from personal experence i would say no..i lived in a home that
had good well water..i put a 5 gallon jug away in case of power
failures and the pump would not run..this sat in a back room
for over a year and showed no change in taste or appearance..
same with good lake water..i take a jug of canoe country water
from the last lake i paddle out of in northern minnesota on
the last trip of the year and save it over the winter..it never
shows any change --i have a glass in the spring and put the
rest on the tomatos as sort of a welcome summer rite..