Water Quality Standards

  Drinking Water Quality Standard (IS 10500)


 

  Health Effects of Water Pollutants


Parameter

BIS Guideline value (maximum allowable)

General & Health effect

Total dissolved solids

2000

Undesirable taste; gastro intestinal irritations; corrosion or incrustation

pH

6.5-8.5

Affects mucous membrane; bitter taste; corrosion; affects aquatic life

Alkalinity

600

Boiled rice turns yellowish

Hardness

600

Poor lathering with soap; deterioration of the quality of clothes; scale forming; skin irritation; boiled meat and food become poor in quality

Calcium

200

Poor lathering and deterioration of the quality of clothes; incrustation in pipes; scale formation

Magnesium

100

Poor lathering and deterioration of clothes; with sulfate laxative

Iron

0.3

Poor or sometimes bitter taste, color and turbidity; staining of clothes materials; iron bacteria causing slime

Manganese

0.3

Poor taste, color and turbidity; staining; black slime

 

Parameter

BIS Guideline value (maximum allowable)

General & Health effect

Aluminum

0.2

Neurological disorders; Alzheimer's disease

Copper

1.5

Liver damage; mucosal irritation, renal damage and depression; restricts growth of aquatic plants

Zinc

15

Astringent taste; opalescence in water; gastro intestinal irritation; vomiting, dehydration, abdominal pain, nausea and dizziness

Ammonia

-

Indicates pollution; growth of algae

Nitrite

-

Forms nitrosoamines which are carcinogenic

Nitrate

45

Blue baby disease (methemoglobineamia); algal growth

Sulfate

400

Taste affected; laxative effect; gastro intestinal irritation

Chloride

1000

Taste affected; corrosive

Fluoride

1.5

Dental and skeletal fluorosis; non-skeletal

 

Parameter

BIS Guideline value (maximum allowable)

General & Health effect

Phosphate

-

Algal growth

Arsenic

0.05

Toxic; bio-accumulation; central nervous system affected; carcinogenic

Mercury

0.001

Highly toxic; causes 'minamata' disease-neurological impairment and renal disturbances; mutagenic

Cadmium

0.003

Highly toxic; causes 'itai-itai' disease-painful rheumatic condition; cardio vascular system affected; gastro intestinal upsets and hyper tension

Lead

0.01

Causes plumbism-tiredness, lassitudes, abdominal discomfort, irritability, anaemia; bio-accumulation; impaired neurological and motor development, and damage to kidneys

Chromium

0.05

Carcinogenic; ulcerations, respiratory problems and skin complaints

Pesticide

Vary for different pesticide

Affects central nervous system

Detergent

0.2 and 1.0

Undesirable foaming

 

Prev  

Top