Hydro-geochemical Investigation and Quality Assessment of Groundwater for Drinking and Agricultural Use in Jawaharlal Nehru University (JNU), New Delhi, India - Management of Natural Resources in a Changing Environment - page 10

Table 3 Average chemical composition of different hydrochemical facies

TDS
(mg/l)

Ca 2+
(meq/l)

Mg 2+
(meq/l)

Na +
(meq/l)

K +
(meq/l)

HCO 3 −
(meq/l)

SO 4 2−
(meq/l)

Cl −
(meq/l)

F −
(meq/l)

PO 4 3−
(meq/l)

Sample
number Facies

1, 3, 4

Ca 2+ -Na + -HCO 3 − (Pre-monsoon season)

Minimum 303 2.75 0.59 2.42 0.03 4.26 0.78 0.03 0.03 0.01

Maximum 343 3.35 0.63 2.74 0.10 4.98 0.91 0.98 0.03 0.01

Average 327 3.02 0.61 2.55 0.07 4.64 0.85 0.49 0.02 0.01

% content 48.12 9.93 40.77 1.18 77.28 14.22 7.96 0.44 0.10

Ca 2+ -Na + -HCO 3 − (Post-monsoon season) 1, 3, 4, 8

Minimum 260 1.96 0.99 1.71 0.01 3.67 0.80 0.05 0.03 0.00

Maximum 332 3.51 1.66 1.92 0.09 4.78 0.95 0.50 0.10 0.01

Average 292 2.64 1.26 1.83 0.04 4.24 0.88 0.30 0.05 0.01

% content 45.54 21.53 32.30 0.63 77.05 16.08 5.88 0.97 0.02

Na + -Ca 2+ -HCO 3 − (Pre-monsoon season) 5, 6, 7, 8

Minimum 207 1.44 0.63 1.57 0.01 2.88 0.82 0.02 0.02 0.01

Maximum 583 4.26 0.93 5.83 0.04 6.42 1.28 2.84 0.10 0.02

Average 432 2.93 0.73 4.32 0.02 4.97 1.09 1.66 0.06 0.01

% content 35.64 8.55 55.53 0.28 63.29 13.79 21.91 0.84 0.17

Na + -Ca 2+ -HCO 3 − (Post-monsoon season) 5, 6, 7

Minimum 339 2.19 0.55 3.13 0.01 4.06 1.08 0.90 0.05 0.00

Maximum 503 3.60 1.03 5.13 0.11 5.90 1.21 1.91 0.36 0.01

Average 424 2.98 0.79 4.04 0.05 4.98 1.15 1.44 0.18 0.01

% content 38.72 10.07 50.62 0.59 64.02 14.9 18.81 2.25 0.02

(continued)