Dear Wisam Thamer Al-Mayah

Please refer to the following references:

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1011.2307&rep=rep1&type=pdf

Article Development of river water quality indices—a review

http://www.academia.edu/download/37323542/1113ijac02.pdf

Am too working on allied parameters...all the best

Bikarma Singh Thanks lots my dr.

National Sanitation Foundation's Water Quality Index (WQI-NSF).

Subhash Chavare thanks lots my dear dr.

Water quality indexes is the best due to gives very good idea for overall multi quality testing parameters. Also, its easy and simple to obtained.

Article Assessment of Groundwater Quality in UMM ER Radhuma Aquifer ...

Dear Dr. Waqed Al-Mussawi Thanks a lot for your comment and contribution, really thanks.

Trying to get more details

Dear Dr. Abhijit Mitra Thanks a lot for your comment and contribution, really thanks.

Assessment of Groundwater Quality in UMM ER Radhuma Aquifer (Iraqi Western Desert) by Integration Between Irrigation Water Quality Index and GIS Waqed Hameed Al-Mussawi

Well from my experience HPI-WQIs. However it depends on the specific purpose and the quality/quantity of data available

Dear Joan Nyika Thanks a lot for your comment and contribution, really thanks.

Dear Dr. Isam Alkhalifawi Thanks a lot for your comment and contribution, really thanks.

Alaa Ali