People in Atlanta and parts of Fulton County are advised to continue boiling water for at least one minute before using water for cooking, drinking or personal hygiene.

The boil water advisory is in effect until further notice, according to the Atlanta Department of Watershed Management, which shared news of the advisory on Twitter.

Officials said residents should expect to continue boiling water all day Sunday.

The Department of Watershed Management was flushing the system as a precaution and testing to ensure no contamination exists the system, officials said Sunday. Officials said they would lift the boil water advisory when the Environmental Protection Department gives the OK. Because samples must be incubated for 24 hours, the advisory will not be lifted before midnight on Monday.

Major storms created electrical power outages, resulting in a temporary loss of pressure in the drinking water system at two pumping stations. The Northside pumping station system was restored to normal operations within 10 minutes and power was restored after 45 minutes.

Temporary loss of pressure occurred at two pumping stations, affecting downtown Atlanta and Avon Avenue to the south, Holtzclaw Street to the east and Joseph E Lowery Boulevard to the west, according to Watershed Management.

Streets between downtown Atlanta to the south including South Fulton County, west to the West End and east to Moreland Avenue. Affected areas included the Fox Theatre, Cabbagetown, Edgewood, Old Fourth Ward, West End, Peoplestown, Reynoldstown, Mechanicsville, Summerhill, Edgewood, Avon Avenue and South Fulton County.

Infants, the elderly and those with immune deficiencies should be particularly careful, officials said Sunday in a press release. If you experienced a loss of water at your address but your address is not within the area described, you may want to follow these precautions.

Also, storm damage in northwest Atlanta took down many trees and left thousands of people without electricity.

Peachtree Battle to Moores Mill Road suffered a great deal of damage, with a large tree taking down power lines and blocking Moores Mill Road, Channel 2 Action News reported.

Officials with Georgia Power said crews made significant progress last night, restoring power to more than 20,000 customers and will continue working to restore power to the remaining 7,000 without power Sunday morning and by noon fewer than 4,000 were still without power.

Officials with Cobb EMC reported 135, 154 Cobb County residents were without power Sunday at 4 p.m.