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I called 1000bulbs.com and asked for UV lights so we could disinfect the church and they told me flat out that UV light will not work on COVID and if it did they would be making a fortune.

Ultraviolet Radiation (UV)
The wavelength of UV radiation ranges from 328 nm to 210 nm (3280 A to 2100 A). Its maximum bactericidal effect occurs at 240–280 nm. Mercury vapor lamps emit more than 90% of their radiation at 253.7 nm, which is near the maximum microbicidal activity 775. Inactivation of microorganisms results from destruction of nucleic acid through induction of thymine dimers. UV radiation has been employed in the disinfection of drinking water 776, air 775, titanium implants 777, and contact lenses778. Bacteria and viruses are more easily killed by UV light than are bacterial spores 775. UV radiation has several potential applications, but unfortunately its germicidal effectiveness and use is influenced by organic matter; wavelength; type of suspension; temperature; type of microorganism; and UV intensity, which is affected by distance and dirty tubes779. The application of UV radiation in the health-care environment (i.e., operating rooms, isolation rooms, and biologic safety cabinets) is limited to destruction of airborne organisms or inactivation of microorganisms on surfaces. The effect of UV radiation on postoperative wound infections was investigated in a double-blind, randomized study in five university medical centers. After following 14,854 patients over a 2-year period, the investigators reported the overall wound infection rate was unaffected by UV radiation, although postoperative infection in the “refined clean” surgical procedures decreased significantly (3.8%–2.9%) 780. No data support the use of UV lamps in isolation rooms, and this practice has caused at least one epidemic of UV-induced skin erythema and keratoconjunctivitis in hospital patients and visitors 781.

https://www.cdc.gov/infectioncontrol/guidelines/disinfection/disinfection-methods/miscellaneous.html

That is true of ordinary UV light. It is not true of sterilizers using light only in the UV-C spectrum, which is unfortunately injurious to human vision. That makes it too hazardous to use in sterilizing rooms.

The Chinese use huge bus barns with roll-up doors with huge UV-C lights to sterilize 6-10 buses at a time, in two long lines, with humans excluded from the whole building. They roll the buses in at night when they're out of service. I don't know how long the buses are stuck in there.

And there are small box-shaped UV-C sterilizers for sterilizing small items like N95 masks. I have a foldable one. It has an opague plastic fabric around it.

Whether ultraviolet radiation is, or can be effective against Covid-19, seems to be an as yet unanswered question. Here is some current research at Columbia University that its researchers thing could be a game changer.

Could a New Ultraviolet Technology Fight the Spread of Coronavirus?

And there are a lot of UV-C lights being advertised, and while they mention Covid-19, they don't specifically say that their products will definitely kill Covid-18.

And this from your quote from the CDC.

The application of UV radiation in the health-care environment (i.e., operating rooms, isolation rooms, and biologic safety cabinets) is limited to destruction of airborne organisms or inactivation of microorganisms on surfaces.

That's just what many consumers are looking for, IF it will kill Covid-19. I think that is still to be answered in the near future. It also sounds like not a great deal of testing has been done to determine what will, or will not kill it.