physiography and Area Characteristics
2.2. Geologic Setup
2.3. Hydrogeology
3. Materials and Methods
3.1. Hydrochemistry
3.2. Land-Use Change and Hydrodynamics
4. Results
4.1. Agricultural Expansion and Hydrodynamics
4.2. Hydrochemical Characteristics and Health Risks
4.3. Emergence and Spatial Distribution of Pollutants
4.4. Mechanisms Controlling Hydrochemistry
4.5. Factor Analysis (FA)
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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T | pH | DO | Eh | Turbidity | Total Hardness | TDS | Fe2+ | NH4 | HCO3− | NO3− | F | NO2− | PO42− | SiO2 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Quaternary | Min | 30.9 | 7.15 | 2.01 | −145 | 0.02 | 314 | 355 | 0.17 | 0.17 | 62 | 10.8 | 0.11 | 0.04 | 0.23 | 13.8 |
Max | 39.1 | 7.96 | 5.82 | −22 | 29.05 | 4737 | 16,500 | 8.53 | 3.54 | 335 | 2781 | 2.98 | 0.36 | 0.29 | 59.4 | |
Mean | 32.8 | 7.5 | 4.3 | −52.9 | 2.7 | 1519 | 4659.0 | 2.8 | 1.8 | 177.0 | 483 | 0.8 | 0.1 | 0.3 | 28.0 | |
SD | 2.1 | 0.2 | 1.0 | 42.3 | 8.3 | 1343.6 | 3734.2 | 3.3 | 1.7 | 62.1 | 952.4 | 1.0 | 0.1 | 0.0 | 12.2 | |
count | 13 | 13 | 13 | 10 | 12 | 12 | 45 | 8 | 3 | 45 | 10 | 12 | 6 | 2 | 12 | |
Khuff-Kumdah | Min | 30.1 | 6.7 | 1.9 | −180 | 0.0 | 92 | 472 | 0.0 | 2.4 | 105 | 2.6 | 0.1 | 0.0 | 0.1 | 15.7 |
Max | 46 | 8.4 | 7.3 | −17 | 0.5 | 1479 | 5405 | 1.8 | 2.4 | 255 | 145.1 | 0.7 | 1.4 | 0.4 | 31.4 | |
Mean | 32.5 | 7.6 | 4.4 | −50 | 0.1 | 629.3 | 1906.6 | 0.5 | 2.4 | 152.5 | 33.2 | 0.3 | 0.2 | 0.2 | 22.6 | |
SD | 6.3 | 0.3 | 1.1 | 39.6 | 0.1 | 302.1 | 1061 | 0.6 | 25 | 32.3 | 0.2 | 0.3 | 0.1 | 4.5 | ||
count | 36 | 36 | 36 | 24 | 35 | 35 | 36 | 17 | 1 | 36 | 33 | 35 | 17 | 5 | 35 | |
Upper Wajid | Min | 25 | 6.97 | 1.73 | −68 | 0.02 | 188 | 414 | 0.06 | 0 | 73 | 13.7 | 0.07 | 0.04 | 0.35 | 14.2 |
Max | 54.8 | 8.06 | 8.22 | 1 | 0.3 | 1387 | 3045 | 1.1 | 0 | 222 | 270 | 0.48 | 0.91 | 0.35 | 17.3 | |
Mean | 34.4 | 7.4 | 4 | −25.5 | 0.1 | 728.1 | 1541.5 | 0.4 | 118.5 | 71.3 | 0.2 | 0.3 | 0.4 | 15.8 | ||
SD | 4.8 | 0.3 | 1.6 | 21.5 | 0.1 | 353.1 | 670.8 | 0.4 | 41.8 | 70.8 | 0.1 | 0.5 | 0.8 | |||
count | 119 | 11 | 11 | 8 | 11 | 11 | 46 | 6 | 0 | 24 | 11 | 9 | 3 | 1 | 11 | |
Lower Wajid | Min | 30 | 6.9 | 0.4 | −205 | 0.0 | 245 | 563 | 0.0 | 0.5 | 56 | 11.2 | 0.0 | 0.1 | 0.5 | 14.1 |
