Page 98 - GRIHA Manual Volume V - Introduction to National Rating System
P. 98
Evaluation procedure 91
CRIteRIon 21
wAteR ReCyCle And Reuse
(InCludInG RAInwAteR)
GRIHA-speciic information
Objective
to utilize the treated wastewater and rainwater for various applications (including groundwater
recharge) where potable municipal water is normally used to reduce the load on both the
municipal supplies as well as the sewerage system and to improve the groundwater level.
21.1 Commitment
in order to achieve the above objective, following needs to be done.
21.1.1 Provision of necessary treatment of wastewater for achieving the desired composition for
various applications. here, wastewater usage refers to both blackwater and greywater.
treatment of blackwater and greywater separately and appropriate selection of the
system is an extremely site-specific issue and need to be done carefully.
21.1.2 implement rainwater harvesting and storage systems depending on the site-specific
conditions. all necessary steps to prevent possible contamination of groundwater by
rainwater harvesting should be taken (design requirements as per the Central ground
water board). this is a mandatory requirement.
21.1.3 reuse the treated wastewater and rainwater for meeting the building water and irrigation
demand.
21.1.4 recharge the surplus water (after reuse) into the aquifer.
21.2 Compliance
the following documents are to be submitted
21.2.1 narrative along with drawings and specifications of the type of wastewater treatment
and harvesting system being employed.
21.2.2 drawings indicating the specifications of dual plumbing system.
21.2.3 drawings with specifications of the systems, along with delivery lines, indicating the
capacity of wastewater treated and harvested.
21.2.4 Calculation sheet representing the total quantity of wastewater treated and harvested
and the amount being used for different applications including use within the building,
landscape, and fraction recharged into the ground.
21.2.5 details of filtration system to allow that adequate preventive measures are being taken
to avoid contamination of aquifer by the recharged water (mandatory).
CRIteRIon 21
wAteR ReCyCle And Reuse
(InCludInG RAInwAteR)
GRIHA-speciic information
Objective
to utilize the treated wastewater and rainwater for various applications (including groundwater
recharge) where potable municipal water is normally used to reduce the load on both the
municipal supplies as well as the sewerage system and to improve the groundwater level.
21.1 Commitment
in order to achieve the above objective, following needs to be done.
21.1.1 Provision of necessary treatment of wastewater for achieving the desired composition for
various applications. here, wastewater usage refers to both blackwater and greywater.
treatment of blackwater and greywater separately and appropriate selection of the
system is an extremely site-specific issue and need to be done carefully.
21.1.2 implement rainwater harvesting and storage systems depending on the site-specific
conditions. all necessary steps to prevent possible contamination of groundwater by
rainwater harvesting should be taken (design requirements as per the Central ground
water board). this is a mandatory requirement.
21.1.3 reuse the treated wastewater and rainwater for meeting the building water and irrigation
demand.
21.1.4 recharge the surplus water (after reuse) into the aquifer.
21.2 Compliance
the following documents are to be submitted
21.2.1 narrative along with drawings and specifications of the type of wastewater treatment
and harvesting system being employed.
21.2.2 drawings indicating the specifications of dual plumbing system.
21.2.3 drawings with specifications of the systems, along with delivery lines, indicating the
capacity of wastewater treated and harvested.
21.2.4 Calculation sheet representing the total quantity of wastewater treated and harvested
and the amount being used for different applications including use within the building,
landscape, and fraction recharged into the ground.
21.2.5 details of filtration system to allow that adequate preventive measures are being taken
to avoid contamination of aquifer by the recharged water (mandatory).
