Filtration in science

We done a expirement trying to fillter real dirty water in to cleanish water
Method: we filled a large becker with dirty water we got a funnel and a conical flask we half filled the funnel with pebbles to fillter out the larger solids from the water then we took the pebbles from the funnel  and used the water from the conical flask and repeated the prosess again but with charcoal then we tipped out the charcoal and used the water from the conical flask again but this time we used fillter paper and a clean conical flask then the water was cleaner than what it started as but i still would not drink it cause it was still light brown it would of turned out better if we did more steps it would of be cleaner

here are two fillters for real world situations