Horsham, Pa., is one of many towns around the country grappling with potentially harmful chemicals in its water. They’re known as PFAS, and they’re linked to cancer and other illnesses.

Horsham, Pa., is one of many towns around the country grappling with potentially harmful chemicals in its water. They're known as PFAS, and they're linked to cancer and other illnesses.

Horsham, Pa., is one of many towns around the country grappling with potentially harmful chemicals in its water. They’re known as PFAS, and they’re linked to cancer and other illnesses.

Horsham, Pa., is one of many towns around the country grappling with potentially harmful chemicals in its water. They’re known as PFAS, and they’re linked to cancer and other illnesses.