National Sanitation Foundation Water Quality Index (NSFWQI) WQI Value

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Presentation transcript:

National Sanitation Foundation Water Quality Index (NSFWQI) WQI Value Table 1. Water Quality Rating as per different Water Quality Index methods National Sanitation Foundation Water Quality Index (NSFWQI) WQI Value Rating of Water Quality 91-100 Excellent water quality 71-90 Good water quality 51-70 Medium water quality 26-50 Bad water quality 0-25 Very bad water quality Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI) 95-100 80-94 60-79 Fair water quality 45-59 Marginal water quality 0-44 Poor water quality Oregon Water Quality Index (OWQI) 90-100 85-89 80-84 0-59 Very poor water quality Shweta Tyagi et al. Water Quality Assessment in Terms of Water Quality Index. American Journal of Water Resources, 2013, Vol. 1, No. 3, 34-38. doi:10.12691/ajwr-1-3-3 © The Author(s) 2013. Published by Science and Education Publishing.