GOVERNMENT OF INDIA
Ministry of Water Resources 

RAJYA SABHA
UNSTARRED QUESTION NO. 764
ANSWERED ON MARCH 04, 2013

QUESTION
Contamination of Ground Water in Karnataka

764. SHRI RAJEEV CHANDRASEKHAR: 

Will the Minister of WATER RESOURCES be pleased to state:

(a)   whether any survey by any Government agency has been conducted in Karnataka about the contamination of ground water in the State;

(b)   if so, the details thereof and the outcome of the survey, district-wise; and

(c)    what corrective steps have been taken or proposed to be taken to address this problem in the State?

ANSWER
THE MINISTER OF WATER RESOURCES
(SHRI HARISH RAWAT)

(a) Central Ground Water Board (CGWB) under the Ministry of Water Resources, Government of India and the Departments of Mines & Geology and the Panchayati Raj & Engineering under the Government of Karnataka have conducted surveys about contamination of ground water in the State.

(b) Chemical analysis of Water samples collected as a part of ground water monitoring carried out by CGWB indicated presence of excess Nitrate, Fluoride, Salinity and Radon above the maximum permissible limit in ground water. District-wise details are given in Annexure. The study conducted by Rural Development & Panchayati Raj Department, Karnataka also revealed presence of Arsenic above the maximum permissible limit of more than 0.05mg/l in 76 villages. Besides, out of 147 samples analysed for arsenic in Shorapur Taluka of Gulbarga district, in 25 samples arsenic was found beyond permissible limits.

(c) Since in situ treatment of polluted aquifers is difficult, remedial measures are concentrated on providing alternate source of water supply. CGWB under the Ministry of Water Resources assists the State Government in identifying aquifers which are free from contaminants. Besides this, State Government of Karnataka has informed that it has taken up 359 Multi Villages Schemes wherever surface water is available as alternate source. Water treatment plants are also being installed to provide safe potable drinking water at a rate of 10 litre per capita per day (lpcd) wherever surface water is not available.

ANNEXURE 

Annexure referred to in reply to Rajya Sabha Admitted Unstarred Question No. 764, answered on 04.03.2013 regarding "Contamination of Groundwater in Karnataka"

 District wise ground water samples analysed for Salinity, Nitrate, Fluoride & Radon contamination. 

District

Salinity (EC)

Nitrate

Iron

Fluoride

Radon

Samples

analysed

Above

Permissible

limit

%

Samples

analysed

Above

Permissible

limit

%

Samples

analysed

Above

Permissible

limit

%

Samples

analysed

Above

Permissible

limit

%

Samples

analysed

Above

Permissible

limit

%

Bagalkot

290

55

19

186

111

60

23

6

26

224

41

18

---

---

---

Bangalore

Rural

218

5

2

153

69

45

24 (including Ramnagaram)

3

13

172

3

2

---

---

---

Bangalore Urban

142

13

9

105

 54

51

123

0

0

30

30

100

Belgaum

833

80

10

546

225

41

67

19

28

635

13

2

---

---

--

Bellary

325

77

24

238

162

68

16

1

6

260

59

23

---

---

--

Bidar

311

0

0

205

72

35

15

---

--

260

7

3

---

---

--

Bijapur

458

50

11

307

178

58

35

2

6

365

57

16

---

---

--

Chamarajnagar

226

12

5

157

71

45

6

---

--

190

8

4

7

1

14

Chikballapur

350

33

9

244

133

55

---

---

--

288

34

12

---

---

--

Chikmagalur

373

17

5

168

53

32

28

6

21

227

1

0

---

---

--

Chitradurga

330

57

17

220

122

55

15

8

53

238

53

22

---

---

--

Dakshina Kannada

307

1

0

53

1

2

29

8

28

179

1

1

---

---

--

Davangere

252

15

6

187

98

52

12

8

67

213

40

19

---

---

--

Dharwad

306

92

30

173

91

53

15

---

--

236

10

4

---

---

--

Gadag

169

42

25

106

66

62

17

---

--

115

20

17

---

---

--

Gulbarga

614

15

2

440

190

43

65(including Yadgir)

15

--

499

64

13

---

---

--

Hassan

456

4

1

306

146

48

35

6

17

350

4

1

---

---

--

Haveri

187

29

16

110

60

55

15

---

--

125

10

8

---

---

--

Kodagu

214

1

0

104

33

32

20

1

5

135

0

0

---

---

--

Kolar

431

33

8

302

149

49

12 (including chikballapur)

2

--

382

44

12

---

---

--

Koppal

267

37

14

217

138

64

31

7

23

246

70

28

---

---

--

Mandya

362

39

11

252

155

62

24

---

--

281

22

8

---

---

--

Mysore

374

22

6

267

139

52

27

2

7

307

7

2

4

0

0

Raichur

341

74

22

261

140

54

36

12

33

307

104

34

---

---

--

Ramanagaram

256

10

4

191

91

48

Included with Bangalore

---

--

219

9

4

---

---

--

Shimoga

336

8

2

183

53

29

30

1

3

225

4

2

---

---

--

Tumkur

448

55

12

290

152

52

19

11

58

349

58

17

22

22

100

Udupi

265

18

7

59

10

17

22

3

14

144

0

0

---

---

--

Uttara Kannada

505

2

0

190

5

3

24

4

17

281

1

0

---

---

--

Yadgir

277

26

9

203

94

46

---

---

--

218

59

27

---

---

--

Total

10223

922

9

6423

3061

48

662

125

21

7793

803

10

63

53

84