Air Force alone in halting use of foam that tainted wells

The Air Force said last week that it would stop using the potentially dangerous firefighting foam that over years contaminated some local water supplies, but no other military branch has a public plan to ban the foam at its bases.

Since 2014, 16 wells have been closed in Bucks and Montgomery Counties after they were found to be tainted with PFOA and PFOS, chemicals linked to cancer that leached into local water supplies from firefighting foam used at two now-closed naval air bases. The military is investigating potential contamination at more than 600 bases nationwide.