Investors should note that PFA regulations are likely to mean good business for activated carbon manufacturers. That is the best known treatment for contaminated water.
Calgon Carbon in Pittsburgh is probably the leader. Once they were part of Merck, spun off, acquired by Nalco, part of Credit Suez.
Water treatment companies are likely to benefit.
Kuraray Ltd of Japan now owns Calgon. Another player is Cabot maker of Darco and Norit activated carbon.