Water Quality Index (WQI)

Water Quality Index or WQI is a very efficient and user-friendly tool to assess and represent water quality of a water source. It is very useful to analyse complex and bulk water quality data and represent them to the administration and common people in understandeable way. This video lucidly explains WQI determination step by step with the help of an example.

[@sudiptadash5122]

Thank you so much. Very informative presentation. But at 6.11 min, how come the Σ(1/Si) become 134??

[@soniaghosh2539]

very informative for a person like me who had no idea about WQI till I saw this video

[@GreenFeather]

Thanks for the appreciation! Best Wishes!

[@dr.biswajitpaul7725]

Very interesting information regarding water quality. This video will be useful for environmental engineering students, civil engineering students, research scholars, public health engineering department, regulatory organisations, Water NGOs and other interested people.

[@GreenFeather]

Thank you for your valuable words.

[@user_my_view]

I'm a scholar and this content was very useful. Thanks

[@sandishow2749]

Nicley compliled video, althogh i m nt into field but it is so illaborateld explaind that make me understand each n every step of it... n indeed water is precious resource in this era, so it need to be assed. Well done greenfeather

[@GreenFeather]

Thank you so much for your cooperation and support!

[@supriyogoswami1547]

Very useful vedio for me as a beginner in this water quality field.

[@GreenFeather]

Glad that the video is of help to you.

[@roady8828]

This video has enlightened me on WQI topic.

[@GreenFeather]

Glad to know that the video is helpful to you. please follow for more videos like this. Thanks and best wishes.

[@geetaromi9424]

Well explained in a very simplified way... Thnk u mam 4 uploading....

[@GreenFeather]

hit the bell icon for more updates

[@uzairkhan8574]

Very informative, I have a boubt we can find WQI through canadian standard 1993 as well?

[@GreenFeather]

This technique can be applied with any recommended standard.

[@prof.dr.sadiqs.muhsunal_ji6353]

Dear sir. If sumation of Wi is always equals to 1. Why do you considered it to find Wi ?. Note that wi_column is always same the Wi_column. Thank you

[@IndraMJha]

Perfect video on WQI

[@linakhouri6631]

thank you very much i would like to ask if there is any way to determine weight of the variable by statically methods and thank you

[@decefi]

Looking forward to see some more videos.

[@GreenFeather]

Thank you! The video is having human voice.

[@sujatasunar168]

Beautifully explained 👍👍👍

[@GreenFeather]

Thanks a lot 😀

[@saibhaskar2008]

Very good similarly expecting how air quality index is calculated and when we can use geometric progression to get the indicies

[@GreenFeather]

Thanks for your kind words and support. We will surely try to make a video on AQI in future. Geometric progression was introduced back in 1974 by McClelland. Geometric as well as harmonic progression was used in expectation that these will increase the sensitivity of the model towards lower parameter values or minute fluctuations.

[@preitisaha9929]

please upload the AQI asap...

[@GreenFeather]

We will try our best to upload it fast 😃

[@onyemaucheadaeze297]

Please how can I get the calculation for Oregon WQI

[@GreenFeather]

Thank You for your Respose..We will try to put up a video on other WQI indices...Please find the CCME WQI in our channel

[@mynulislam1258]

what is E-04, E05??? how the summation of Wi is 1?

[@sarmisthasaha7347]

Simple but important video.

[@GreenFeather]

Thanks

[@chadlikhalid9723]

@@GreenFeather very usuful tutoriel, please i need the reference for this index

[@GreenFeather]

@@chadlikhalid9723 we have made the video on our understanding of the subject. If you want we can send relevant papers. Kindly drop us an email in green. [e-mail]

[@PramodKumar-vx7ir]

Excellent slides....

[@GreenFeather]

Thank you for reaching to us

[@arpitd.9796]

Very informative, interesting and nicely explained video. I'm going to check my water quality now 🤡

[@GreenFeather]

Happy that the video is of use to you. Hopefully we will be able to provide more good contents in the coming days 😃 Thanks and Best Wishes!

