"So my political vent. Why do we accept cronyism from either party? Why do we vote for these people?"
Power propagates power. Our system is a huge mess. It does seem as if the tide is at least beginning to turn, and people are realizing they can act to force change.
"Is this an engineering failure at all? Would this be more of an operational person failure? I don't have a problem of us digging into water chemistry, but why do we as engineers want to be associated with this?"
It seems to me that the people who failed to act (EPA, or water department personnel, people at the DEQ, whomever) knew there was a problem and didn't act because of political pressure or in some cases a personal lack of decisiveness.
I would argue that as engineers, we bear a moral responsibility in any safety-critical role to make it clear to decision makers above us (who often may not/do not fully understand the system of set of variables under their control) what is important and what isn't. It seems to me that this situation stems from some failures at the actual number-crunching engineering level, and many more failures at the bureaucratic level, because decision makers failed to empower or listen to their engineers, and the engineers were either incompetent or willing to compromise where they shouldn't have been.
"The thing I see is there was oversight, but they were also not looking. I suspect that the oversight is so complacent with everything being fine, and now they quit looking."
Oversight only works if either A) the people making decisions know what they don't know, and empower their technical staff as a result or B) the decision makers have enough technical knowledge to be a part of the conversation.
It appears to me that in this case, whether you look at the EPA, the MDEQ, the local government, or the state government, neither of the above was true. That's a perfect storm really. These four organizations bear different levels of responsibility with regard to the water quality of this town, but ultimately all of them were in a position to at least mitigate the problem early on, and no one made an attempt, even as the information began to roll in. My suspicion is that if Dr. Mona Hanna-Attisha or the Virginia Tech researchers hadn't dug into this, we might still not be aware.