Clean Water For Military Families Act This bill requires the Department of Defense (DOD) to conduct investigations into releases of perfluoroalkyl and polyfluoroalkyl substances (PFAS) at or surrounding DOD installations located in the United States, formerly used defense sites, and state-owned facilities of the National Guard. PFAS are man-made and may have adverse human health effects. DOD must also conduct response actions relating to PFAS contamination at the mentioned locations if any detection of PFAS exceeds specified standards for contamination or DOD finds remediation to be appropriate to protect human health or the environment.