Officials said the water system may be at an increased risk from microbial contamination due to a drop or loss of water pressure from a water main break or leak.

The city has issued a boil water advisory for part of Flint’s south side because of a water main break. The boil water advisory covers an area from Dort Highway on the east to Red Arrow Road on the west and from Atherton Road on the north to Hemphill Road on the south.

Johnstown issued a boil water advisory for a portion of the city Tuesday due to a crack in a water service line, officials said Wednesday.

Residents of the 200 block of West Orange Street should boil their water before using it as the city repairs a water main break near their homes.

Multiple communities in northwestern Hamilton County are under a boil water advisory until the end of January. According to Greater Cincinnati Waterworks, the advisory applies to all of Crosby Township, a small part of eastern Harrison Township, and households in western Colerain Township near East Miami River Road.

Halifax Water is looking at improving communications with Nova Scotia Power and clarifying protocols for issuing municipal and provincial alerts and advisories after a two-day disruption in water service last month.

The boil water advisory was issued as a precaution after a waterline break that caused pressure loss, officials said.

FLINT, Mich. (WNEM) - A boil water advisory has been issued for areas of Flint following a water main break. The break happened on Feb. 3. The city said the break is impacting the area from Dort Highway to Red Arrow Road, east to west, and from Atherton Road to Hemphill Road, north to south.

A Facebook post from the Village of Fredonia Monday night said the advisory is in place after a pipe burst at the Water Treatment Plant.

The city of Harlan, Iowa is under a water boil advisory after a water main break. The advisory is a precaution for those living south of the intersection of Highway 58 and 900th street.