WATER QUALITY CHECK – (BIS)BUREAU OF INDIAN STANDARDS SPECIFICATION OR PARAMETERS


 

Parameter BIS Guidelinevalue  

(maximum allowable)

Maximum Permitted

General & Health effect

If it exceeds the parameters, the following side effects are felt

 

 

Total dissolved solids

 

 

2000 mg/L

 

 

Undesirable taste; gastro intestinal irritations; corrosion or incrustation

 

PH

 

6.5-8.5

 

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

 

   Alkalinity

 

600 mg/L

Boiled rice turns yellowish
 

Hardness

 

600 mg/L

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

 

1.0

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
 

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

 

100

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 manifestations
 

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

 

0.01

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

Lead

 

0.05

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

 

0.001

Affects central nervous system
 

Detergent

 

 

Undesirable foaming

 

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