Skip to main content

DRINKING WATER QUALITY STANDARDS


S.No

 

Parameters

 

Permissible limit

 

Maximum limit

1

Odor

Agreeable

Agreeable

2

Taste

Agreeable

Agreeable

3

pH

6.5-8.5

No relaxation

4

TDS(mg/l)

500

2000

5

Hardness (as CaCO3)

(mg/l)

200

600

6

Alkalinity (as CaCO3)

(mg/l)

200

600

7

Nitrate (mg/l)

45

No relaxation

8

Sulfate (mg/l)

200

400

9

Fluoride (mg/l)

1

1.5

10

Chloride (mg/l)

250

1000

11

Turbidity (NTU)

5

10

12

Arsenic (mg/l)

0.01

0.05

13

Copper (mg/l)

0.05

1.5

14

Cadmium (mg/l)

0.003

No relaxation

15

Chromium (mg/l)

0.05

No relaxation

16

Lead (mg/l)

0.01

No relaxation

17

Iron (mg/l)

0.3

No relaxation

18

Zinc (mg/l)

5

15

19

Fecal coliform (cfu)

0

0

20

E.Coli (cfu)

0

0

Drinking water quality standards

Water quality parameters and bis standards for various chemical and biological constituents. Drinking water IS 10500:2012

Comments

Post a Comment

Popular posts from this blog

METHYL ISOCYANATE (BHOPAL DISASTER CHEMICAL EQUATION )

Bhopal disaster was occurred by one simple chemical reaction in methyl isocyanate storage tank . (note-MIC-METHYL ISOCYANATE)  MIC is used for the production of carbamate pesticides and also rubber and adhesives. MIC is a colorless liquid and pungent order .    it's boiling point is 38.3 degree Celsius (100.9 F) approximately our body higher temperature .  MIC is reacted with water ,this leads to formation of 1,3 dimethyl urea and carbon dioxide with evolution of heat .  this reaction is continued, this leads to increases the temperature of MIC stored tank . at that temperature all MIC was transforming  liquid to gas form . slowly MIC gas was evolved out through the smoke Aerial tower . because of high molecular weight of the MIC and high denser than the air ,it starts spread lower feet to ground . this two things only kills the lacks of people .1) is reaction with water 2.) is high molecular weight of gas.
Post a Comment
Read more

Reduction of aromatic compounds(Birch reduction)

The reduction of aromatic compounds to 1.4-cyclohexadiene compounds in   presence of alkali metal liquid ammonia and an alcohol is called Birch reduction. A variety of aromatic compounds containing electron donating or electron withdrawing groups could be readily converted to the corresponding 1,4 cyclohexadiene derivatives. The regioselectivity towards the products in Birch reduction of substituted  aromatic compound depends on the nature of the substituent. For example, the  electron donating substituent such as alkyl or alkoxy group remains on the  unreduced carbon where as the electron withdrawing groups such as carboxylic  acid or primary amide remains on reduced carbon almost exclusively. The aldehydes and esters groups are in the electron donation side because  these are reduced to the corresponding alcohols in Birch condition before the  reduction of aromatic ring . The addition of one or two equivalent of  water ...
1 comment
Read more

CHEMISTRY OF BASIL AND IT'S MEDICINAL USES

  Scientific name:- Ocimum basilicum L Family:- lamiaceae The major organic chemical compound present in the basil is estragole.          estragole  Medicinal properties:- Antimicrobial Antispasmodic Medicinal uses:- Because of antibacterial properties of basil, it has been used as a antibacterial agent to kill the bacteria like E.coli bacteria and many other bacterias. It is Used as a antifungal agent against aspargillus and rhizocaticol It has been used in the treatment of gonorrhea, dysentery, chronic diarrhea, wound healing, pimples, skin infections and against different varieties of bacterial diseases. It is a very good source of beta carotene. Normally beta carotene help to prevent damage to the cells by free radicals. Magnesium is essential mineral present in basil which helps the heart and  blood vessels to relax, improving blood flow. Other nutrients and also found in basil include iron calcium potassium and vitamin c. Other applications:...
1 comment
Read more