This document discusses the importance of digging recharge wells to manage groundwater sustainably in Bangalore. It notes that as the city has become more built up, there is increased surface runoff and flooding but less space for water to naturally percolate into the groundwater. Recharge wells help channel runoff more effectively into aquifers. They can help tide the city over increasingly frequent drought periods. The document provides guidance on locating, designing, digging, and maintaining recharge wells for homes, apartments, layouts, and public spaces. It includes the legal requirements for recharge wells, typical costs, and contact information for well diggers.
Due to the ever-increasing population, surface water is not enough to meet all the demands and the dependence automatically goes to ground water that drastically leading to a constant depletion of ground water level causing the wells and tube wells to dry up. To enhance the availability of groundwater at specific places and times and utilize rainwater for sustainable development.
The harvesting of rainwater simply involves the collection of water from surfaces on which rain falls, and subsequently storing this water for later use. Normally water is collected from the roofs of buildings and stored in rainwater tanks.
Traditional water harvesting in Central Highlands of India.The presentation shows various methods employed for water conservation and recharging in Central India (Rajasthan, MadhyaPradesh,Chhattisgadh)
Due to the ever-increasing population, surface water is not enough to meet all the demands and the dependence automatically goes to ground water that drastically leading to a constant depletion of ground water level causing the wells and tube wells to dry up. To enhance the availability of groundwater at specific places and times and utilize rainwater for sustainable development.
The harvesting of rainwater simply involves the collection of water from surfaces on which rain falls, and subsequently storing this water for later use. Normally water is collected from the roofs of buildings and stored in rainwater tanks.
Traditional water harvesting in Central Highlands of India.The presentation shows various methods employed for water conservation and recharging in Central India (Rajasthan, MadhyaPradesh,Chhattisgadh)
Introduction
• Water is essential for all life of forms on earth-including human, animal and vegetation.
• It is therefore important that adequate supplies of water be developed to sustain such life
• Where there is no surface water, where groundwater is deep or inaccessible due to hard ground conditions, or where it is too salty, acidic or otherwise unpleasant or unfit to drink, another source must be sought.
• In areas that have regular rainfall, the most appropriate alternative is the collection of rainwater, called rainwater harvesting .
Water issues of Mumbai city from the perspective of the local municipal authority in charges of supply and distribution to the city. Challenges and solutions to meeting the increasing demand for water and dealing with distribution losses among other problems.
Rain water harvesting is a technique of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting.
give you the information about the components of irrigation system.why Dam, barrage, head works, canal, major canal ,minor canal, water courses and field channels are made and how these works, all these are discussed in this
storm water
rain water harvesting
shoratge of water
advantages
road surface run off
open drains
plans
drawing
pictures
storm water program
design consideration
Introduction
• Water is essential for all life of forms on earth-including human, animal and vegetation.
• It is therefore important that adequate supplies of water be developed to sustain such life
• Where there is no surface water, where groundwater is deep or inaccessible due to hard ground conditions, or where it is too salty, acidic or otherwise unpleasant or unfit to drink, another source must be sought.
• In areas that have regular rainfall, the most appropriate alternative is the collection of rainwater, called rainwater harvesting .
Water issues of Mumbai city from the perspective of the local municipal authority in charges of supply and distribution to the city. Challenges and solutions to meeting the increasing demand for water and dealing with distribution losses among other problems.
Rain water harvesting is a technique of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting.
give you the information about the components of irrigation system.why Dam, barrage, head works, canal, major canal ,minor canal, water courses and field channels are made and how these works, all these are discussed in this
storm water
rain water harvesting
shoratge of water
advantages
road surface run off
open drains
plans
drawing
pictures
storm water program
design consideration
Urban rainwater harvesting systems promises and challenges in Bangalorezenrain man
How rainwater harvesting is being implemented with persuasion and the law in Bangalore to supplement water requirements of a growing metropolis.The city utility is championing the initiative. This will reduce the demand on the piped water supply..
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It describes necessity of rain water harvesting, what is the solution, methods and techniques of rain water harvesting.
Additional it also includes Packaged water treatment, its necessity and working.
