Sixteen Lincolnshire villages are suffering from either low pressure or no water following a burst main.
Anglian Water engineers are working to fix the main which is affecting properties in the LN11, LN8, LN9 and PE23 postcode areas of Lincolnshire.
The repairs are estimated to be completed by midday on March 6.
Bottled water and bowsers are being provided in the meantime.
Edward Richardson Primary School in Tetford and Scamblesby Primary School have both been closed.
The villages listed by Anglian Water as affected by the burst water main are:
- North Willingham
- Burgh on Bain
- Donington on Bain
- Great Sturton
- East Barkwith
Other surrounding areas may also be affected.