Extract
The relationship between pool water quality and ventilation.
Introduction
In late 1992, the Park Ridge Park District in Illinois, completed construction of a new aquatic center that included an 80,000-gallon lap pool, a 20,000-gallon leisure pool and a 1,300-gallon spa. During the first routine inspection of this facility in January 1993, extremely high levels of chloramines, ranging from two to five parts per million (ppm), were found in both swimming pools. Chloramines, also known as combined chlorine, result from the combination of chlorine and ammonia. They may be organic or inorganic. Under normal conditions, superchlorination, at 10 times the concentration of the chloramine level, is sufficient to bring the pool water to the chlorine breakpoint, releasing the ammonia from the pool water and leaving only free chlorine (1-3). This process is known as "shocking." The State of ...See the full content of this document
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