Flint officials say an "abnormal water sample" is the reason a boil-water advisory was issued for a small part of Flint's west side on Monday.

A statement from the city on Monday afternoon said "testing over the last 48 hours has shown that water tests negative for the presence of fecal coliform bacteria and E.coli, but an abnormal test result triggered the advisory. It is believed that a sampling error is to blame for the abnormal test; however, as a precaution, the advisory will remain in effect until the next citywide sampling has been completed."

The city goes on to say that testing of Flint's drinking water happens weekly at nine different sites around the city and that drinking water contamination due to E.coli or coliform bacteria is very rare due to the fact that the bacteria cannot survive in water for very long.

The next round of testing is scheduled to occur today with the possibility that the advisory being lifted as early as Wednesday.