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Rebuilding an urban water culture - Avinash Krishnamurthy

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Our open wells, borewells, and aquifers

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Rebuilding an urban water culture - Avinash Krishnamurthy

  1. 1. WaterOur openwells, borewells and aquifers Rebuilding an urban water culture Avinash Krishnamurthy Biome Environmental Trust Presented for ADDA Water Workshop III
  2. 2. Bangalore – living history (100 years old)
  3. 3. Groundwater : Wells & Borewells
  4. 4. Wells : Weathered and fractured zones
  5. 5. Inside a Borewell ( Youtube clip: Channel Zenrainman , Borewell – workings, fissures and water in hard rock ) Ask for Borewell logs : See FAQ in http://groundwaters.in
  6. 6. Borewell : Water Quality TDS : 400-500 (Within desirable Limits of BIS 10500 2012) Desirable : < 500 Permissible : 2000
  7. 7. Recharging directly into borewells Need to be very very careful About water quality
  8. 8. The pit has reach the silt layer Pit and concrete rings Placing of the rings Recharge Well :The making of a recharge well
  9. 9. Recharge wells details Silt and leaves trap in a stormwater drain Covers : grilled or perforated RCC
  10. 10. Rainwater sent for recharge Recharging a bore well Outlet pipe in recharge well
  11. 11. How much water do I use ? Use Litres/person Drinking 3 Cooking 4 Bathing 20 Flushing 40 Washing-clothes 25 Washing Utensils 20 Gardening 23 Total 135 Real Consumption range : from 50 to 300 liters per person per day National Town planning Norms : Urban : 135 Lpcd Rural (Karnataka) : 55 Lpcd
  12. 12. Multi sourcing : Increasing urban reality (Case of Bangalore) Piped Water : Cauvery River • Unreliable/erratic ? • Scarcity • Infrastructure growth • Too cheap • 100km from B’lore • 500m below B’lore Ground Water : Borewell • Drying up • Bad quality Ground Water : Tanker Water • Availability ? • Quality ? • Cost ? Bottled Water •Groundwater
  13. 13. Multi sourcing : Increasing urban reality (Case of Bangalore) Piped Water : Cauvery River • Unreliable/erratic ? • Scarcity • Infrastructure growth • Too cheap • 100km from B’lore • 500m below B’lore Ground Water : Borewell • Drying up • Bad quality Ground Water : Tanker Water • Availability ? • Quality ? • Cost ? Bottled Water •Groundwater Demand management Rainwater and Wastewater reuse Recharge Wells Revived Open wells
  14. 14. Bhoganandeeshwara Temple KalyaniLegend has it that this is the source of the Dakshina Pinakini
  15. 15. Bhoganandeeshwara Temple KalyaniLegend has it that this is the source of the Dakshina Pinakini A Million Recharge Wells for Bengaluru
  16. 16. Plumbers, well diggers………
  17. 17. Resources www.bengaluru.urbanwaters.in
  18. 18. http://tiny.cc/wfjb4y BANGALORE WELL MAPPING-BIOME
  19. 19. HOW TO ADD YOUR WELLS AND WELLS YOU COME ACROSS IN BANGALORE Access the Google form at http://tiny.cc/izjb4y and fill the questionnaire to get your wells added to the Bangalore Well Mapping or mail details at rsshivanand@gmail.com
  20. 20. Biome Environmental Trust Biome Environmental Solutions Pvt Ltd Avinash Krishnamurthy 9341324692 avinash@biome-solutions.com www.biometrust.org www.biome-solutions.com www.bengaluru.urbanwaters.in
  21. 21. Karnataka GW Act 2011 • Karnataka GW (Regulation, Control of development and management) Act 2011, rules 2012 • Groundwater Authorities Created at District Level (GWA). Areas where groundwater overexploited are “notified” and GWA regulates development of groundwater in these areas. • Entire Bangalore – Urban and Rural – notified. • BWSSB an integral part of this authority for Bangalore Urban. BWSSB also Borewell registering authority in Bangalore Urban • All existing borewells to be registered (Forms available online – details in Biometrust.blogspot.in, “I want to dig a borewell, how do I go about with this?”) • New borewells need a permit. (Forms available online – details in Biometrust.blogspot.in, “I want to dig a borewell, how do I go about with this?”) • Permit will be provided or rejected by GWA with or without conditions. • Borewell can be dug after permissions from a registered Drilling agency (All drilling agencies need to be registered with the GWA) • Drilling agency to submit a report to GWA on the drilling of borewells and relevant data to the authority on a monthly basis • Borewell users to put a meter on the borewell and submit usage data on a monthly basis.
  22. 22. Registered borewells: 319211 (July 2016) Actual no of borewells : 400,000 ++(+++?)

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