0 & lt2X+3-3(X- 1)& lt； 2

0 & lt2X+3-3X+3 & lt； 2

0 & lt6-X & lt； 2

-2 & lt； x-6 & lt； 0

4<X< six

X=5

Therefore, the quantity of mineral water for five people =5×2+3= 13 bottles.

Answer: five people 13 bottles of mineral water.