Parameters | Before filtration | After filtration | WHO standards |
Total coliforms | 9600/100 ml | 240/100 ml | 0/100 ml |
E. coli | 160/100 ml | 0/100 ml | 0/100 ml |
Fecal streptococci | 65/100 ml | 0/100 ml | 0/100 ml |