Just looked at the FL commercial pool code regarding UV. Looks as though ionization equip must be NSF-50 certified, but that UV is not required to be.
Here's the code:
http://www.doh.state.fl.us/environment/ ... strike.pdf
2. Ionization equipment shall meet the NSF/ANSI Standard 50-2007, Circulation System Components and
Related Materials for Swimming Pools, Spas/Hot Tubs, or equivalent, shall meet UL standards and shall be
electrically interlocked with recirculation pump.
(f) Ultraviolet (UV) light disinfectant equipment may be used as supplemental water treatment on public pools
(and additional treatment on IWFs) subject to the conditions of this paragraph and manufacturer’s specifications.
UV is encouraged to be used to eliminate or reduce chlorine resistant pathogens, especially the protozoan
Cryptosporidium.
1. UV equipment and electrical components and wiring shall comply with the requirements of the
National Electrical Code and the manufacturer shall provide a certification of conformance to the
department.
2. UV equipment shall meet UL standards and shall be electrically interlocked with recirculation pump(s)
on all pools and with feature pump(s) on an IWF such that when the UV equipment fails to produce the
required dosage as measured by an automated sensor, the feature pump(s) are disabled so the water features
do not operate.
3. UV equipment shall be validated by a capable party that it delivers the required and predicted UV dose
at the validated flow, lamp power and water UV transmittance conditions, and has complied with all
professional practices summarized in the USEPA Ultraviolet Disinfectant Guidance Manual dated
November, 2006, which is publication number EPA 815-R-06-007 available from the department at
http://www.floridashealth.org/Environme ... index.html or at
http://www.epa.gov/safewater/disinfecti ... idance.pdf.
4. UV equipment shall constantly produce a validated dosage of at least 40 mJ/cm2 (milliJoules per
square centimeter) at the end of lamp life.
5. The UV equipment shall not be located in a side stream flow and shall be located to treat all water
returning to the pool or water features.