City of Grandview Heights issued the following announcement on Mar 30.
Beginning April 1, the Fire Department will start their annual fire hydrant flushing and testing. Over the course of approximately one month, crews will work their way around Grandview Heights to flush each hydrant.
Flushing the hydrants ensures that each one is properly functioning and also removes sediment and debris from the water lines. Sometimes hydrant flushing can make the water temporarily appear rust-colored because the iron and mineral deposits in the water get stirred up.
We assure you this is safe and advise you to run your cold tap for 2-3 minutes or until the water turns clear.
Original source can be found here.
Source: City of Grandview Heights