Most of Bengaluru groundwater not potable

With Cauvery phase II delayed most of the city still depends on groundwater. But the presence of nitrate, iron and flouride above permissible levels is a worrying factor.

Over hundred families in Aatmajyothi Nagar in Nayandahalli are drinking toxic water, with nearly 12 times the acceptable nitrate levels, from borewells. "The permissible limit of nitrates per litre of water is 45 milligram. But in the underground water in Nayandahalli, the nitrate level is 554 milligrams per liter, which is very high. It can cause various health hazards," said M V Shashirekha, water researcher and former official of the mines and geology department.

Pic: Sankar C G

There is a further shortage of safe drinking water due to delay in the completion of the Cauvery Fourth Stage Second Phase water supply project, leaving people with little choice but to drink contaminated groundwater.

Residents complain that protests have not made any difference. "We protested in front of the BWSSB office in 2005 as the borewell water we have been consuming causes joint pain, vomiting, skin problems and other health hazards," said Seethamma, a resident of Aatmajyothi Nagar.

The BWSSB installed pipes in the area in 2006 with an assurance of immediate water connection, but the residents are yet to receive drinking water supply.

Test results from various localities


Nitrate, Iron and Flouride levels

Permissible limit

Sanjay Gandhi Nagar and Old Yelahanka

335 mg nitrate / litre

45 mg / litre


5.32 mg flouride / litre

1.5 mg / litre


4.49 mg flouride / litre

1.5 mg / litre

Kariammana Agrahara

48.5 mg iron / litre

5 mg / litre


39.5 mg iron / litre

5 mg / litre

Study finds high nitrate levels

The situation in Aatmajyothi Nagar is not unusual in Bangalore. A recent study done by Shashirekha of various parts of the city revealed excessive amounts of nitrate, fluoride and iron in groundwater.

The places of study included , Anjananagar, Bellandur, Bidarahalli, Chatram Road, HBS Layout, Hoodi, Kariammana Agrahara, Nagasandra, Nayandahalli, Old Yelahanka, Sanjay Gandhi Nagar, Santhammanahalli and Yeshwantpur.

"All the people here have joint pains. Doctors are saying it is because of adulterated water," said Manjunath from Yeshwantpur. "If we keep the water overnight, a white coating appears on it," he added.

BWSSB says wait for Cauvery 4th phase

"We can provide water to them from Cauvery Fourth Stage Second Phase. Because of some technical issues, the work got delayed," said Yashanth B, junior engineer at BWSSB. "We will finish the work soon and will provide water supply in Aatmajyothi Nagar and in other places by December."

This article comes to Citizen Matters as part of an arrangement with Indian Institute of Journalism and New Media (IIJNM). Versions of this article originally appeared in The Oberver and



  1. Soundcloud Reposts says:

    I couldn’t resist commenting. Well written!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Similar Story

Lok Sabha elections 2024: South Delhi — Know your constituency and candidates

Ramvir Singh Bidhuri of the BJP is contesting the South Delhi seat in place of sitting MP Ramesh Bidhuri. Who is he up against?

About the constituency Established in 1966, South Delhi Constituency is Delhi’s fourth largest constituency in terms of number of voters and is made up of Bijwasan, Palam, Mehrauli, Chhatarpur, Deoli (SC), Ambedkar Nagar (SC), Sangam Vihar, Kalkaji, Tughlakabad and Badarpur. The villages are largely dominated by the Gujjar community. It’s an upmarket area and is often referred to as the financial capital of the state. As of January 2024, the constituency had around 22.21 lakh voters, including roughly 12.34 lakh men and 9.86 lakh women, many of whom live in the urban villages or unauthorised colonies. This constituency had BJP’s…

Similar Story

Lok Sabha elections 2024: New Delhi — Know your constituency and candidates

A snapshot of New Delhi constituency with candidate profiles and affidavits, key issues of the constituency, past elections and more.

Table of contentsMap of the constituencyAt a glance – New Delhi Parliamentary ConstituencyFind your polling boothPast election resultsIncumbent MP: Meenakshi Lekhi, BJPOnline presenceCriminal casesAssets and liabilities declared in 2019Positions heldPerformance in ParliamentMPLAD funds utilisationCandidates contesting in 2024Key issues in New Delhi Lok Sabha constituencyKey candidates in the newsAlso read: New Delhi Lok Sabha constituency which is Delhi’s oldest constituency, comprises the following Vidhan Sabha segments: Karol Bagh, Patel Nagar, Moti Nagar, Delhi Cantonment, Rajinder Nagar, New Delhi, Kasturba Nagar, Malviya Nagar, RK Puram and Greater Kailash. This constituency houses several prestigious institutions like Parliament House, the Supreme Court, ministries and…