SAN LUIS, Colo. (CBS4) – People in San Luis are being warned not to drink the water.

A boil order is in effect for the small southern Colorado town south of Alamosa. It comes after water tested positive for E. coli earlier this week.

The Red Cross is providing bottled water through the weekend at the town fire station.

The San Luis water department says they aren’t sure when the water will be safe to drink.