Press Esc to close
Friday 29 July 2016
News updated at 1:46 AM IST
Weather
Max: 29.4°C
Min : 20.7°C
In Bengaluru
Sunny day

Bangalore's ground water has high radon content

New Delhi, Aug 29, 2013, DH News Service

Traces of radon in high levels could directly cause stomach, lung cancer

File Image: For representational purpose

A survey by Central Ground Water Board (CGWB) has revealed that Bangalore city’s ground water contains high level of radioactive gas radon.

The CGWB, under the Ministry of Water Resources, said all the samples collected from Bangalore city for the survey had high radon content exceeding 11.1 Bacquerel per litre, according to the maximum permissible limit determined by the US Environmental Protection Agency.

The CGWB collected around 80 samples from various parts of southern Karnataka, including 30 samples from Bangalore city, all of which had high presence of radioactive gas radon, said union minister for water Harish Rawat in his written reply to the Rajya Sabha on Thursday.

Thirty-six out of the total 39 samples collected from Tumkur district and one out of seven samples collected from Chamarajnagar district also recorded high radon content.

However, test on borewell water taken from Mysore showed that radon content was within the permissible limit in the district. A carcinogenic substance, traces of radon in high levels could directly cause stomach and lung cancer, according to experts.  The permissible level of radon is 11.83 Bq/litre. Levels of radon in Bangalore’s ground water is estimated between 56 Bq/l and 1000 Bq/l. “Radon contamination, geogenic in nature, above permissible limit is generally present in freshly pumped water”, said the Minister in his reply.

Radon has a life of only 3.8 days, as its concentration changes significantly on abstraction, aeration, storage and boiling.

Hence, groundwater pumped from borewells and stored in overhead tanks is safe for consumption. 

The radon gas escapes into the atmosphere drastically reducing its concentration in water, making it safe for drinking.


Go to Top

Photo Gallery
Jayalalithaa presents a primary membership card to a newly joined party worker...

Jayalalithaa presents a primary membership card to a newly joined party worker...

Locals try to douse a car godown that caught fire at Panagarh in Burdwan district of West Bengal...

Locals try to douse a car godown that caught fire at Panagarh in Burdwan district of West Bengal...

A policeman fires teargas shell to disperse protesters during a clash in Srinagar...

A policeman fires teargas shell to disperse protesters during a clash in Srinagar...

School students take part in an awareness event on the eve of International Tiger Day...

School students take part in an awareness event on the eve of International Tiger Day...

A demonstrator holds a placard during a protest organised by a Muslim minority forum...

A demonstrator holds a placard during a protest organised by a Muslim minority forum...

Cattle move through flood water at Dhekiabari Village in Kamrup district of Assam...

Cattle move through flood water at Dhekiabari Village in Kamrup district of Assam...

RJD Chief Lalu Prasad looking at his waterlogged residence after a press conference in Patna...

RJD Chief Lalu Prasad looking at his waterlogged residence after a press conference in Patna...

Villagers move to safe place in a boat from the flooded Panikhiti area in Kamrup district of Assam..

Villagers move to safe place in a boat from the flooded Panikhiti area in Kamrup district of Assam..

Varun Dhawan, John Abraham and Jacqueline Fernandez during promotion of their upcoming movie...

Varun Dhawan, John Abraham and Jacqueline Fernandez during promotion of their upcoming movie...

A man dives to catch the ball during fotball practice in a public park in Kolkata...

A man dives to catch the ball during fotball practice in a public park in Kolkata...

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bengaluru - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523