[@azzeddinereghais7494]

Thanks, Please also explain to us in the future entropy weighted water quality index (EWQI)

[@GreenFeather]

Thank you for watching our video..

[@thiagoacioly3453]

Has anyone managed to use the "Canadian Water Quality Index 1.0 Calculator"?

[@sarmisthasaha7347]

Please provide a video on CCME WQI

[@anirbankunduchowdhury6207]

Very interesting and informative

[@GreenFeather]

Thanks!

[@girishvemulapalli1095]

very use full information

[@GreenFeather]

Thanks

[@GreenFeather]

Glad that you find it useful. Our next video will be on a very easy to use WQI. Do subscribe the channel and help us to create more and more quality content.

[@SonuKumar-bl7vj]

Oh it means Wi is already calculated or given by who. We have to jus calculate the Qi And integrate in WQI formula

[@sajidshahriar6386]

Well explanation. Thanks a lot

[@GreenFeather]

Thank you for watching our video

[@babtoonz8910]

Thanks for this video But please can we use all the parameters to calculate for WQI I thought there were specific parameters

[@vaishalichaudhary4349]

Plz explained which parameters are required for wqi

[@karegowdakm9105]

Can you please explain, how GIS techniques will be used while calculating the groundwater quality.

[@GreenFeather]

Could you please email your query at [e-mail] ? Thank you

[@dhruvyadav7737]

very nice explanation mam it helps a lot

[@rakeshshah1717]

Good concept🙏

[@GreenFeather]

Thanks. Don't forget to subscribe and hit the bell icon...

[@suryas3105]

Ma'am in gate exam , do we use other than arithmetic to determine wqi?

[@GreenFeather]

Thank you for your interest in our channel. In any competitive exam, if you are required to determine WQI, then the method must be mentioned in the question itself. If arethematic is mentioned then do follow the steps mentioned in our video to assess the water quality.

[@wulandka1408]

analysis of water quality index is based on who is it sir? NSF WQI or Brown, or something?

[@syedyakubali1154]

In this video they follow BSI standard. U can use any established water quality standard like WHO. It is better that u use national standard of native country.

[@bhaweshjoshi2596]

who gave this index could u please name it?

[@dilandhananjaya6742]

is this method can be used for biological parameters like E-Coli and total coliforms?

[@syedyakubali1154]

For drinking water coliform standard is 0.Therefore, 1/Si = infinity. So, u can't calculate WQI. This is the disadvantage of arithmetic WQI. U can used CCME WQI for such parameters.

[@dilandhananjaya6742]

@@syedyakubali1154 Thanks for the reply. But in my case, I have only one-time sampling for 40 wells. Is it suitable for used the CCME WQI method for one sampling? or can you suggest me to the best way to analyze this data (physicochemical and biological) using any WQI method

[@syedyakubali1154]

@@dilandhananjaya6742 Yes, Dilan ji. U can calculate. Recently I found @greenfeather upload 2 videos about CCME WQI with good explanation. U can follow their videos.

[@parthsaole1292]

is this horton index

[@user_my_view]

Hi. Thanks for this useful video, it has helped me understand the general procedure of calcutating WQI with ease. A quick question and a request... 1. How would the results be affected if a parameter of a different SI unit is introduced, for example if temperature was needed and someone used temperature in degrees Celsius while another uses Kelvin? 2. Could you kindly upload a video of how to construct a sample categorisation/classification table given water quality standard of a particular place...

[@dilipsaha1031]

Good one

[@GreenFeather]

Thank you😊 your support means a lot to us.

[@surendrakumarsahu7920]

Very nice explanation 😊

[@GreenFeather]

Thanks 😊.. Do support us to create more useful contents!

[@abhisheksn25]

DO U HAVE ANY SPREADSHEET FOR DOING THIS

[@GreenFeather]

Thank You for showing your interest in GreenFeather. We determine the water quality of water bodies and assist in research work as well. You can send your query in [e-mail].

