Working at Nalco
Contact Information
Global Nalco LocationsLocal Sales Offices
Energy Services Contacts
Nalco Company
WPS Headquarters
1601 W. Diehl Road
Naperville, Il 60563-1198
630-305-1000 Phone
630-305-2900 Fax
Nalco Energy Services Headquarters
7705 Highway 90-A
Sugar Land, TX 77478
281-263-7000 Phone
E-Verify Employer
Legislation requires employers to verify that all newly hired individuals be authorized to work in the United States and to complete an Employment Verification (Form I-9) for each new associate. Newly hired associates will be required to provide legally acceptable proof of their identity and authorization to work in the US.
E-Verify is an internet based system operated by the Department of Homeland Security (DHS) in partnership with the Social Security Administration (SSA) that allows participating employers to electronically verify the employment eligibility of new hires and the validity of their Social Security Numbers.
Through participation in the E-Verify program, Nalco Company electronically verifies the employment eligibility and Social Security Number validity of all new hires.

