Sl. No

Criteria

Parameter Range

Ranking

Weight ages

1

pH*

7 - 7.5

1

20%

7.5 - 8.5

2

˃8.5

3

2

Electrical conductivity (µS/cm)*

250 - 750

1

15%

750 - 1000

2

˃1000

3

3

Total Dissolved Solids (mg/l)*

500 - 750

1

15%

750 - 1000

2

˃1000

3

4

Total Suspended Solids (mg/l)*

50 - 100

1

15%

100 - 150

2

˃150

3

5

SAR (unitless)**

≤3

1

20%

˃3

3

6

Ammonia (mg/l)*

≤0.2

1

5%

˃0.2

3

7

Calcium (mg/l)**

75 - 200

1

˃200

3

8

Nitrate (mg/l)*

≤50

1

10%

˃50

3

9

Bicarbonate (mg/l)**

100 - 500

1

˃500

3