త్రాగేనీటిలో హానికారక బాక్టీరియా (Bacteria) రేడియోధార్మిక (Radioactive) పదార్ధాల BIS పరిమితులు

[@ChennareddyPedarapu]

very nice informative video. it is very useful to everyone

[@neeru-manam5886]

Thank you so much sir

[@sairamkrishna428]

Important topic n informative

[@neeru-manam5886]

thanks

[@BTMEC_SuryaPrasanth]

Good information sir

[@neeru-manam5886]

Thanks and welcome

[@RaviKumar-pj5pv]

Very good information on Driking water standards. 👌👌

[@satyainti4210]

Excellent sir

[@neeru-manam5886]

So nice of you

[@palletipurushothamareddy2649]

Thank you so much sir.

[@neeru-manam5886]

welcome sir