Post on 08-Jan-2022
© Confederation of Indian Industry
WATER CONSERVATION
© Confederation of Indian Industry
The World’s Water
70% of Earth’s surface is covered with water
© Confederation of Indian Industry
Saltw ater97.5%
Freshw ater2.5%
Total Surface Freshwater : 0.4%
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Where is the freshwater?
World’s Freshwater
World’s Water
Groundwater30.1%
Surfacewater0.4%
Glaciers69.5%
Salt Water97.5%
Fresh Water2.5%
© Confederation of Indian Industry
Water Consumption Pattern in a Typical Air-conditioned Building
Landscaping
Flushing
Air-conditioning Make-up
25-30%
25-30%
50-60%
© Confederation of Indian Industry
Approach
� Reduce
� Recycle/ Reuse
� Recharge
© Confederation of Indian Industry
Water Conservation
Credit Title Points
WC Mandatory Requirement 1
Rainwater Harvesting,
Roof & Non-roofRequired
WC Mandatory Requirement 2
Water Efficient Plumbing Fixtures Required
WC Credit 1 Landscape Design 2
WC Credit 2 Management of Irrigation Systems 1
WC Credit 3Rainwater Harvesting,
Roof & Non-roof4
WC Credit 4 Water Efficient Plumbing Fixtures 5
WC Credit 5 Wastewater Treatment and Reuse 5
WC Credit 6 Water Metering 1
Total 18
© Confederation of Indian Industry
WC Mandatory Requirement 1
Rainwater Harvesting, Roof & Non-roof
� Intent
� Enhance ground water table and reduce
municipal water demand
� Through effective rainwater management
� Compliance Option
� Design rainwater harvesting system to
capture at least ‘One-day Rainfall’ runoff
volume from roof & non-roof areas
© Confederation of Indian Industry
Criteria to arrive at ‘One-day Rainfall’
S.No.Average Peak Month
Rainfall in mm
“One-day Rainfall”(% of Average Peak
Month Rainfall)
1 Upto 250 9%
2 251 – 350 7.5%
3 351 – 500 6%
4 501 – 700 4.5%
5 701 & above 3%
Lower the rainfall – Higher the harvesting volume
Higher the rainfall – Lower the harvesting volume
© Confederation of Indian Industry
Runoff Coefficients for Typical Surface Types
Surface type Runoff Coefficient
Cemented / Tiled Roof 0.95
Roof Garden 0.5 – 0.1
Turf, Flat-to-steep 0.25 – 0.45
Mixed Vegetation, Flat-to-Steep 0.1 – 0.3
Concrete Pavement 0.95
Gravel Pavement 0.75
Open-grid Grass Pavement 0.5
Water Bodies (lined) Eg: Swimming pool 0.95
Water Bodies (un-lined) Eg: Harvesting pond 0
Runoff volume = Surface area x Runoff Coefficient x Rainfall
© Confederation of Indian Industry
Rainwater Harvesting, Roof & Non-roof
� Rainwater harvesting is exempted in areas
where:
� The Central/ State Ground Water Board does
not recommend artificial rain water recharge
(Or)
� The groundwater table is less than 8 meters
Applicable for Mandatory Requirement only
© Confederation of Indian Industry
Rainwater Harvesting Pit with Filtration
© Confederation of Indian Industry
Rainwater Harvesting Pond
Turbo Energy, Chennai Platinum Rated
© Confederation of Indian Industry
WC Mandatory Requirement 2
Water Efficient Plumbing Fixtures
� Intent
� Enhance efficiency of plumbing fixtures,
thereby minimising potable water use
Flow fixturesFlush fixture
© Confederation of Indian Industry
WC Mandatory Requirement 2
Water Efficient Plumbing Fixtures
� Compliance Option
� Use water efficient plumbing fixtures
� Flow rates to meet the baseline criteria
in aggregate
Notes:
• Treated waste water/ captured rain water should NOT be considered
for calculations
• Use of treated waste water is addressed in ‘Waste Water Treatment
and Reuse’
© Confederation of Indian Industry
Baseline Flow Rates / Consumption
Fixture TypeMaximum Flow
Rate/Consumption
DurationEstimated Daily Uses
per FTE
Water Closets
(Full-flush)6 LPF 1 flush
1 for male;
1 for female
Water Closets
(Half-flush)3 LPF 1 flush 2 for female
Urinals 4 LPF 1 flush 2 for male
Faucets / Taps* 6 LPM 15 seconds 4
Health Faucet* 6 LPM 15 seconds 1
Showerhead /
Handheld Spray*10 LPM 8 Minutes 0.1
* Reporting pressure for these fixtures shall be at 3 bar.
