Tampa Water Department

It's due to low levels in the Hillsborough River Reservoir, Tampa's main source of water. The U.S. Drought Monitor says parts of Hillsborough County are under an "extreme drought."

The Tampa Water Department switched to chlorine from liquid oxygen, which was being diverted to area hospitals to treat COVID-19 patients.

The city has not determined what other methods it will use to disinfect water and will continue using chlorine in the meantime.

The boil water notice was lifted Thursday morning after two rounds of tests verified the water is safe to drink.

A boil water order went into effect Monday evening for Tampa, as well as some Hillsborough County communities that receive their water from the city.