Donnellan Ultraviolet

Since 1999, Donnellan UV (Sunlight Systems) has manufactured ultraviolet (UV) light disinfection machines. Today, we do business as Germicidal Systems (GermSys) and sell our products through authorized resellers.

We design, engineer, manufacturer and distribute products for various markets including wastewater and clean water. Our primary products are Siemens / Sunlight Municipal UV Disinfection Systems and our Teflon style reactor, the NONCON.

We distribute these and other products through UVSYSCO, LLC. For information please visit