© Confederation of Indian Industry
Full Time Equivalent (FTE)
� FTE represents a regular building
occupant who spends 8 hours/ day
in the building
� Part-time or overtime occupants have
FTE values based on their hours per day
1 FTE = 8 hours / day
© Confederation of Indian Industry
Flow Fixtures Fitted with Aerators
Aerators - Small in size, Big in Impact
© Confederation of Indian Industry
Aerator Demo
© Confederation of Indian Industry
Waterless Urinal
© Confederation of Indian Industry
Waterless Urinal
Key Valve
© Confederation of Indian Industry
WC Credit 1
Landscape Design� Intent
� Design landscape to ensure minimum
water consumption
Infosys Pocharam, Hyderabad
© Confederation of Indian Industry
WC Credit 1
Landscape Design
� Compliance Options:
� Limit use of turf to conserve water
� Design landscaped area with:
� Drought tolerant
� Native
� Adaptive species
Xeriscaping Native Species
© Confederation of Indian Industry
Azadirakta Indica Pinus
Cactus Family
Palm Family
NativeDrought Tolerant
Adaptive
Landscape Design
© Confederation of Indian Industry
Points Distribution
Type of Landscape Percentage Points
Turf Area < 30% 1
Drought Tolerant / Native /
Adaptive Species Area> 30% 1
© Confederation of Indian Industry
Vegetation on Roof
IDBI, Mumbai
Kalpataru Square, MumbaiPlatinum Rated
© Confederation of Indian Industry
WC Credit 2
Management of Irrigation Systems
� Intent
� Reduce water demand for irrigation
� Through water efficient management systems
and techniques
Moisture SensorSprinklers for Landscaping Drip Irrigation
© Confederation of Indian Industry
Management of Irrigation Systems
� Compliance Options: (1 point)
� Provide/ install highly efficient irrigation systems (minimum four features)
� Central shut-off valve
� Soil moisture sensors
� Segregate landscape areas, based on watering needs
� Drip irrigation system, to reduce evaporation
� Timer based controls
� Pressure regulating devices
� Any other innovative methods for watering
© Confederation of Indian Industry
WC Credit 3
Rainwater Harvesting, Roof & Non-roof
� Intent
� Enhance ground water table and reduce
municipal water demand
� Through effective rainwater management
� Compliance Option (2-4 points)
� Case A: Design rainwater harvesting system to
capture at least ‘One-day rainfall’ runoff volume
from roof and non-roof areas
© Confederation of Indian Industry
WC Credit 3
Rainwater Harvesting, Roof & Non-roof
S No
Average Peak Month Rainfall
(mm)
One-day Rainfall
(% of Average Peak Month Rainfall)
2 points 3 points 4 points
1 Upto 250 12% 15% 18%
2 251 – 350 10% 12.5% 15%
3 351 – 500 8% 10% 12%
4 501 – 700 6% 7.5% 9%
5 701 & above 4% 5% 6%
Lower the rainfall – Higher the harvesting volume
Higher the rainfall – Lower the harvesting volume
© Confederation of Indian Industry
WC Credit 3
Rainwater Harvesting, Roof & Non-roof
� Compliance Options
� Case B High Ground Water Table: Design rainwater harvesting system to capture at least ‘One-day rainfall’ runoff volume from roof and non-roof areas
S No
Average Peak Month
Rainfall
(mm)
One-day Rainfall
(% of Average Peak Month Rainfall)
2 points 3 points 4 points Exemplary
1 Upto 250 6% 9% 12% 15%
2 251 – 350 15% 7.5% 10% 12.5%
3 351 – 500 4% 6% 8% 10%
4 501 – 700 3% 4.5% 6% 7.5%
5 701 & above 2% 3% 4% 5%
© Confederation of Indian Industry
WC Credit 4
Water Efficient Plumbing Fixtures
� Intent
� Enhance efficiency of plumbing fixtures
thereby minimising potable water use
© Confederation of Indian Industry
WC Credit 4
Water Efficient Plumbing Fixtures
� Compliance Option:
� Use water efficient plumbing fixtures
with flow rates less than 8% of the
baseline criteria
Notes:
• Treated waste water/ captured rain water should NOT be
considered for calculations
• Use of treated waste water is addressed in ‘Waste Water
Treatment and Reuse’
© Confederation of Indian Industry
Baseline Flow Rates / Consumption
Fixture Type Maximum Flow Rate/
Consumption
Duration Estimated Daily Uses
per FTE
Water Closets
(Full-flush)6 LPF 1 flush
1 for male;
1 for female
Water Closets
(Half-flush)3 LPF 1 flush 2 for female
Urinals 4 LPF 1 flush 2 for male
Faucets / Taps* 6 LPM 15 seconds 4
Health Faucet* 6 LPM 15 seconds 1
Showerhead /
Handheld Spray*10 LPM 8 Minutes 0.1
* Reporting pressure for these fixtures shall be at 3 bar.
