Hi MrBosnia,
Unfortunately, your only resort against squalor, once you have it, is building heath buildings, as you have said. I do believe, however, that they do not actually resolve squalor and instead simply counter-act and, over time phase their good out by piling huge amounts of population upon your settlement creating a worse squalor issue. You could also upgrade the Governor's palace, yet that can make things worse in the long run too.
The best thing I find if the problem is too out of hand is abandoning the settlement and then returning to exterminate the populace. I am afraid to say that I don't think that there are any cheats to resolve this and the only way of solving it is to avoid population growth in the first place. This can be done by not upgrading farms, avoiding health buildings and temples which promote growth. Sadly this places you at a disadvantage, it will take longer to gain better military units and trade networks, so in a few provinces you could allow fast growth to gain a stronger empire.
May I also suggest that you try rebalancing the population. Simply train many units of peasants in your largest cities and disband them in your smaller ones. This migration moves men from the large city, that could do with less people in the populace, to a smaller one that requires the population to expand.Simply when your almighty popular standing gets above eight shields. However, beware, the other Roman factions can declare civil war when they get eight popularity with the people shields too. Also bear in mind that the civil war can start earlier when you do not have eight shields with the people. If you have two or less with the senate then they are quite likely to demand your faction leader's suicide - in that case, should you refuse, then the great war begins!Don't worry! It won't last for too much longer. You are currently a Junior Member which means you don't get the same privileges as full Members/Senior Members at this time. However, once you do become a full member, through good and sensible contributions, you can have a wonderful fifteen second flood control. If you desire more information then feel free to read
the FAQ in the Entrance Hall.
Hope this helps you, cheers!
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