[@joycegama2014]

EXPLAIN MORE ON GROUNDWATER WATER QUALITY

[@namefirst1574]

Maam Which is the correct expression Qi = (Vi/Si)*100 or Qi ={(Vi-Vo)/(Si-Vo)} * 100

[@vishalmangaraj]

I think both are correct, when Vo not given first equation is used, and when Vo is given second equation is used.

[@rutvikparab4365]

I just checked on the internet... the WQI rating table there is completely opposite of what you have given

[@GreenFeather]

WQI may be computed through different techniques. In this video only one technique is described, which can be followed to assess the water quality of an area. The categorisation shown here is also just an example to clarify the final step. The categorisation can be done suitable to the study area or previous knowledge on water quality status, as mentioned in the video. The reverse categorisation is for WQI- CCME/ NSFWQI/OWQI or modifed WQI based on normalised scoring of the parameters. If you want more videos on these techniques, please let us know and subscribe us for updates on such topics..

[@DarshanWithBihari]

Mam Can I get This Ppt Please reply

[@manaspratim8774]

Please upload on a video on calculation of water quality index for irrigation purpose and aquatic life

[@GreenFeather]

Thank you for your interest in our video..you can substitute the standard for irrigation and fishery in place of drinking water quality standard as mentioned in video..apart from this irrigation water quality can be assessed through SAR/ wilcox index etc, which will be uploaded soon...stay tune and subscribe for more updates..

[@manaspratim8774]

@@GreenFeather please provides the water quality standard limits for irrigation and fishery

[@rutvikparab4365]

Is Summation w(i) = 1 in every case ??

[@GreenFeather]

Thank you for your interest in this video. summation (w(i)) should always be 1, while computing w(i) through the steps as described in this video. However, it may be more than 1, if weightage is determined by different techniques such as expert opinion or literature survey, etc.

[@manaspratim8774]

@@GreenFeather ma'am make a video on water quality index for irrigation purpose and aquatic life

[@GreenFeather]

Dear Manas, determination of WQI for irrigation water is same as determining WQI for drinking water, only you have to select parameters more relevant for irrigation water and you have to select suitable standard values for irrigation water.

[@johnmohd3213]

Dear ma'am, interesting information. Could you help me for analysing data to determine WQI. Then I will send you data.

[@GreenFeather]

Hi John, Green Feather is an environment consultancy.. You may email your requirement to [e-mail] ... Never send raw data to any organization without verifying the source...

[@saibhaskar2008]

Thanks

[@bennada7701]

❤❤❤❤❤❤❤❤

[@ritasaha9294]

It's great...

[@GreenFeather]

Thanks. Don't forget to like, share, subscribe and hit the bell icon to get the latest updates.

[@neilsenslamberts200]

39310 Zboncak Cliffs

[@DavidBilder-b1v]

6255 Bednar Trafficway

[@abhisheksn25]

summation of (1/Si) is wrong and their is lot of mistakes in doing (1/Si) i guess

[@GreenFeather]

Noted with thanks. We will mention the calculation error in our description. The basic purpose of this video is to demonstrate the steps of calculating a particular type of WQI. Hope it has served its purpose. Thanks again for your interest in the subject. Regards and best wishes.

[@DouglassBurgess]

3953 Robel Plaza

[@JacksonEden-q3q]

Micaela Glen

[@MaryaliceClaudio-m9i]

Dejah Springs

[@DeweyChristiana-u6b]

Kohler Trail

[@BrandonSalas-g2z]

Davon Neck

[@JeffreyAllen-b8j]

Hoppe Road

[@MichelleKelley-l6u]

Alessia Trace

[@JeffreyPerez-n9y]

Goyette Crossroad

[@KevinAnderson-b5t]

Skiles Court

[@DaisyGeorgia-e1c]

36073 Isaias Skyway

[@OmegaPadiong-v7e]

Hodkiewicz Brooks

[@JoyBray-p9j]

Delia Port

[@LindberghAlva]

921 Jaiden Stream

[@MelissaMiller-d3g]

Schuppe Trace

[@IndraMJha]

Perfect video on WQI

[@GreenFeather]

Thank You