William A. Erdman, P.E.


William A. Erdman, P.E. has been selected as the Lehigh Valley Chapter of the Pennsylvania Society of Professional Engineers Engineer of the Year for 2010.  Erdman is the past president of Keystone Consulting Engineers, Inc., a consulting engineering firm that provides surveying and engineering services throughout the Lehigh Valley.  He currently provides municipal engineering services to several townships, boroughs and municipal authorities.


In 1970, Erdman received a bachelorís degree in civil engineering from Drexel University.  He has completed major course work at Lehigh University towards his masterís degree in sanitary engineering.


Following graduation from Drexel, Erdman began working for the G. Edwin Pidcock Company in 1974 where he advanced to chief of the environmental division.


In 1984 he joined Waldraff Associates where he entered into a partnership with Frank Waldraff, P.E. and Kevin Harwick, P.L.S. to form Keystone Consulting Engineers which has evolved into a corporation with 19 shareholders.  Erdman stepped down as CEO and President of the Board of Directors in 2009.  His current primary responsibility is municipal engineering in the capacity of Borough Engineer for the Boroughs of Coopersburg and Macungie, Township Engineer for Lower Macungie Township and Authority Engineer for Upper Macungie Township Authority.


Erdman chose municipal engineering since it provides numerous opportunities for him to participate in projects which benefit many of the communities in the Lehigh Valley.  He takes pride in the wide diversity of municipal projects he has managed during his 37 year career.


As a proponent of community service, Erdman participates in numerous community and civic organizations.† Among his community involvement, Erdman is a member, Paul Harris Fellow and second vice president of the Emmaus Rotary Club, a Board member of the Wildlands Conservancy and St. Lukeís Hospital-Allentown Campus, past president of the Western Lehigh Chamber of Commerce, prior member of the Board of Governors and Executive Committee of the Greater Lehigh Valley Chamber of Commerce, life member of the American Water Works Association, a member of the Lehigh County Board of View and the Steering Committee of Renew Lehigh Valley and secretary of the Forum for Ethics in the Workplace Board of Directors.† He is a member and past president of the Lehigh Valley Chapter of the Pennsylvania Society of Professional Engineers and a member of the Order of the Engineer.


Erdman recognizes the importance of math and science in educating our future engineers and has served as a judge at the Pennsylvania Junior Academy of Sciences and has volunteered at Mathcounts for more than 15 years.


Erdman resides in Orefield with his wife Mary, his son Will and his daughter Mary Kate