1 If you were born in the United States: Normally you were a U.S. citizen at birth.1 (Including, in most cases, the Commonwealth of Puerto Rico, the territories of Guam and the U.S. Virgin Islands, and after November 4, 1986, the Commonwealth of the Northern Mariana Islands),  If you were born abroad to TWO U.S. citizens:
Chloramines are a type of combined chlorine that form in water and then off gas into the air above the water. Most city, county, and state health departments limit the amount of combined chlorine in the water to 0.4 ppm or less. Chloramines can build up in the water, which means they can build up in the air if there is not enough fresh air surrounding pools and other places people swim in chlorinated water .
Chlorine that is present in water consists of two forms: combined and free. The latter performs the job of oxidizing contaminants and killing bacteria. When chlorine is added to water, it is added as free chlorine. Total chlorine is the sum of both free and combined chlorine. When free chlorine comes into contact with various forms of contaminants, the chlorine is transformed to combined chlorine, also known as chloramines.