Based on the overall test findings, DJB Jal is the top performer. Next in ranking is Aquafina.
DJB Jal is also the value-for-money brand.
Bisleri, Kinley and Pure Drop did not meet the microbiological requirements specified by Indian Standard and are therefore not recommended for consumption. Total viable colony count (of bacteria) was found to be high in all three brands.
Pseudomonas aeruginosa was detected in Pure Drop. This brand was also found to contain yeast and mould.
None of the brands was found surpassing the maximum permissible limit for various minerals, toxic substances and residual pesticides.
In physical tests (colour, TDS, turbidity, pH), all brands met the requirement set by Indian Standard.