HOLLAND TWP., MI (WHTC) - Residents in the area of 60th Avenue and Leonard Street in Polkton Township are under a Boil Water Advisory due to a drop in the water pressure last night. Those in and around Coopersville are asked to boil their water for three minutes before using it for drinking or cooking to help prevent illnesses related to tainted water. A county health department advisory is in effect through at least Wednesday, when results of today’s water tests are known.