Mystery Chemical in US Drinking Water Could Be Risk to Hundreds of Millions
Hello; The link states that the risk to people is not yet understood. So, an attention grabber so far. My water company uses only chlorine so i am out of it so far.
One of the reasons promoted years ago for chloramine, over chlorine, beyond just it's increased stability, was the risk of trihalomethanes in chlorine treated drinking water. In high amounts THM's have been linked to developmental delays in infants, reproductive effects, liver damage and an increased risk of various cancers. Just having a hot shower, or washing ones hands, can result in significantly higher blood THM concentrations than simply drinking the water .
Tap Water and Trihalomethanes: Flow of Concerns Continues - PMC
THM's in drinking water have been associated with cancer, especially bladder cancer, for many years. The amount of organics in the water would play a major role in how high those THM levels are.
Trihalomethanes in Drinking Water and Bladder Cancer Burden in the European Union - PMC
Our city switched from chlorine to chloramine approx. 25 yrs ago when they built a new water treatment facility. I welcomed the change, still do. Perhaps the lesser of two evils? Who knows? It definitely improved our water quality. Prior to the switch most folks couldn't drink the water during spring run off.
Most of the health risks involved with either/or would be closely related to the residual strength of the disinfectant at ones faucet, the material used in the pipes supplying that water (lead vs clay etc) the organic levels in the water, along with the process used at ones local water treatment facility.
Either way, most of this science involves humans - not finfish. Both chlorine & chloramine, in their pure form, are toxic to fish.