Nestle Waters North America in Hollis has delivered millions of bottles of Poland Spring water to the Boston area where 2 million residents have been without clean water since a water main break over the weekend.

The Massachusetts Emergency Management Agency, which contracted with the company to provide emergency water, requested the help. The company delivered 21 truckloads of water and expects to deliver 40 truckloads more in the next two days.

Residents in Boston and 30 surrounding communities have been told by health officials to boil water or use bottled water for brushing teeth, washing vegetables and for consumption until the water quality can be returned to normal, which is expected later this week.