It is good for sure. But you are looking for bacterial or chemical contaminants I assume? Are there studies being done on the long term health effects of consuming the chems which keep the water clean? (No dickhead, genuinely curious)
Also, why is there no concensus on chlorine vs chloramine, how some places use one, other use the other?
Contaminants, pathogenic bacterial/planktonic organisms. Regarding long term health studies, i'm not sure, but would expect that there is a monitoring system in place. I can only speak for Scotland.
Chlorine vs chloramine i think would basically come down to two things: cost and taste/odour. Chloramine hangs around longer, so less frequent use/lower amounts required and hence likely lower expenditure. Chloramine isn't as noticeable in water, chlorine can put some people off drinking water.