I would assume the boil water order has been lifted and all is normal again?
But for the next time somebody asks about E. coli, this is a bit of info I copied from the Mayo clinic site that might calm some fears. Seems most of us have E.coli in the old body already!
By Mayo Clinic Staff
Escherichia coli (E. coli) bacteria normally live in the intestines of healthy people and animals. Most varieties of E. coli are harmless or cause relatively brief diarrhea. But a few particularly nasty strains, such as E. coli O157:H7, can cause severe abdominal cramps, bloody diarrhea and vomiting.
You may be exposed to E. coli from contaminated water or food — especially raw vegetables and undercooked ground beef. Healthy adults usually recover from infection with E. coli O157:H7 within a week, but young children and older adults can develop a life-threatening form of kidney failure called hemolytic uremic syndrome (HUS).
So we may be in more danger from a nice green salad or slightly rare burger than any E. coli we find in the tank water?