To reduce cost, I'm considering calculating the weighted arithmetic water quality index using 7 chosen parameters. Is this acceptable?
Oxygen, ph, turbidity, bod, cod, organics, heavy metals, self purification time, dissolved solids, germs, bacteria, pathogens, birthday tolerance for micro macro aquatic life,
Immunity levels on long term human use, disease causing or disease curing capabilities.... Are few among many parameters.
Since quality of water results by the contributions of all types parameters present in water, it would be more effective as well as authentic to use all of them to estimate water quality index.
I agree with Phani Bhusan Ghosh . All paramaters indicates some characteristics of water type . These are some articles that might help.
Article An evaluation of irrigation water suitability in the Dwarka ...
Article Comparative evaluation of water quality zonation within Dwar...
As per earlier discussion this question suggests that all the parameters have to be considered but in weighated arithmatic method as the number of parameters increased it increases the final value and possibility to turn out all good quality samples into bad one. So, to avoid this confusion you can adopt the newly developed unbiased and easy Intergrated water quality index.
https://www.researchgate.net/publication/331009233_Development_of_new_integrated_water_quality_index_IWQI_model_to_evaluate_the_drinking_suitability_of_water
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