NASHVILLE  (AP) — A recent analysis shows Tennessee has more than $30 million in unspent funds from a federal aid program for improving the nation's drinking water systems.

The review by The Associated Press shows project delays, poor management by some states and structural problems have contributed to nearly $1.1 billion in congressional appropriations sitting unspent in Drinking Water State Revolving Fund accounts as of Aug. 1.

According to the review, Tennessee received $194.2 million in federal funding as of fiscal 2015 from the federal fund. Of that total, $30.4 million remained unspent as of the same fiscal year.

However, Tennessee Department of Environment and Conservation spokesman Eric Ward says TDEC has implemented a new "spending strategy" that has resulted in "significant improvements in the pace of spending."