Our activated carbon filters are engineered to remove unwanted taste, odor, and chlorine from your water supply. This black granular filter carbon is distinguished by its rugged grain structure and high density. The internal structure of the grain consists of a balanced proportion of large to small diameter pores. The pores absorb and retain taste, odor, and chlorine contained in many water supplies. Water should be relatively free of suspended matter and iron for maximum service life. A high pH will not cause Activated Carbon to throw color or decrease in activity. Automatic Periodic backwashing is done to eliminate accumulated suspended matter and reclassify the bed. When total capacity is exhausted, it is necessary to replace the Activated Carbon. Replacement frequencies are determined by severity of inlet water quality.