Max | 40.7 | 8.8 | 6.2 | 5.0 | 2.0 | 1097 | 4167 | 0.9 | 0.5 | 259 | 118 | 0.4 | 0.1 | 0.5 | 18.7 | |
Mean | 33.6 | 7.7 | 3.8 | −75.5 | 0.2 | 558.9 | 1518.2 | 0.4 | 0.5 | 140.7 | 52.4 | 0.1 | 0.1 | 0.5 | 16.7 | |
SD | 3 | 0.7 | 1.3 | 84.6 | 0.5 | 243.4 | 799.7 | 0.3 | 45.7 | 29.8 | 0.1 | 0.0 | 1.1 | |||
count | 17 | 17 | 17 | 14 | 17 | 17 | 73 | 10 | 1 | 23 | 13 | 16 | 2 | 1 | 17 | |
W. Dawasir | Min | 3.1 | 6.63 | 0.41 | −205 | 0.02 | 92 | 83 | 0.03 | 0.05 | 54 | 2.6 | 0.04 | 0.01 | 0.01 | 10.1 |
Max | 54.8 | 8.79 | 13.8 | 22 | 29.05 | 4737 | 16,500 | 8.53 | 5.66 | 335 | 2781 | 5.27 | 1.38 | 16.1 | 59.4 | |
Mean | 33.9 | 7.5 | 4.4 | −46.7 | 0.3 | 607.2 | 1838.3 | 0.9 | 1.2 | 148.5 | 68.5 | 0.3 | 0.1 | 0.8 | 18.7 | |
SD | 4.9 | 0.4 | 1.6 | 51.9 | 2.2 | 530.0 | 1541.8 | 1.4 | 1.6 | 42.4 | 259.5 | 0.5 | 0.2 | 3.1 | 5.3 | |
count | 185 | 186 | 175 | 125 | 179 | 179 | 686 | 104 | 16 | 238 | 153 | 173 | 78 | 26 | 178 |
T | pH | DO | Eh | Turbidity | Total Hardness | TDS | Fe2+ | NH4 | HCO3− | NO3− | F | NO2− | PO42− | SiO2 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
T | 1 | ||||||||||||||
pH | 0.09 | 1 | |||||||||||||
DO | −0.04 | 0.06 | 1 | ||||||||||||
Eh | −0.17 | −0.90 | −0.09 | 1 | |||||||||||
Turbidity | −0.01 | −0.04 | −0.12 | −0.10 | 1 | ||||||||||
Total Hardness | −0.21 | −0.14 | −0.09 | 0.14 | 0.57 | 1 | |||||||||
TDS | −0.21 | −0.11 | −0.03 | 0.10 | 0.51 | 0.92 | 1 | ||||||||
Fe2+ | 0.07 | 0.07 | −0.11 | 0.00 | 0.46 | 0.17 | 0.24 | 1 | |||||||
NH4 | 0.0 | 0.05 | 0.02 | 0.49 | 0.84 | 0.90 | 0.80 | 0.98 | 1 | ||||||
HCO3− | 0.32 | 0.11 | −0.02 | −0.26 | −0.14 | −0.30 | 0.11 | −0.05 | −0.61 | 1 | |||||
NO3− | −0.08 | −0.10 | −0.01 | 0.19 | 0.50 | 0.66 | 0.85 | 0.51 | 0.28 | −0.33 | 1 | ||||
F | −0.08 | −0.04 | 0.10 | −0.02 | 0.16 | 0.60 | 0.60 | 0.02 | 0.66 | −0.04 | 0.39 | 1 | |||
NO2− | −0.01 | −0.02 | 0.00 | 0.07 | −0.02 | 0.06 | 0.08 | −0.08 | −0.14 | −0.24 | 0.10 | −0.02 | 1 | ||
PO42− | −0.02 | −0.27 | −0.27 | 0.48 | −0.09 | −0.02 | −0.04 | −0.25 | −0.23 | −0.32 | 0.05 | −0.24 | 0.14 | 1 | |
SiO2 | 0.06 | 0.08 | −0.05 | −0.13 | 0.29 | 0.36 | 0.40 | 0.43 | 0.90 | 0.18 | 0.12 | 0.19 | −0.06 | −0.13 | 1 |
pH | Turbidity NTU | Total Hardness | TDS | Fe2+ | NH4 | NO3− | F | |
