Derry Twp Sewer Authority 15 Mill St Yeagertown, PA 17099 Phone : (717) 248-0383 Business Category Government Offices-City Village & Twp Legislative Bodies Derry Twp Sanitary Sewer Authority Yeagertown, PA 17099 Phone : (717) 248-0383 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools