Below is a list of Water Filtering Systems manufacturers from Old Saybrook, Connecticut. Water filtering systems remove contaminants from water through the use of a thin obstruction, various chemicals or other methods. While most commonly used for the purification of drinking water, filtered water is also used for other various purposes, such as in aquariums, irrigation and in swimming pools. Water filtration can also be necessary in some industrial processes such as wet sandblast media reclamation.