It was smelly... it was rotten... but you folks persevered and we got some pretty good results from our water filtering systems. Based on your submitted results, Carolee calculated the percent of residue that remained after each team filtered their "sewage". Several were within a few hundreths of a percent of each other, but when it came down to the final mark, team C-11*, with only 0.13% of their particulate matter escaping the clutches of their filter, had the most efficient system. Three other teams, B-4, C-3 and C-12, had 0.20% remaining. In third place was team B-1, with 0.26%. [Yes, Team C-12, the figures were adjusted for the additional filtrate you poured through! :-)]

Just in case you're interested in what the "award winning" system looked like, here's a sketch of its design... (Thanks, Emily, for letting me use your drawing! --- Carolee)

(Members of team C-11 who designed and constructed the above: Nicole Perry, Emily Powell, Barbara Gatewood and Laura Walsh.)

Just in case you are interested, here are the tallies for all the teams:

A-1 --- 3.0%
A-2 --- 4.2%
A-3 --- 4.2%
A-4 --- 0.70%
A-5 --- 2.56%
A-6 --- No results reported
A-7 --- 1.28%
A-8 --- No results reported
A-9 --- 0.60%
A-10 --- 0.64%

B-1 --- 0.26%
B-2 --- 0.30%
B-3 --- 0.33%
B-4 --- 0.20%
B-5 --- 0.33%
B-6 --- 2.2%
B-7 --- No results reported

C-1 --- 0.53%
C-2 --- 0.53%
C-3 --- 0.20%
C-4 --- 0.46%
C-5 --- 0.40%
C-6 --- 0.56%
C-7 --- 0.60%
C-8 --- 0.40%
C-9 --- 0.33%
C-10 --- 1.2%
C-11 --- 0.13%
C-12 --- 0.20%

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