ANSWER:  Before anyone either panics or dismisses this issue out of hand, while there's little definitive evidence that wireless networks cause health problems, they are a very, very new phenomenon and we don't know for sure that they don't.

This web page (https://www.electrosensitivesoc…..-hamilton/) offers some anecdotal evidence that there can be problems for certain people; not everyone, by any means (but then, not everyone who smokes gets cancer and not everyone who drinks is an alcoholic)

In 2007 the German government's anti-pollution watchdog said people should avoid using Wi-Fi in the home because of the risks “electrosmog” may pose to

health. 

One thing is for sure, if Wi-Fi does cause health problems, apartment blocks are where they will be found. In my block of just over 130 units, I can pick up about 12 other networks, one of which is stronger in one of my rooms than my own network (which is, of course, also contributing to the electrosmog).

And then there are the blocks with mobile phone masts and relays on the roof. The  Internet (ironically) is awash with stories of mobile phone antennas being  removed from apartment building roofs because of elevated cancer rates among residents.

But, even though you can prove you have a health issue related to wireless networks in your building, don't expect your neighbours to rush to ban Wi-Fi; this will be seen very much as your problem, not theirs.

So be glad that you are a tenant and consider moving into a smaller, older building with thicker walls and floors where it's less likely to be an issue.  The rest of us, meanwhile, will stew in our own electro-juice.  You just have to look at our choked roads to see that convenience beats common sense every time.