Project Aware - Rain Gardens
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Organic Edible Schoolyards & Gardening with Children =
http://scribd.com/doc/239851214 ~
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City Chickens for your Organic School Garden =
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Simple Square Foot Gardening for Schools - Teacher Guide =
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A lecture on 18th March 2017 on issues around 'Water and Children' in the Child Rights Circle monthly lecture series at Vijaya Teachers Training College, Jayangara, Bengaluru. The third lecture in the series.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...Joshua Orris
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Climate Change All over the World .pptxsairaanwer024
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Epcon is One of the World's leading Manufacturing Companies.EpconLP
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...Joshua Orris
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
different Modes of Insect Plant InteractionArchita Das
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Top 8 Strategies for Effective Sustainable Waste Management.pdfJhon Wick
Discover top strategies for effective sustainable waste management, including product removal and product destruction. Learn how to reduce, reuse, recycle, compost, implement waste segregation, and explore innovative technologies for a greener future.
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This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
6. MONTH DAYS QUANTITY (mm)
JAN 0.2 2.70
FEB 0.5 7.20
MAR 0.4 4.40
APR 3.0 46.30
MAY 7.0 119.60
JUN 6.4 80.80
JUL 8.3 110.20
AUG 10.0 137.00
SEP 9.3 194.80
OCT 9.0 180.40
NOV 4.0 64.50
DEC 1.7 22.10
TOTAL 59.8 970.00
Rainfall pattern in Bangalore
30 years data
8. Why we should dig recharge
wells
• Surface water run-off typically seeps into the ground through
natural cracks in the earth then into the aquifer.
• This natural percolation takes time, and only a small percentage
of the surface water actually reaches the aquifer. (Surface water
also contributes more to soil moisture than groundwater does,
and some is lost to evapotranspiration).
• As long as the natural environment and habitat is preserved,
this slow process is fine, but our urban spaces today are very
built up, there’s runoff (and more flooding), and fewer spaces
for the water to percolate through into the ground.
• Recharge wells help channel this run-off more effectively and
more quickly into the aquifer.
• In the long run these wells could help us tide over the
increasingly frequent drought periods
• In certain areas we have observed that water returns to
the well over time
9. THE LAW !!
• Also, it’s the law! If you live in Bangalore within
BBMP’s jurisdiction or have a BWSSB connection,
you need to provide for a recharge well:
• If your property has a built up area exceeding
100m²/1100 ft² on sital area of 200m²/2150 ft²
(BBMP) or a built up area of 1200 ft² and above on
sital area of 2400 ft² and above (BWSSB) you need
a recharge well of a minimum of 1m diametre and
6m depth (3 ft dia and 18 ft depth)
BBMP Bye Laws 2003 (Bye-law 32) and BWSSB Amendment Act (2009)
10. BWSSB Act
• 2400sqft and above (existing homes)
• 1200sqft and above (new homes)
• 20 litres of storage/recharge per sqm of rooftop
• 10 litres of recharge per sqm of non rooftop
30. Will my recharge well directly
benefit me?
Mr R.Balasubramaniyan lives
in Vidyaranyapura. His 40’
deep well, dug in 1995, ran
dry 2001. Unlike his
neighbours, he didn’t fill his
well up. One day, with a little
help Bala sir spent around
5000 rupees and installed
rainwater harvesting in his
house. This recharge
measure has brought back
water to his open well and
now he uses it exclusively
without recourse to the city
water network.
Click on the image to watch
the video or click here:
https://www.youtube.com/wa
tch?v=C4lwi-zUlZc
32. Rainbow Drive is a 36 acre
layout in Sarjapur, south east
Bangalore. In a context of fast
depleting borewell yields and
falling groundwater levels this
layout invested in sustainable
water management by
conserving, reusing and
recycling rainwater. They have
built over 200 recharge wells
and all their excess rainwater
is channelled towards recharge
wells, effectively improving the
groundwater table.
