Sewage treatment plant, wastewater treatment facility, water treatment plant, sewage disposal plant, recycling plant, liquid waste treatment plant, effluent treatment plant, bio-treatment plant, sanitation facility, ecological sewage plant. These are all synonyms for the word "sewage plant". Each of these synonyms emphasizes a certain aspect of the plant's function, whether it is the treatment and disposal of waste, recycling and reuse of water, or the ecological considerations involved in the treatment process. Regardless of the term used, these facilities play a critical role in maintaining the health and safety of our communities and the environment in which we live.