Page 120 - GRIHA Manual Volume V - Introduction to National Rating System
P. 120
Evaluation procedure 113
CRIteRIon 28
ensuRe wAteR quAlIty
GRIHA-speciic information
Objective
to provide the occupants of the building with good potable quality water for drinking and/
or washing purposes as prescribed by the standards and to ensure that treated wastewater is
meeting the desired standards for reuse and/or disposal.
28.1 Commitment
28.1.1 ensure water from all sources (such as groundwater, municipal water, treated wastewater)
meet the water quality norms as prescribed in the iS for various applications (indian
Standards for drinking [iS 10 500–1991], irrigation applications [iS 11 624-1986]), cooling
towers (as given in national building code (nbC) 2005).
Note: in case the water quality cannot be ensured, provide necessary treatment of raw water for achieving the desired
concentrations for various applications.
28.2 Compliance
28.2.1 Provide water optimization plan (water flow diagram giving the complete collection,
treatment, and distribution for different applications)
28.2.2 Provide the potable and treated wastewater quality details from various sources before
and after treatment
28.2.3 report/certificate from the local municipal authority for municipal water or certificate
from an nabl accredited laboratory on the quality of potable water
28.2.4 Provide the specification details indicating the capacity and components of the water
treatment plant along with drawings (product details from the manufacturer)
28.2.5 quality checking frequency and sampling plan for potable water (table 28.1)
Table 28.1 Testing of water quality before and after treatment
Parameter Before treatment After treatment
Dissolved oxygen (mg/litre)
Biological oxygen demand (mg/litre)
Total coliform bacteria (MPN/100 ml)
Total dissolved solids (mg/litre)
CRIteRIon 28
ensuRe wAteR quAlIty
GRIHA-speciic information
Objective
to provide the occupants of the building with good potable quality water for drinking and/
or washing purposes as prescribed by the standards and to ensure that treated wastewater is
meeting the desired standards for reuse and/or disposal.
28.1 Commitment
28.1.1 ensure water from all sources (such as groundwater, municipal water, treated wastewater)
meet the water quality norms as prescribed in the iS for various applications (indian
Standards for drinking [iS 10 500–1991], irrigation applications [iS 11 624-1986]), cooling
towers (as given in national building code (nbC) 2005).
Note: in case the water quality cannot be ensured, provide necessary treatment of raw water for achieving the desired
concentrations for various applications.
28.2 Compliance
28.2.1 Provide water optimization plan (water flow diagram giving the complete collection,
treatment, and distribution for different applications)
28.2.2 Provide the potable and treated wastewater quality details from various sources before
and after treatment
28.2.3 report/certificate from the local municipal authority for municipal water or certificate
from an nabl accredited laboratory on the quality of potable water
28.2.4 Provide the specification details indicating the capacity and components of the water
treatment plant along with drawings (product details from the manufacturer)
28.2.5 quality checking frequency and sampling plan for potable water (table 28.1)
Table 28.1 Testing of water quality before and after treatment
Parameter Before treatment After treatment
Dissolved oxygen (mg/litre)
Biological oxygen demand (mg/litre)
Total coliform bacteria (MPN/100 ml)
Total dissolved solids (mg/litre)
