Preparation of Ground Water Quality Map under Rajiv Gandhi National Drinking Water Mission – Phase IV in Karnataka

drinking water

National Remote Sensing Centre (NRSC), ISRO, Govt. of India, in collaboration with partner institutions is preparing ground water quality maps using remote sensing and GIS technology under Rajiv Gandhi National Drinking Water Mission (RGNDWM) project. The project is being sponsored by the Department of Drinking Water Supply (DDWS), Ministry of Rural Development (MoRD). The KSRSAC has been entrusted with the work pertaining to the State of Karnataka

Objectives

The objective of ground water quality mapping is to create a spatial database on ground water quality using mainly the existing point data available with DDWS, MoRD. The output spatial data is to be in the form of an additional layer showing the spatial distribution of the quality of ground water. The ground water quality information is to be provided in terms of its suitability for human consumption, i.e.1) potable, 2) permissible and 3) non-potable as per the norms of the Bureau of Indian Standards (BIS).

Chemical parameters considered for mapping

There are many dissolved minerals and organic constituents present in ground water in various concentrations. Among them, the most common elements are pH, Total Hardness, Iron, Nitrate and Fluoride and the same are considered for mapping and analysis. Table 1 shows the threshold values used for classifying concentration of the elements as per BIS Specifications of 2003.

Table 1 Classification of chemical parameters as per BIS specifications

Sl. No

Chemical parameters

Desirable 

 Permissible

Non-potable

1

 pH 

6.5 to 8.5 

No Relaxation 

 <6.5 & >8.5

2

 Total Hardness – CaCO3 (mg/l)

<300

    300 to 600

>600

3

 Nitrate – NO3 (mg/l)

<45

 No Relaxation

 >45

4

 Fluoride - F(mg/l)

<1.0 

1.0 to 1.5  

 >1.5

5

Total Iron – Fe (mg/l)

<0.3

 0.3 to 1.0 

   >1.0

Summary of Work

As for pH, Belgaum and Shimoga districts are more affected; for Total Hardness Tumkur, Mandya and Belgaum districts; for Nitrates Mandya, Kolar and Davanagere districts and for Fluorides Chikkaballapur, Tumkur and Bellary districts are affected. The number of affected villages for various parameters of ground water in different districts is presented in Table 2.

Table 2 Number of problem villages in different districts in respect of chemical parameters

sl.no

District

Total no of villages selected

No of problem villages

pH

Total hardness

    Iron

Nitrate

Fluoride

1

 Bagalkote

 989 

126   

197

4

53

65

2

Bangalore Urban  

1089    

39    

199  

 82    

399  

 29

3

Bangalore Rural

944    

16    

103  

 8    

118    

18

4

Belgaum

1638    

185

544

204

89

95

5

 Bellary    

1228

19

159

5

183

489

6

Chamarajanagar    

1422

6

298

10

11

1

7

Chikballapur   

1875

81

201

30

232

689

8

Chikmagalur    

2150

219

118

22

12

16

9

Chitradurga    

1260

28

248

15

103

360

10

Dakshina Kannada    

1008

60

5

14

1

21

11

 Davanagere    

1317

119

461

13

442

272

12

 Dharwad   

506

34

62

2

47

3

13

 Gadag  

595

3

208

3

38

80

14

 Hassan   

2296

186

87

84

17

11

15

Haveri    

1190

1

263

15

5

6

16

Kodagu  

450

43

0

45

1

0

17

Kolar   

1624

0

401

7

647

289

18

 Koppal   

738

49

153

81

133

100

19

Mandya    

2057

14

688

269

767

244

20

 Mysore  

2449

1

298

30

114

20

21

 Shimoga   

1774

516

97

59

16

11

22

 Tumkur   

4294

41

704

298

359

689

23

 Udupi  

660

0

1

3

0

1

 

Project Status

Slum Free City Mapping of selected Cities in Karnataka
Integrated Resource Development Programme for Bellary district
Organizing and Maintaining the MUDA-GIS and Supporting GIS for Master Planning and Administration
Mapping of BMTC Assets and Developing GIS Applications
Coffee Plantation Acreage Estimation Using RS & GIS Techniques in Sakaleshpura Taluk, Hassan District, Karnataka.
Identification of suitable sites for dumping Municipal Solid Waste in the Urban Local Bodies of Karnataka
Mapping of Hassan town using Remote Sensing Method
Development of Web GIS and Geology, Mineral Atlas and Digital Processing of the Lease Applications
Mapping of BAMUL Milk Supply Routes and Distribution Outlets
National Wasteland Change Analysis
NRC - Land use/Land cover Change Analysis
Base Map of Bangalore Division for BESCOM
Karnataka Election 2018
Preparation of Ground Water Prospects Map under Rajiv Gandhi National Drinking Water Mission – Phase I in Karnataka
Preparation of Ground Water Quality Map under Rajiv Gandhi National Drinking Water Mission – Phase IV in Karnataka
Creation of Digital Land Record Database for the State of Karnataka (LRD)
National Urban Information System- Goa (NUIS)
Tank Information System for Karnataka
Space Based Information Support for Decentralized Planning (SIS-DP)
Database Creation and Updation for NMPT
Industrial Plot Information System Portal for KIADB
Land Resource Information System (LRIS) for Mysore District
Delineation of Forest boundaries in Village Maps as per Forest Working Plan
Updating of Network Assets of ESCOMS