TheoTown

Sometimes i see a sad face on building and their lowest happiness is environment and
why does the building has pollution, noise (and even radioactive) are here but its in the middle of the residential area??

and yes i keep my industries and nulear plant away from my residential and industrial zones...

any clue?

Probably you built at somekind of already-polluted areas. Likely can cause both pollution and radiation to residential areas near there. So I suggest you evacuate them to another place.

Other than that, probably somekind of a bug....

Well its kinda a new area that I've built on, i haven't do anything with that area before i start expanding my city

Maybe a building burnt down nearby. By choosing pollution or noise view you might be able to spot the source of the bad influences. If it's a bug you may send us the city to info[at]theotown.de so we can do some testing with it

Causes:
Permanent until removed or remedied:
1. Destroyed buildings nearby as Lobby says.
2. Radiation.
Temporary until city is saved and reloaded:
3. Trees destroyed before zoning.
4. Trees planted in zoned areas.
(They are destroyed when new inhabitants build but leave pollution in the area)

Thank you for reporting, planting trees didn't add influences, but removing did remove them. I hoped such bugs wouldn't be present anymore. 217 will fix it

I was using it to know when an area was developing.