Bacteriological Assessment of Bottled Drinking Water Available at Major Transit Places in Mangalore City of South India

Table 2

Purification techniques used for packaged drinking water bottles ().

Purification techniques	Number	Percentages
Ozone treatment	22	91.7
UV irradiation	19	79.2
Reverse osmosis	16	66.7
Sand filtration	7	29.2
Activated carbon filtration	6	25.0
Multistage filtration	2	8.3
Micron filtration	2	8.3