Graph 1 shows the ppm CaCO₃ compared the

amount of water filtered.  This shows that instead of

gradually increasing, the ppm CaCO₃ increased in an

exponential function.  The asymptote occurred at 140 ppm

CaCO₃.

     Graph 2 shows that the amount of CaCO₃ removed

increased rapidly at first, but then gradually leveled off.  The

amount of CaCO₃ removed changed considerably between

some titrations.  It didn't continue increasing throughout the

filtrations.  This was contrary to my hypothesis of how the

filter would remove CaCO₃, in which I thought the amount of

CaCO₃ removed would gradually increase until it steadied.

     Graph 3 shows the concentration of CaCO₃, which is

basically the same information as Graph 2.

     From my experiment, I determined that the water at

Chipola Junior College is considered hard water. 

Some factors that may have affected my results include: 

construction work being done of the water pipes during the

latter part of the experiment,  water being piped in from

several different wells, and human error. 

     Also, the samples were not taken from consistent

amounts of filtrations.  For example, one day 3L were

filtered through and the next 21L were filtered through.  It is

hard to determine from my experiment if the amount of

water filtered had a significant affect on the amount of

CaCO₃ removed from my procedure, but it could be tested.