According to this story in the Salina Journal (KS):

If Salina city officials aren’t assured soon that action is being taken at the state or federal level to control a large plume of groundwater contamination headed for city wells, the city will take matters into its own hands.

That would mean the city would spend its own money to take action to divert the plume, but the matter is reaching the stage where concerns about who pays for what are secondary, Commissioner Donnie Marrs said at a commission study session Monday.

The U.S. Army Corps of Engineers is in charge of the clean-up, but a consultant hired by city and other local officials determined the corps’ work to date has been frequently incompetent.

[...]

It’s suspected the plume, which has high concentrations of trichloroethylene — better known as TCE — is coming from the former Schilling Air Force Base, which closed in 1965.

The plume has crossed Interstate Highway 135 and is under residential neighborhoods on the city’s southwest side. The consultant estimated that, at its current rate, it will reach city wells within eight years.

Some additional digging reveals the following ongoing coverage of the Salina/Schilling story, also provided by the Salina Journal:

June 2005

• An underground plume heads to Salina
• Vapors at the former Schilling Air Force Base may not require remedation

August 2005

• Is it safe? Citizens group asks for facts regarding water safety surrounding former Schilling Air Force base
• Groundwater Contamination to be discussed
• Tainted air; Contamination from Schilling Air Force base showing up in KSU-Salina buildings

September 2005

• Documents show Air Force left a mess behind

October 2005:

• Contamination beneath downtown Salina; Kansas Department of Health and Environment will begin removing soil


• Will Corps clean up contamination? Corps’ official disputes idea agency won’t clean up former Salina base


• Corps quiet about cleanup; At meeting on cleanup of soil, water, specifics are hard to come by

February 2006

• Is threat to water wells more urgent? Details of study involving contamination at former Schilling Air Force Base


• Cleanup faces obstacles; Without Corps, other resource will be needed


• A plume on the move; Water wells might be threatened sooner

March 2006

• Governor, city set to tackle water woes; Sebelius asks that her staff be updated on contamination at Schilling