Najafgarh drain is the biggest drain in Delhi and contributes about 60% of the total wastewater that gets discharged from Delhi into river Yamuna. The drain traverses a length of 51 km before joining river Yamuna, and is unlined for about 31 km along its initial stretch. In recent times, efforts have been made for limited withdrawal of groundwater from shallow aquifers in close vicinity of Najafgarh drain coupled with artificial recharge of groundwater. In this perspective, assessment of groundwater quality in shallow aquifers in vicinity of the Najafgarh drain of Delhi and hydrogeological characterization of adjacent areas were done. The groundwater quality was examined in perspective of Indian as well as World Health Organization’s drinking water standards. The spatial variation in groundwater quality was studied. The linkages between trace element occurrence and hydrochemical facies variation were also established. The shallow groundwater along Najafgarh drain is contaminated in stretches and the area is not suitable for large-scale groundwater development for drinking water purposes.
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Acknowledgements
Author (AS) thanks the Council of Scientific and Industrial Research for financial grant through a junior research fellowship. It is duly acknowledged that the groundwater sampling was done by the first author when he was working as a Scientist at Central Ground Water Board and the samples were analysed at CGWB Laboratory, Chandigarh. The data for publication was taken from CGWB Report by Shekhar (2008). The authors are grateful to anonymous reviewers for their meticulous review of the manuscript, which helped in improving the manuscript.
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Appendix A
Appendix A
Table showing the location of sampling stations and the concentration of different chemical parameters. Cd – Cadmium, Cr – Chromium, Cu – Copper, Fe – Iron, Mn – Manganese, Ni – Nickel, Pb – Lead, Zn – Zinc, As – Arsenic, EC – Electrical conductivity, Cl – Chloride, SO4 – Sulphate, NO3 – Nitrate, F – Fluoride, Ca – Calcium, Mg – Magnesium, Na – Sodium, K – Potassium, HCO3 – Bicarbonate, N.A – Not analysed/data not available.
Sl. No. | Locality | Cd | Cr | Cu | Fe | Mn | Ni | Pb | Zn | As | EC | Cl | SO4 | NO3 | F | Ca | Mg | Na | K | HCO3 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1. | Rawta | 0.007 | 0.032 | 0.003 | 3.885 | 0.017 | 0.007 | 0.02 | 0.01 | 0 | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A. | N.A | N.A |
2. | Shikarpur road | 0.005 | 0.029 | 0.011 | 3.381 | 0.114 | 0 | 0.02 | 0.101 | 0 | 2250 | 489 | 125 | 75 | 2.23 | 21 | 88 | 410 | 10 | 467 |
3. | Shikarpur-2 | 0.009 | 0.041 | 0.017 | 1 | 0.076 | 0 | 0.014 | 0.032 | 0 | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A |
4. | Nanakheri | 0.004 | 0.013 | 0.007 | 3.072 | 0.026 | 0 | 0.04 | 0.2 | 0 | 2780 | 774 | 95 | 55 | 0.84 | 83 | 121 | 390 | 3 | 317 |
5. | Isapur Khera | 0.005 | 0.042 | 0.003 | 0 | 0 | 0 | 0.02 | 0.025 | 0 | 2340 | 300 | 50 | 48 | 1.47 | 13 | 45 | 510 | 6 | 995 |
6. | Dhulsiras | 0.002 | 0.017 | 0.073 | 1.7 | 0.182 | 0 | 0.04 | 4 | 0 | 2120 | 511 | 230 | 8 | 0.3 | 79 | 82 | 315 | 4 | 249 |
