A friend of mine working as a cancer researcher has confirmed that hospitals and workers often dump radioactive wastes DOWN THE DRAIN!

Its only getting worse.

Radioactive Contaminants Beta/photon emitters.
Certain minerals are radioactive and may emit forms of radiation known as photons and beta radiation. Some people who drink water containing beta and photon emitters in excess of the Maximum Contaminant Level over many years may have an increased risk of getting cancer.

Alpha emitters.
Certain minerals are radioactive and may emit a form of radiation known as alpha radiation. Some people who drink water containing alpha emitters in excess of the Maximum Contaminant Level over many years may have an increased risk of getting cancer.

Combined Radium 226/228.
Some people who drink water containing radium 226 or 228 in excess of the Maximum Contaminant Level over many years may have an increased risk of cancer.