- At Mangano Sewer & Drain professional contractors do more than just clean your sewers and drains, we also install and chemically treat your pipes for better performance and longer lasting functionality. br br Mangano Sewer & Drain, Inc. br 467 Brook Avenve br Deer Park, NY 11722 br Tel No: 631.586.1200 br Fax No: 631.586.2900 br E-mail Id: Manganosewerndrain@gmail.