It's also supposed to be part of the maintannence of the pitches - to disinfect them but I don't see much maintenance go into the Wakefield turfs. Hopefully Petone and Cap Football manage the Memorial Park one better.
I've asked people who work at the council and as far as they are aware there is no disinfectant spray program in place. It is a requirement as far as I know, so hopefully it's not something that they are simply trying to cut costs on.
I haven't been able to find out how often the surfaces get groomed/decompacted but one person I talked to at the council suggested that it probably isn't done frequently enough.
I was at the Central League AGM last year and there was a bit of talk about the arties. One of the main questions was whether people thought watering them prior to games would be a good idea and pretty much everyone agreed it would be. I'm not sure if it was followed up on but I wonder if they are still considering it. I'm guessing they only intend to do this for the higher leagues. IMO this would not only reduce the problems with skin abrasion but would also provide a bit more give under foot which should reduce stress/injuries on the joints.
Some maintenance processes here:
http://www.themotzgroup.com/synthetic-turf/smp-synthetic-maintenance-program
Disinfection:
http://psfs.us/natural_cleanser_and_disinfectant_for_turf_and_all_sports_surfaces