*Updated at 11:35am*
Indiana American Water has expanded a precautionary boil water advisory for a majority of its West Lafayette customers.
The order includes customers north of Stadium Avenue and lasts until 5 a.m. Saturday.
Company officials say an electrical problem caused its Davis Ferry water treatment plant and backup power generation equipment to shut down overnight, resulting in low water pressure to customers in that area.
Indiana American Water recommends those customers boil tap water for three minutes before drinking it or using it to cook.
Tap water can be used for washing and bathing.
The advisory affects more than 75% of the company's 10,400 West Lafayette customers.
Schools within the West Lafayette Community School Corporation will be closing one hour early today due to the advisory.