© Confederation of Indian Industry
Points Distribution
Water Efficient Plumbing Fixtures(Individually or in aggregate)
Points
8% less than baseline criteria 1
12% less than baseline criteria 2
16% less than baseline criteria 3
20% less than baseline criteria 4
24% less than baseline criteria 5
© Confederation of Indian Industry
WC Credit 5
Waste Water Treatment and Reuse
� Intent
� Treat waste water generated on-site
� To avoid polluting the receiving streams
by safe disposal
� Use treated waste water
� To reduce dependence on potable water
© Confederation of Indian Industry
Waste Water Treatment and Reuse
� Compliance Options:
� Waste Water Treatment (2 Points)
(And / Or)
� Waste Water Reuse (3 Points)
© Confederation of Indian Industry
Waste Water Treatment
� Install on-site treatment system to
handle 100% of waste water
generated in the building
� Quality standards should comply with
CPCB/State Pollution Control Board norms
© Confederation of Indian Industry
On-site STP
Eicher Good Earth, GurgaonPlatinum Rated
© Confederation of Indian Industry
Phytoremediation
CII- Sohrabji Godrej Green Business CentrePlatinum Rated
© Confederation of Indian Industry
Waste Water Before & After Treatment
L’oreal India Pvt. Ltd., PuneGold Rated
© Confederation of Indian Industry
Waste Water Reuse
� Use treated waste water for:
� Landscaping
� Flushing
� Cooling tower make-up water
ApplicationPercentage of Total Water catered through Treated
Waste Water
Landscaping, Flushingand Air-conditioning make-up
≥ 25%
≥ 50%
≥ 75%
© Confederation of Indian Industry
WC Credit 6
Water Metering
� Intent
� Encourage sub-metering to improve water
performance of the building, and save
potable water
Water meter for
Gardening
© Confederation of Indian Industry
WC Credit 6
Water Metering
� Compliance Options:
� Building-level Metering
(For Owner-occupied & Tenant-occupied buildings)
� Tenant-level Metering
(For Tenant-occupied buildings)
© Confederation of Indian Industry
Building-level Metering (Install atleast three water meters)
� Municipal water supply
� Bore water consumption
� Treated waste water consumption
� Water consumption for landscaping
� Water consumption for flushing
� Water consumption for air-conditioning cooling tower makeup
� Any other major source of water consumption
© Confederation of Indian Industry
Tenant-level Metering
� Municipal water supply/ Water consumption
through bore-well (Potable water)
� Water consumption for flushing
(Non-potable water)
Water Meters
© Confederation of Indian Industry
Water Conservation
Credit Title Points
WC Mandatory Requirement 1
Rainwater Harvesting,
Roof & Non-roofRequired
WC Mandatory Requirement 2
Water Efficient Plumbing Fixtures Required
WC Credit 1 Landscape Design 2
WC Credit 2 Management of Irrigation Systems 1
WC Credit 3Rainwater Harvesting,
Roof & Non-roof4
WC Credit 4 Water Efficient Plumbing Fixtures 5
WC Credit 5 Wastewater Treatment and Reuse 5
WC Credit 6 Water Metering 1
Total 18
© Confederation of Indian Industry
Every drop counts …