Lower overall bacterial counts
Reduction of spores, like Guardia and Cryptosporidium, which won't be effected by hypochlorite and chlorine
Reduction of Legionella counts in the water
Sparklier water
Oxidation of organics in the water
The picture is an example of the use of a UV installation in a swimming pool. The UV unit in the picture below is treating 380 m3/hour.
The range of UV systems Lenntech can supply is able to treat recirculation rates up to 400 m3/hour.
Read more: http://www.lenntech.com/systems/uv/swimming-pools/uv-pools.htm#ixzz4FOsfL2nS