Michigan officials are accusing the city of Flint of not using tens of millions of dollars from federal and state grants that were made available to replace its lead service line, the Detroit News reports.

On Wednesday, the Michigan Department of Environmental Quality sent a letter to city officials stating that it drew only $27.2 million of the available $167 million that was given to Flint since early 2017.

According to the state, Flint officials told contractors that they have only enough money to pay them for a partial contract, despite using only 17 percent of available funds, according to the report.

“Recently, the state was notified that the city is issuing partial contracts to SLR (service line replacement) contractors under the premise that the state is withholding funds from the city. This is not accurate,” said DEQ Administration Deputy Director Amy Epkey. Adding that the department “continues to remain concerned by the slow rate of reimbursement requests.”

Hughey Newsome, Flint’s chief finance officer, told the Detroit News that there are delays in replacing the service line because “emergency managers slashed positions.”

Flint’s water has been contaminated in 2014 after the city moved its water source to the Flint River and started using the lead service line, according to the newspaper.