Guidance for the issuance of variances and exemptions.
Contributors: United States. Office of Drinking Water. State Programs Division.
Series: WSG -- 61.; WSG (series) -- 61.
Publisher: Environmental Protection Agency, Office of Drinking Water, Criteria & Standards Division
Published: 1979
Place of publication: Washington
Language: eng
Number of pages: 65
Subjects: Drinking water -- Standards -- United States.
Notes: "Office of Drinking Water, State Programs Division."

May 1979.

Includes bibliographical references.