>>12036890okay, so I'm gonna go one by one
>Radiation: radiation badge or geiger counter. Rad health effects are usually long-term, otherwise they're exceptionally nasty and you'd likely be dead already
>tap waterGet a water testing kit. Copper is a common problem, and your water would be a bluish tint. Other metals often have specific testing kits as well. Bacteria, well, you can test if water is potable by culturing a streak plate or something using tap water as a source, but if the bacteria is unculturable, then it won't grow on agar so you'll never know
>infrasoundget sonar equipment, or a microphone or something idk. Personally, this would be a weird one and definitely outside my wheelhouse
>common issuesTop two are lead and mold, by far. I would be concerned about mold, personally, and get a lead testing kit. Mold is tough because it's an apartment so you can't just start ripping up floorboards, but you CAN do some poking around - do you see anything growing? but again it could be hidden from view. There are people who specialize in mold, you can pay someone to inspect for it
My money would be on mold, personally. What symptoms?
