So, what you are expressing is one perspective on accidents, and it's true - the one guy who cares about cleaning up a spill is a good guy, the one guy who hoses it into a drain is a bad guy. I would like to offer another one.
The water is going to take all of the people who did it right, and all of the people who did it wrong, and average their actions together into a single number, the amount of contamination. On the other side, although an individual person can decide whether they're going to make disposing of those batteries easy or a bureaucratic power trip, when you are at the top and are going to fill 1,000 positions like that, you know in advance that some of them are going to be awful about it. So, from the top like from below, individual personal decisions become fixed quantities. Sending out 1,000 people and allowing 250 of them to make the independent personal decision to do it wrong is really the same thing as doing it wrong yourself, because it's guaranteed to happen.
That's essentially the story behind why you should think about accidents as an institutional problem even when they involve bad personal choices on the part of the people who did them. That One Guy is actually hundreds of people and although you can't tell in advance whether one person will do it you know that out of thousands, hundreds will.