Officials said customers no longer need to boil water for drinking, cooking and making ice, and that testing showed tap water is meeting all regulatory standards deemed safe for human consumption.
The notice was sent on the heels of recent flooding that had filled the lakes that feed Austin's supply with silt, mud and debris.
At the time the notice was announced last Monday, officials said the water needed extended filtration and treatment before it is safe to consume. There was no indication of bacterial infiltration.
Austin Water's more than 1 million customers received the notice.
The boil-water notice prompted a rush on bottled water at grocery stores such as H-E-B, where shelves were emptied of supplies.
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The boil water notice also meant the city's school districts are being affected. The University of Texas at Austin also advised students not to drink the water from any of the sinks or water fountains.
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For additional information on water post-notice, you can visit the city of Austin site.
The Associated Press contributed to this report.