No

Parameter

CPHEEO

BIS - 1983

BIS - 1991

WHO

1.

Colour Pt/Co Scale

25

50

25

15

2.

Turbidity NTU

10

25

10

5

3.

Total Dissolved solids  mg/L.

1500

3000

2000

1000

4.

pH

6.5 - 9.2

9.2 - 6.5

6.5 - 8.5

8.5 - 6.5

5.

Alkalinity (as CaCO3) mg/L.

---

---

600

---

6.

Total hardness (as CaCO3) mg/L.

600

600

600

500

7.

Calcium(as Ca) mg/L.

200

200

200

---

8.

Magnesium (as Mg) mg/L.

150

100

---

---

9.

Sodium (as Na) mg/L.

---

---

---

200

10.

Iron(as Fe) mg/L. 

1.0

1.0

1.0

0.3

11.

Manganese (as Mn) mg/L.

0.5

0.5

0.3

0.1

12.

Chloride (as Cl) mg/L.

1000

1000

1000

250

13.

Fluoride (as F) mg/L.

1.5

1.5

1.5

1.5

14.

Sulphate (as SO4) mg/L.

400

400

400

400

15.

Nitrate (as NO3) mg/L.

45

45

100

45

16.

Copper (as Cu) mg/L.

1.5

1.5

1.5

1.0

17.

Cadmium (as Cd) mg/L.

0.01

0.01

0.01

0.01

18.

Selenium (as Se) mg/L.

0.01

0.01

0.01

0.01

19.

Mercury (as Hg) mg/L.

0.001

0.001

0.001

0.001

20.

Arsenic (as As) mg/L.

0.05

0.05

0.05

0.05

21.

Lead (as Pb) mg/L.

0.1

0.1

0.05

0.05

22.

Zinc (as Zn) mg/L.

15

15

15

5

23.

Chromium (as Cr) mg/L.

0.05

0.05

0.05

0.05

24.

Cyanide (as CN) mg/L.

0.05

0.05

0.05

0.01

25.

Anionic Detergents (as MBAS) mg/L.

1.0

1.0

1.0

---

26.

Phenolic compounds mg/L.

0.002

0.002

0.002

---

27.

Mineral oil mg/L.

0.03

0.03

0.03

---

28.

Pesticides mg/L.

---

---

0.001

---

29.

Free Chlorine mg/L

---

0.2

0.2

---

30.

Aluminium mg/L.

---

---

0.2

0.2

31.

Boron mg/L.

---

---

5

---

32.

Alpha emitters Bq/L

3

0.1

0.1

0.1

33.

Beta emitters Bq/L.

30

0.1

0.1

0.1

34.

Feccal coliform Counts/mL

0

0

0

0

35.

Protozoa

---

Nil

Nil

Nil