Water in 31 Massachusetts communities, including Boston, is temporarily unsuitable for drinking after a massive break in a pipe that connects the Quabbin Reservoir to Boston.
State officials say the break in the 10-foot diameter pipe in Weston is leaking water into the Charles River at a rate of 8 million gallons per hour.
They say a boil water order has been put into effect in all 31 Massachusetts Water Resources Authority communities east of Weston.
The MWRA has activated emergency water supplies from various reservoirs for bathing, flushing and fire protection. But the water is not suitable for drinking.
MWRA engineers are on the scene of the break.
Here is the list of communities: