Our Locations

Hunt Valley, MD (Headquarters)
10710 Gilroy Road
Hunt Valley, MD 21031
Phone: 443-589-2400

Dover, DE
4134 N. Dupont Highway
Dover, DE 19901
Phone: 302-734-9188

New Cumberland, PA
200 Airport Road
New Cumberland, PA 17070
Phone: 717-901-7055

Fairfax, VA (includes Waste Water Management, a division of Century Engineering, Inc.)
2820 Dorr Avenue, Suite 200
Fairfax, VA 22031
Phone (Century): 571-282-4099
Phone (Waste Water Management): 703-846-0098

Oakland, MD
10 North Third Street
Oakland, MD 21550
Phone: 301-334-2305

Newark, DE 
Plaza 273
56 W. Main Street, Suite 100-A
Newark, DE 19702
Phone: 302-525-6022

Conshohocken, PA
20 Ash Street, Suite 370
Conshohocken, PA 19428
Phone: 484-243-6365

Nittany Engineering & Associates, a division of Century Engineering, Inc.
2836 Earlystown Road, Suite 1
Centre Hall, PA 16828
Phone: 814-364-2262

Nittany Engineering & Associates, a division of Century Engineering, Inc.
55 Pierce Lane, Suite 301
Montoursville, PA 17754
Phone: 570-666-4626

Nittany Engineering & Associates, a division of Century Engineering, Inc.
26 S. Second Street, Suite 102
Clearfield, PA 16830
Phone: 814-205-5204

Interstate Acquisition Services, a division of Century Engineering, Inc.
1100 Liberty Avenue, Suite E-205
Pittsburgh, PA 15222
Phone: 412-261-5677

Interstate Acquisition Services, a division of Century Engineering, Inc.
Five Neshaminy Interplex
5 Interplex Drive, Suite 205
Trevose, PA 19053-6968
Phone: 215-245-2960

Interstate Acquisition Services, a division of Century Engineering, Inc.
10 Zions Church Road, Suite 204
Shoemakersville, PA 19555-9500
Phone: 484-660-3630

Interstate Acquisition Services, a division of Century Engineering, Inc.
Finberg Building
200 North Front Street
Suites 102-103
Philipsburg, PA 16866
Phone: 814-342-1070