I agree with Evil Ronnie that even good places have technical violations.
I worked in a hospital kitchen in Richmond, VA which was not air conditioned at all. On an average summer day, it was 105F+ inside AND the people were assembling 500+ trays in 2 hours. Everyone had water at their station to stay alive. Was it a violation? Sure. The health inspector passed on that one.
I see three issues that are causing a lot of problems in the foodservice industry.
1) First, recent immigrants often come from places that had different health standards. For example, in one Cleveland restaurant, they would pull out a lot of chicken to prepare and they thought nothing of leaving all out as they chopped it into service sized pieces.
2) In my last two assignments in Detroit and St. Louis, most of my utility people COULD NOT READ although they were "high school graduates". We used all Ecolab chemicals and had to train them using a color chart. That worked real fine UNTIL Ecolab changed a couple of the products that caused and the employee did not notice it.
For the record, I was training the people on chemical usage and that's when I realized that they could not read.
3) In Chicago, you have a lot of restaurant management who speak only English. Most employees are non-English speakers. There is often a breakdown in communications.
Having said that, from my experience (outside Chicago), is that MOST health inspectors are very hesitant to close you down unless you have some egregious issues in the operations or are a repeated offender. Therefore, I tend to avoid restaurants with poor records.
I would make one comment now that I am out of the business. I would like to see the McHenry Co. Health Department spend as much time inspecting restaurants in this area that they spend harassing churches and non-profits who wish to have a dinner. I have seen any number of violations at some of the small restaurants that are on-going.