33. How do I dig a recharge well?
1/2
• You’ll need a plumber and a well-digger
• For residences, a 3’ x 20’ well would suffice for
a 30’-40’ plot; 4’ by 30’ well for a 60’-40’ plot
• For a layout, plan for one 5’x30’ well for each
acre of layout or 2-3 3’x20’ wells per acre.
• For homes, the overflow from the sump, or the
stormwater drain, or the downpipes are
connected to the well
• For community wells, the runoff from common
areas which flows in stormwater drains is
channelled into the well
34. How should I dig a recharge
well 2/2
• Where should you locate your recharge well?
• For residences, place the recharge well as close
to the borewell as you can and as far away from
soak pits, toilets, or building foundations and
basement
• For community wells, as close to storm water
drains and borewells.
• Line your well with jelly stones to make it
more sturdy
• Get help from an expert, particularly for
siting and waterproofing
42. How much does it cost?
Recommended well size Cost Range (for well
including slab)
Cost per ring (inc. digging,
sumping, making rings, transport,
installation)
3ft x 20ft Between25000 - 35000 rupees 1250-1750 rupees (approx. 20 rings)
4ft x 25ft Between 45000 - 60000 rupees 1800-2400 rupees (approx. 25 rings)
5ft x 30ft Between 88000 – 106000
rupees
2500 – 3300 rupees (approx. 30 rings)
Other costs to think about
Safety grill for 2’x2’ grill manhole
(openable) at 5’ depth from top
level
For home and community
recharge wells
Depending on the size of the well,
between 4000-11000 rupees
Slab – 2’x2’ GI manhole cover and
civil work
Depending on size of well, between
2000-4000 rupees
Motor/Pulley 3000-10000 rupees
Plumbing costs for connections 80-120 rupees for every running foot
of 4” dia pipe and 4kg/cm2 pressure
(with all fittings)
Drain / Civil Work For community recharge wells 3000-10000 rupees depending on the
nature of the drain, filters, traps.
Indrain filters
Silt traps
These are indicative costs, based on conversations with well diggers across the city. Actual costs
may vary.
43. Some points to remember
when digging an open well
●
The recharge well should be as far away from any soak
or toilet pit and any building foundation and basement
●
Place the recharge well as close to any borewell
●
The soil should be excavated to a size about 4” larger
than diameter of the well and reinforced concrete rings
are laid into the hole.
●
The space between the rings and the soil should be
packed with jelly or rocks measuring about 40 mm.
●
Connect your overflow from the sump, or stormwater
drain or downpipes to the well.
●
Don’t forget to place a concrete slab over the well, with
an opening to look inside.
44. Slab design options
• Here are some slab design options:
• Keep safety paramount. Noone should fall into
the well, so design appropriately.
• Cover the well with a solid RCC slab or a
metal grill.
• You need to be able to look into the well to
see how the water comes in, percolates out
during or after a rainfall. You could keep a
small 1” diametre peep hole or 1’x1’ chamber
cover on top of the well.
• You may also want to keep a 2’ x 2’ manhole
for maintenance and desilting.
45. Once you’ve dug your well
• Slowly over time your well may retain water.
Do a pump test to see if your well has begun
‘yielding’. If yes, monitor at what times during
the year your well yields, and you could begin
using this water!
• Maintain your well by cleaning and desilting
regularly – at least once every five years
46. Contact details of well diggers
in Bangalore
• A good time to dig wells is when the water
table is low – the wells are easier to dig
• They can dig upto 40 ft
• Many of them have dug wells outside
Bangalore as well, in places such as Ooty
and Hyderabad. They understand the lay of
the land, and are are willing to travel.
• Some of them are now on WhatsApp and
will send you pictures of their previous work
47. For every acre (4046 sqm)
● About 60% paved/rooftop/hard surfaces and
40% soft surfaces
● Runoff for 10mm rain
● 4046* 0.8 * .0 01 * 0.6= 19,000 litres from
hard surfaces alone
● 1 well of 5ft diameter and 30ft depth (16,000
litres in static volume)
55. Get in touch!
Get in touch with
Biome
Environmental
Trust at
water@biome-
solutions.com
This document is published
under a CC BY-NC-SA 2.5 IN
license.
55