The city of Sacramento has lifted the voluntary boil water advisory for the Pocket area, west of Interstate 5.
Officials say water sampling tests from Monday and Tuesday turned up negative for coliform.
An investigation into the source of the bacteria will continue and there will be an increase in the frequency of water testing in the Pocket Area from one to three times a week.
In a statement, Vice Mayor Richard Jennings says the city's water supply is safe.
"I want to encourage my fellow Pocket/Greenhaven neighhors to enjoy a cold glass of water," says Jenning.
On Sunday, officials announced the advisory after water sampling results showed presence of bacteria. As a precautionary measure, residents were advised to boil water before drinking or cooking.
The city says it plans to continue conducting weekly tests at about 60 sites throughout its entire water system.
-Capital Public Radio Staff