If you are concerned that this low concentration may cause problems for you, check with your physician. Even large amounts of chloraminated water used in cleaning a cut would have no effect because virtually no water actually enters the blood stream that way. Chloramines are harmful only when they directly interact with the blood stream in large amounts. Because of the gill structure of fish and other aquatic life, they take chloramines directly into their blood streams. To prevent harm, chloramines must be removed from the water used in fish tanks and ponds.
Chloramines are only harmful to fish and other aquatic life.
Chloramines are harmful to fish and must be removed from water just as chlorine is harmful and must be removed. You may not have to remove chlorine from your aquarium water, however, because it breaks up rapidly on its own. This is not the case with chloramines, so steps should be taken to remove chloramines. Most pet stores have sold de-chlorinating agents for years and generally have recommended using them. These chemicals used to remove chlorine should work just as well for chloramines.