7. | Chhawla | 0.009 | 0.046 | 0.003 | 1.7 | 0.045 | 0 | 0 | 1 | 0 | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A |
8. | Kutub Vihar | 0 | 0.025 | 0.005 | 2.3 | 0.096 | 0 | 0.04 | 0.133 | 0 | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A |
9. | Dwarka Sec.19 | 0.003 | 0.046 | 0.001 | 2.259 | 0.029 | 0 | 0 | 0.11 | 0 | 1620 | 362 | 50 | 13 | 0.3 | 53 | 26 | 315 | 5 | 437 |
10. | Dwarka Sec.16 STP | 0.006 | 0.025 | 0 | 0.2 | 0.211 | 0 | 0.003 | 0.4 | 0 | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A | N.A |
11. | Dharampura | 0 | 0.016 | 0.008 | 2 | 0.224 | 0 | 0 | 0.164 | 0 | 4980 | 1548 | 370 | 149 | 0.43 | 290 | 238 | 570 | 13 | 196 |
12. | Dwarka Sec.-16 J Flat | 0.003 | 0.024 | 0.001 | 1.333 | 0.015 | 0 | 0 | 0.014 | 0 | 1100 | 223 | 105 | 10 | 0.5 | 53 | 52 | 135 | 6 | 234 |
13. | Nand Vihar | 0.005 | 0.043 | 0.035 | 1.7 | 0.068 | 0 | 0.1 | 1.3 | 0 | 1180 | 113 | 50 | 9 | 1.2 | 41 | 32 | 175 | 4 | 459 |
14. | Ghasipura | 0.003 | 0 | 0.001 | 1.4 | 0.113 | 0 | 0.02 | 5 | 0 | 1080 | 223 | 90 | 25 | 0.21 | 53 | 63 | 100 | 5 | 198 |
15. | Deep Enclave | 0.009 | 0.007 | 0.001 | 1.055 | 0.421 | 0 | 0 | 0.8 | 0.0009 | 1325 | 223 | 50 | 0.2 | 0.14 | 60 | 37 | 200 | 14 | 458 |
16. | Vikash Nagar | 0.005 | 0.031 | 0.005 | 7.4 | 0.358 | 0.014 | 0.04 | 0.6 | 0.0015 | 1470 | 287 | 100 | 0.4 | 0 | 51 | 29 | 260 | 12 | 351 |
17. | Ranhola | 0.01 | 0.048 | 0.004 | 0.382 | 0.011 | 0 | 0.04 | 0.016 | 0.0019 | 2250 | 425 | 155 | 75 | 0.71 | 18 | 62 | 440 | 2 | 458 |
18. | Nathan Vihar | 0.009 | 0.024 | 0.002 | 0 | 0 | 0 | 0 | 0.004 | 0.0026 | 6000 | 1297 | 1140 | 237 | 1.78 | 75 | 107 | 1100 | 650 | 679 |
19. | Chander Vihar | 0.004 | 0.056 | 0.001 | 1.006 | 0.01 | 0 | 0.06 | 0.095 | 0.0019 | 2430 | 277 | 65 | 107 | 2.23 | 31 | 76 | 475 | 5 | 1007 |
20. | Nihal Vihar | 0.011 | 0.031 | 0.006 | 4.879 | 0.496 | 0 | 0.08 | 0.154 | 0.001 | 2190 | 475 | 95 | 111 | 0.36 | 26 | 127 | 275 | 6 | 354 |
21. | Karampura | 0.007 | 0.023 | 0.005 | 1.7 | 0.546 | 0.003 | 0.06 | 0.092 | 0.0013 | 3850 | 872 | 430 | 116 | 0.66 | 106 | 127 | 575 | 4 | 267 |
22. | Shashtri Nagar | 0 | 0.053 | 0.003 | 1.667 | 0.031 | 0 | 0.04 | 8 | 0.0008 | 1100 | 142 | 115 | 0.2 | 0.05 | 82 | 21 | 150 | 7 | 344 |
23. | Roop Nagar | 0.003 | 0.014 | 0.006 | 3.11 | 0.022 | 0 | 0.04 | 0.134 | 0.0028 | 2120 | 188 | 200 | 85 | 7.14 | 29 | 36 | 460 | 2 | 747 |
24. | Timarpur | 0.006 | 0.047 | 0.001 | 1.615 | 0.149 | 0 | 0.08 | 0.047 | 0.0001 | 2530 | 305 | 385 | 261 | 1.25 | 71 | 96 | 425 | 3 | 488 |
25. | Nehru Vihar D-9 | 0.008 | 0.03 | 0.001 | 3.218 | 1.2 | 0.012 | 0.02 | 0.074 | 0.015 | 1255 | 184 | 25 | 28 | 2.93 | 68 | 48 | 150 | 7 | 466 |
26. | Nehru Vihar C-280 | 0.004 | 0.051 | 0.005 | 1.3 | 0.7 | 0 | 0.02 | 0.181 | 0.0003 | 755 | 113 | 32 | 4 | 0.45 | 40 | 39 | 73 | 2 | 259 |
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SHEKHAR, S., SARKAR, A. Hydrogeological characterization and assessment of groundwater quality in shallow aquifers in vicinity of Najafgarh drain of NCT Delhi. J Earth Syst Sci 122, 43–54 (2013). https://doi.org/10.1007/s12040-012-0256-9
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DOI: https://doi.org/10.1007/s12040-012-0256-9