A boil water advisory is in effect for some customers of the Hamburg Municipal Authority in Berks County.

People who live in the 700 block of State Street in Hamburg and those who live south of Old Route 22 in neighboring Windsor Township are advised to boil their water until further notice, officials said Tuesday.

The advisory is the result of a water main that broke Monday night in the 800 block of Mountain Road in Windsor Township. Crews are still working to repair the break.