Home Customer Service More in Customer Service Pay Your Bill Emergency Service Rates Notifications Customer Service Pay Your Bill Emergency Service Rates Notifications Upper Southampton Municipal Authority 945 Street Road Southampton, PA 18966 Mailing Address:Upper Southampton Municipal AuthorityP.O. Box 481Southampton, Pennsylvania 18966 Emergencies: (215) 364-1390 Phone: (215) 364-1390 Fax: (215) 364-9410 info@usauthorities.org View Contacts & Directory