"Things are dramatically better than they were in 2015", Edwards said. The city has been under a federal state of emergency due to expire later this month.
The city is also in the midst of replacing its lead water service lines estimated to be in the thousands.
Virginia Tech researchers also tested Flint homeowners' water heaters, not only for high lead levels, but also for other contaminants, including the bacteria that causes Legionnaires' disease. The team's work is widely credited with helping to bring new attention to the issue. While the findings showed continued improvement, Edwards urged residents continue the use bottled and filtered water.