The Ground Water and Ecosystems Restoration Division (GWERD) library and its staff provide assistance to EPA researchers and other staff, as well as onsite contractor staff. Assistance is given to other EPA facilities, state, local, and tribal governments, and universities. The library is open to the general public and also provides reference services via phone, fax or E-mail.

The GWERD library holdings consist of over 3,500 books, 7,000 hard-copy documents, on-line access to over 6,300 journals, and over 60,000 federal technical reports on microfiche. Major subject areas include chemical and microbial contamination of ground water, mathematical and computer modeling of contaminants in ground water as they are transported through the subsurface environment, contaminant degradation, and ecosystem restoration.

Contact Information

We are located at:
919 Kerr Research Drive
Ada, OK 74820

We can be contacted at:
Susan Sexton, Task Order Project Manager
Phone: (580) 436-8502
FAX:  (580) 436-8503
E-Mail: gwerd_pub@epa.gov

Mailing Address:
P. O. Box 1198
Ada, OK 74821-1198

Hours of Operation
The Library is open from 9:00 AM - 3:30 PM, Monday through Thursday, excluding federal holidays.

Borrowing Policy and Interlibrary Loans

We lend to the public through Interlibrary Loan. Our materials can also be located through WorldCat.

To locate EPA library and repository materials, you can search the EPA National Library Catalog, EPA Libraries’ online catalog.  If you have any questions, please call or e-mail the library.

Information For Other Libraries: We freely share materials with other libraries via the OCLC Interlibrary Loan system. Our OCLC symbol is EMB and we are members of FEDL (Federal Libraries and Information Centers), LVIS (Libraries Very Interested in Sharing), AMGS (Amigos Resource Sharing Agreement Signers) and OTIS (Oklahoma Group Access Capability). For libraries that do not have OCLC access, please contact the ILL Librarian at 580-436-8502 (phone), 580-436-8503 (fax), or ill.ada@epa.gov for alternate methods.

History of the Library

The Ground Water and Ecosystems Restoration Division Library was originally established in 1966 as part of the Federal Water Pollution Control Administration.  Senate Bill 349 established the right of the Secretary of the Interior to establish and operate a national water resources library located in Ada, Oklahoma, to serve as the national center for the “collection, evaluation, organization, and dissemination of information on all aspects of water resources.”