The Franklin Institute Research Laboratories, Science Information Services Department, prepared for the Environmental Protection Agency Volume 4 of the Municipal Technology Bulletin, a current-awareness abstracting bulletin covering methods of municipal waste water treatment, problems of water quality, and water pollution control. Volume 4 of the Bulletin contained abstracts of technologically significant literature appearing in print during 1976 and 1977. Under the same grant the Science Information Services Department, as a center of competence on municipal waste water, provided 1320 abstracts, including those appearing in the Bulletin, to the Water Resources Scientific Information Center (WRSIC). The Municipal Technology Bulletin informs researchers, consultants, engineers, and government officials of current developments described in more than 4000 English and non-English language scientific and technical publications. Topics covered in the Bulletin and in the abstracts submitted to WRSIC include: analytical techniques for water quality measurements; biological, chemical, and physical methods of waste water treatment, disposal, and recycling; construction and equipment for pollution control; model studies; storm runoff; tunneling technology and sewer systems; and treatment plant operation and automation. This report is a compilation of the 1320 abstracts arranged consecutively by accession number within subject categories. The report is completed by a journal list and subject and author indices.