Federal buildings mandate safer air quality

An anonymous coward writes:
The Federal government now mandates an additional air quality safety standard to be built in to their HVAC systems. It is UV filtration Ultra-Violet filtration very effectively kills airborne germs, bacteria, even mold, as well as other biological contaminants. Commercial buildings as well as homeowners are beginning to utilize this new inexpensive filtration system (under $200) to safeguard employee and family health.