Guidance manual for conducting sanitary surveys of public water systems
Subtitle: surface water and ground water under the direct influence (GWUDI) of surface water.
Contributors: United States. Environmental Protection Agency. Office of Water.
Publisher: U.S. Environmental Protection Agency, Office of Water
Published: 1999
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Groundwater -- United States
Other titles: Surface water and ground water under the direct influence (GWUDI) of surface water.
Notes: "April 1999."

Includes bibliographical references.