The inflow of Thippagondanahalli Reservoir contains more industrial waste than sewage
'BLACK WATER' for Bengaluru city to drink
Kere Manjunath ಕೆರೆ ಮಂಜುನಾಥ್
BENGALURU: Drinking water planned to be supplied to the city after 11 years from Thippagondanahalli Reservoir is not fit for citizens' consumption. The 'DARK BLACK WATER' flows into the reservoir and no treatment can clean it.
Industries encroaching on the river channel along with the buffer zone in the TG Halli watershed are discharging chemical waste into the river. Thus, the Environment Management and Policy Research Institute (EMPRI) of the Forest Department has reported in 2015 that the water of TG Halli Reservoir is unfit for any use (E- Category) along with the laboratory results.
After this report, industrial and commercial-residential areas are highly zoned and adjacent to the buffer zone. From this, the 'dark black water flow' can still be seen between Hesaraghatta and Thippagondanahalli Reservoir. BWSSB is working to treat such water with high-tech technology and supply it as drinking water to the city at a cost of ₹300 crore.
From Peenya to Dasanpur industrial and urbanized areas, sewage water, chemical waste is directly entering the river flow. Ground water is also polluted in this part. Along with solid waste, granite slurry, garment dye, and informal dyeing and electroplating small scale industries are directly entering the river basin.
Coliform bacteria, which are very harmful to the human body, are very high in this flow. The coliform content should be zero per 100 mL, here it is 50 mpn/100ML. Experts are of the opinion that even if all this contaminated water is treated, it cannot be made drinkable.
Regarding the water quality, the State Pollution Control Board has released the August 2023 report and it has been stated that the water in most of the lakes of Thippagondanahalli basin is E-class. That is, this water is not fit for any use. This water is joining Thippagondanahalli reservoir through Arkavathi river.
Waste from which village to the river?
Aluru, Heggadevanpura, Makali, Madanayakanahalli, Kadaranahalli, Goudahalli, Kammasandra, Bettahalli, Kittanahalli, Gattisiddanahalli, Giddenahalli; Sewage water
Harokyatanahalli, Ravottanahalli, Gangenahalli; Sewage water with foam
Vartur; Sewage water with solid waste, poultry waste from around the main road of Tavarekere, Sondekoppa villages.
Nagasandra; Sewage water with waste from agricultural activity
Jogerahalli; Horticulture crop on encroached land, drainage water with agricultural waste
Doddakarenahalli; Medical wastes including solid waste, cotton, injection bottles, syringes and their packages are entering the river.
Reason for lack of water in the river
* Encroachment of water bodies and their canals
* By closing the second and third order channels of the rivers, the land use itself has been changed.
* Due to encroachment of industries on river basins, surface water and ground water has decreased.
* Groundwater has been overexploited for residential and agricultural activities.
* Water availability is reduced without maintaining lake series.
Land use change
* Villages in Zone-3 and Zone-4 have excessive construction activities, including buildings, Layouts, warehouses etc.
* Agricultural area in zone 1, 3 and 4 – Layouts, Road, Quarry, Warehouse converted into buildings.
* Urbanization activities have taken place in zone-3, and Layouts, warehouses, houses, commercial buildings, industries have been built in the Arkavati river.
* A large number of warehouses have been constructed under the Gramin Bhandara scheme in the villages around the National Highway-4 on the Arkavati river and NH-48 on the Kumudvati river.
Atleast Save the reduced one?
The buffer zone in TG Halli watershed set in 2003 was not followed by anyone. Unauthorized constructions are more common. The question is whether the buffer zone ordered to be reduced in 2019 will be saved. There is an order that there should be no construction, dirt and waste should not come out in the designated buffer zone. But, till now only chemical waste and sewage water are flowing directly. If only the buffer zone is implemented with a reduced order, the industrial and commercial areas will officially increase further. The sewage flows even more.
Nirmala Gowda, paani.earth
Slow-poison for people!
Industrial waste cannot be completely eliminated. If people get drinking water from Thippagondanahalli reservoir where such water is flowing, it will become 'slow-poison'. This is just a plan to kill people by slowly ruining their health. There are all kinds of 'red industries' in the major industrial areas and all their chemical waste is getting into the Thippagondanahalli Reservoir. Karihoba's village lake is a black water hole as the name suggests, which fills up and joins the Arkavati river. Despite complaints about this for years, no one, including the State Pollution Control Board, has taken any action.
Gowdaiah, environmental activist
'Buffer zone change: I didn't know'
H.D.Kumaraswamy, who was the Chief Minister in 2019, said that 'I did not have any idea that the order has been issued reducing the buffer zone of Thippagondanahalli basin.'
Satish Jarakiholi who was the Forest Minister, G.Parameshwar who was the Deputy Chief Minister and Bangalore Development Minister. reduced the buffer zone and caused the order to be issued. As Chief Minister, this did not come to my notice. I did not consent to this in the cabinet or in any meeting," Kumaraswamy commented.
The Urban Development Department had issued an order on July 20, 2019 reducing the buffer zone from 1 km to 500 meters in the Thippagondanahalli watershed.
The reasons why Arkavati river is going due?
- Overexploitation of groundwater
- Pit from quarries
- Blockage of canals
- Drainage encroachment
- Sand mining
- Eucalyptus plantation
- Waste flows from industries
- Sewage water of Bangalore city
- Improper disposal of solid waste
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