PRETTY PRAIRIE, Kan. (AP) — A small south central Kansas town is facing a multi-million bill to fix its aging and contaminated water system.

Leaders in Pretty Prairie, a town of about 680 people in Reno County, say current estimates to repair the city’s water system is $4.63 million.

The Hutchinson News reports city’s council members indicated Monday they want to reduce the size of the project, but the costs would still be in the millions.

A consultant report issued in May said the town’s water in 2013 had an average nitrate level of 19.85 milligrams per liter. The maximum should not exceed 10, and the state health department has put the town on its violation list.

The engineers recommended fixes such as an ion exchange program, lined lagoons, a new water tower.