Lead levels in the water supply in Flint, Mich., are within the federally allowed limit, The Associated Press reported Tuesday, citing state officials.

Lead concentration was recorded as 12 parts per billion between July and December 2016, below the 15 parts per billion "action level," the Michigan Department of Environmental Quality wrote in a letter to Flint's mayor, according to the AP.

That puts the city’s water system at a similar level to other U.S. cities and below the 20 parts per billion that was recorded between January and June 2016.

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"This is good news and the result of many partners on the local, county, state and federal levels working together to restore the water quality in the City of Flint," Michigan Department of Environmental Quality Director Heidi Grether said in a statement obtained by the AP.

"The Flint water system is one of the most monitored systems in the country for lead and copper, and that commitment will remain to ensure residents continue to have access to clean water.”

State officials switched the source of the city’s water supply in 2014 from Detroit’s water authority to the Flint River. But residents soon started to complain about the water’s taste and discoloration, and in early 2015 high lead levels were discovered in the water from pipe corrosion, resulting in a public health crisis.

The incident revealed a lack of oversight, and trust in the state’s government remains low among Flint residents.

"The remarkable improvement in water quality over the past year is a testament to all levels of government working together and the resilient people of Flint helping us help them through participation in the flushing programs," Gov. Rick Snyder (R) said in a statement reported by the AP.

"There is still more work to do in Flint, and I remain committed to helping the residents recover and restore their city."