For over 113 years H&T has been providing water treatment systems around the world with over 13,000 contracts to date. Engineering and Manufacturing, municipal & industrial water treatment systems; Potable Water Filtration systems for Iron, Manganese, Arsenic, Radium, & Hydrogen Sulfide: Ion Exchange for PFAS/PFOS, Nitrates & Hardness: Demineralizers: Condensate Polishers for Boiler Feedwater Systems, Vacuum and Forced Draft Degasifier, GAC Contactors Contact H&T for your water treatment needs.