If the ph is within range and water has no smell of chlorine, should be fine. If you can smell the chlorine, will have to let the water sit till chlorine is evaporated, which would defeat your attempts at streamlining your rituals. How about filling a five gallon bucket to let the chlorine evaporate, and use a one gallon jug to transport to the reservoir?

If you do start using your tap water, would watch the plants closely for a week or two after. May have to adjust your micronute doses a bit, too.