phone: 215-938-8781
fax: 215-938-1390
toll-free: 1-800-633-0001


Tower Maintenance Service Co. recognizes and embraces its responsibility to provide and maintain safe and healthy working conditions, free from all recognized hazards, for all its employees.

To achieve our objectives, it is essential that every member of our workforce view safety as a VALUE, instead of a priority. Further, each employee must constantly maintain his or her own personal obligation to observe safe operating procedures.

By enthusiastic support and implementation of this policy, an environment can be created in which all accidents are prevented and our INCIDENT FREE goal becomes a reality.


ISNetworld is a web-based contractor database that helps operators and contractors satisfy governmental and operator specific record keeping requirements, reduces the administrative costs of managing and pre-qualifying contractors, and eliminates the need to maintain multiple contractor databases.


Our employees are TWIC cardholders. TWIC is a Transportation Worker Identification Credential (TWIC™) is a biometric credential that ensures only vetted workers are eligible to enter a secure area of a Maritime Transportation Security Act-regulated port or vessel unescorted.