Can i store water in a bucket if i have a pump?

I want to store water in a 5 gallon bucket with a pump attached to make watering easier. For starters my water source is far away from grow room and i always end up spilling. Second, i want to de chlorinate my tap water so having a pump run while its in the bucket will make sure that happens. Is their anything wrong with this method? Will the water get gross or will it affect my ph? My tap water ph is 7.0 and its TDS is around 300-350.