Chloramine removal from water is simply simple. It can not be done at the treatment facility level. It must be done in the home. Here's why that is true and how you can protect your family.
Chloramines are derivatives of chlorine. Many treatment facilities choose chloramines over chlorine, because the chemicals remain active for a longer period of time. This is an advantage, because it means that they will continue to kill bacteria and prevent algae from clogging the pipelines, all the way from the facility to your household.
In other ways, the extra activity of chloramines is a big disadvantage. One of the things shown by several recent studies is that exposure to disinfection byproducts increases a person's risk of cancer. Some researchers say the risk is unacceptable, but they have yet to come up with a better alternative. Without disinfection, millions of people would likely die from waterborne illnesses on an annual basis.
Research has shown that all disinfecting methods, whether chemical or not, causes the formation of disinfection byproducts, but the amount they produce variants. Chloramines produce more disinfection byproducts, because they disinfect for longer periods of time.
So, that's why you can not get public treatment facilities to remove chloramine. Now, let's look at how to take care of the problem on your own.
Granular carbon or a solid carbon block can be used to remove chlorine or chloramines. Most home water purifiers include a carbon step. A few brands include both granular carbon and a solid carbon block, because the two-step system removes the maximum amount of chemicals. It is possible to remove 99.99% of some chemicals using the two-step system.
Some purifiers will remove chloramine, but not the disinfection byproducts. You can read the company's product performance data in order to find out which chemicals are removed by the system and to what extent they are reduced. When you are looking for disinfection byproducts, they are typically listed as THMs or trihalomethanes, but in some cases, the individual chemical is listed.
If you find the information confusing, contact the manufacturer directly. The better companies have websites and provide email addresses for customers to ask questions.
Chemicals are not the only threats in public water supplies. Because of that, additional steps are included in some purifiers to address issues like cysts and lead. While chloramine removal is important, it is not the only thing you need to be concerned about.