In my January column, I began a series focused on chemical and non-chemical additives or technologies that I treat as “must consider” for plumbing engineers in their design practices to reduce the risk of legionella bacteria developing in the domestic water system.

Bringing a child into the world is forever a special experience. However, giving birth is not without stress for many expectant mothers. 

Climate change. Global warming. These continue to be “controversial” terms in today’s world. 

Hundreds of scientific studies over the past century have proven the disinfectant efficacy of Ultraviolet Germicidal Irradiation (UVGI or UV-C) energy, having first inactivated viruses and other microbes on surfaces in 1877, in water in 1910 and in air in 1935.

As I sit writing this column, it has been almost exactly one year since the WHO declared COVID-19 a pandemic and states started implementing lockdowns and stay-at-home orders. 

The DLX-N high-output, dual-lamp ultraviolet NEMA-4 fixture from UV Resources efficiently disinfects HVAC/R airstreams, cooling coils and drain pans, halting infectious diseases such as the SARS-CoV-2 virus.