Given the task definition and input, reply with output. Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

Westfield's Democratic Mayor Brian Sullivan announced the federal lawsuit against the 3M Co., Chemguard Inc. and Tyco Fire Protection Products on Thursday. The manufacturers produce foam used for years at the Barnes Air National Guard Base and the Westfield-Barnes Regional Airport for firefighter training. The city argues the manufacturers knew or should've known the foam chemicals are "persistent when released into the environment and harmful." The lawsuit doesn't specify how much in damages Westfield seeks, but city solicitor Sue Phillips tells the Westfield News it's "looking to be made whole." St. Paul, Minnesota-based 3M, Marinette, Wisconsin-based Chemguard and Lansdale, Pennsylvania-based Tyco Fire Protection Products haven't commented. Westfield is installing filters to treat the contamination. Two public wells have been closed since 2015.
City sues firefighter foam makers over water contamination.