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Main Title

Resource document for consideration of the Lewiston Basin Aquifer as a sole source aquifer.

CORP Author

Environmental Protection Agency, Seattle, WA. Office of Ground Water.

Publisher

U.S. Environmental Protection Agency, Region 10, Office of Ground Water,

Year Published

1988

Report Number

EPA 910/9-88-193

Stock Number

PB89-158885

OCLC Number

747504015

Subjects

Aquifers--Washington (State)--Lewiston Basin ; Aquifers--Idaho--Lewiston Basin ; Groundwater--Washington (State)--Lewiston Basin ; Groundwater--Idaho--Lewiston Basin ; Water-supply--Washington (State)--Lewiston Basin ; Water-supply--Idaho--Lewiston Basin

Additional Subjects

Aquifers ; Water supply ; Ground water ; Hydrogeology ; Topography ; Washington(State) ; Water wells ; Basalt ; Idaho ; Populations ; Geology ; Sedimentary rocks ; Ground water recharge ; Surface waters ; Maps ; Lewiston Basin Aquifer ; Drinking water ; Asotin County(Washington)

Internet Access

Description	Access URL
	https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100WRK0.PDF

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
ESAD	EPA 910-9-88-193	2 copies	Region 10 Library/Seattle,WA	06/08/2016
NTIS	PB89-158885	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

[26] p. : ill., maps ; 28 cm.

Abstract

The Asotin County (Washington) Public Utility District petitioned the Environmental Protection Agency (EPA) to declare its drinking water supply as a sole source aquifer under Section 1424(e) of the Safe Drinking Water Act. In response, EPA prepared a document which briefly describes the geology, ground-water hydrology, and drinking water consumption of the Lewiston Basin. The report describes the technical basis for EPA proposing to designate the Lewiston Basin Aquifer System as a sole source aquifer. The Lewiston Basin is an approximately 500 square mile structural and topographic depression in southeastern Washington and western north-central Idaho, including part of the Nez Perce Indian Reservation. Major faults and anticlinal folds form most of the boundaries of the ground-water basin. Ground-water provides about 68 percent of the drinking water consumed in the Lewiston Basin. Community water supply wells all withdraw drinking water from the Grande Ronde Basalt. However, according to the EPA guidelines, those supplies cannot economically serve all those who depend upon the aquifer system for drinking water.

Notes

"April 1988." "EPA 910/9-88-193." Includes bibliographical references (p. 19-20).

Place Published

Seattle, WA

Supplementary Notes