While looking for some information on the health effects of a certain water pollutant I came across this from the Natural Resources Defense Council (NRDC):
See Chapter 5 for some great information on contaminants like lead and radon, describing short and long term health effects, safe levels, and what type of filtration will remove these contaminants.
Interestingly, this report does not include chlorine or chloramines, or fluoride, perhaps because they are intentionally added to the water.
Regardless of what is missing, what’s there is a good report worth reading to get a better idea of what might be in your water.