---|---|---|---|---|---|---|---|---|
WHO 2011 | 8.5 | 1 | 200 | 1000 | 0.3 | 1.5 | 50 | 1.5 |
Quaternary | 16.6 | 100 | 85.7 | 62.5 | 2.3 | 33.3 | 18.2 | |
Khuff-Kumdah | 91.4 | 70.2 | 50 | 14.7 | ||||
Upper Wajid | 3.4 | 1.8 | 100 | 63.4 | 68.1 | 0.5 | 33.7 | |
Lower Wajid | 33.3 | 6.6 | 100 | 59.7 | 44.4 | 33.3 | ||
W. Dawasir | 5.5 | 2.8 | 98.8 | 65.7 | 63 | 0.7 | 32 | 1.2 |
F1 | F2 | F3 | F4 | F5 | F6 | Communality | |
---|---|---|---|---|---|---|---|
T | −0.17 | −0.34 | 0.01 | −0.14 | 0.13 | 0.14 | 0.20 |
pH | −0.10 | −0.63 | −0.37 | 0.40 | −0.33 | −0.12 | 0.83 |
DO | −0.11 | 0.05 | −0.06 | 0.13 | 0.05 | 0.06 | 0.04 |
Eh | 0.08 | 0.70 | 0.35 | −0.37 | 0.30 | −0.02 | 0.85 |
Turbidity | 0.78 | −0.16 | −0.32 | −0.49 | −0.09 | 0.02 | 0.99 |
Total Hardness | 0.95 | 0.13 | 0.10 | 0.18 | −0.08 | 0.07 | 0.98 |
TDS | 0.98 | 0.04 | 0.08 | 0.16 | 0.02 | 0.00 | 1.00 |
Fe2+ | 0.31 | −0.20 | −0.21 | −0.26 | 0.19 | −0.18 | 0.31 |
NH4 | 0.67 | −0.17 | −0.27 | −0.43 | −0.08 | 0.08 | 0.75 |
HCO3− | −0.22 | −0.55 | 0.06 | 0.00 | 0.42 | 0.37 | 0.67 |
NO3− | 0.84 | −0.04 | −0.27 | −0.37 | −0.19 | 0.05 | 0.96 |
F | 0.47 | 0.04 | 0.10 | 0.33 | 0.05 | 0.29 | 0.42 |
NO2− | −0.02 | 0.08 | 0.02 | 0.01 | −0.07 | −0.10 | 0.02 |
PO42− | −0.01 | −0.18 | 0.65 | −0.27 | −0.42 | −0.08 | 0.70 |
SiO2 | 0.49 | −0.40 | 0.11 | 0.13 | 0.54 | −0.38 | 0.87 |
Eigenvalue | 9.73 | 2.21 | 1.54 | 1.37 | 1.02 | 0.49 | |
Variability (%) | 44.23 | 10.06 | 7 | 6.24 | 4.63 | 2.24 | |
Cumulative% | 44.23 | 54.29 | 61.29 | 67.52 | 72.15 | 74.39 |
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Masoud, A.A.; Aldosari, A.A. Groundwater Quality Assessment of a Multi-Layered Aquifer in a Desert Environment: A Case Study in Wadi ad-Dawasir, Saudi Arabia. Water 2020, 12, 3020. https://doi.org/10.3390/w12113020
Masoud AA, Aldosari AA. Groundwater Quality Assessment of a Multi-Layered Aquifer in a Desert Environment: A Case Study in Wadi ad-Dawasir, Saudi Arabia. Water. 2020; 12(11):3020. https://doi.org/10.3390/w12113020
Chicago/Turabian StyleMasoud, Alaa A., and Ali A. Aldosari. 2020. "Groundwater Quality Assessment of a Multi-Layered Aquifer in a Desert Environment: A Case Study in Wadi ad-Dawasir, Saudi Arabia" Water 12, no. 11: 3020. https://doi.org/10.3390/w12113020