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Science 4 June 1976:
Vol. 192. no. 4243, pp. 1004 - 1005
DOI: 10.1126/science.1273580
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Articles

Science, Vol 192, Issue 4243, 1004-1005
Copyright © 1976 by American Association for the Advancement of Science

articles

Wastewater renovation and reuse: virus removal by soil filtration

RG Gilbert, RC Rice, H Bouwer, CP Gerba, C Wallis, and JL Melnick

Secondary sewage effluent and renovated water from four wells at the Flushing Meadows Wastewater Renovation Project near Phoenix, Arizona, in operation since 1967, were assayed approximately every 2 months in 1974 for viruses during flooding periods. Viruses, regularly found in the secondary effluent, were not detected in any renovated water samples. Our results indicated that human viral pathogens do not move through soil into the groundwater, but are apparently absorbed and degraded by the soil and reduced in numbers by a factor of at least 10(4) (99.99 percent removal).




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Science. ISSN 0036-8075 (print), 1095-9203 (online)