Water Quality Index and Status

  • Raveendra Kumar Rai
  • Alka Upadhyay
  • C. Shekhar P. Ojha
  • Vijay P. Singh
Part of the Water Science and Technology Library book series (WSTL, volume 66)


This chapter includes a methodology for determining the water quality status of a river. The water quality of the Yamuna River is described using indirect and direct methods. The indirect method is based on various water quality indices (WQI), whereas the direct method uses water quality data at various locations on the river. Detailed mathematical formulations of the various WQIs, such as National Sanitation Foundation (NSF), Nonlinear NSF, Canadian Council method, Nasirian (2007) method, Universal method, and European Classification Scheme, are presented. Besides the WQI-based approach, a detailed analysis of water quality data is presented in order to determine water quality trends, profile, and monthly variations in the river. The bio-mapping technique is also used to detect the gradual change in the water quality status of the Yamuna River.


Water Quality Rating Curve Water Quality Parameter Fecal Coliform Biological Oxygen Demand 
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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Raveendra Kumar Rai
    • 1
  • Alka Upadhyay
    • 1
  • C. Shekhar P. Ojha
    • 2
  • Vijay P. Singh
    • 3
  1. 1.DHI (India) Water & Environment Pvt LtdNew DelhiIndia
  2. 2.Department of Civil EngineeringIndian Institute of Technology RoorkeeRoorkeeIndia
  3. 3.Department of Biological & Agricultural EngineeringTexas A and M UniversityCollege StationUSA

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