||Microorganism Levels in Air Near Spray Irrigation of Municipal Wastewater: The Lubbock Infection Surveillance Study.
Camann, D. E. ;
Moore, B. E. ;
Harding, H. J. ;
Sorber, C. A. ;
||Southwest Research Inst., San Antonio, TX. ;Texas Univ. Medical Branch at Galveston. ;Pittsburgh Univ., PA. School of Engineering.;Health Effects Research Lab., Research Triangle Park, NC.
||EPA-R-807501 ;EPA-S-806204; EPA/600/J-88/392;
Waste water ;
Biological aerosols ;
Coliform bacteria ;
Waste treatment ;
Air pollution effects(Humans)
||Some EPA libraries have a fiche copy filed under the call number shown.
The Lubbock Infection Surveillance Study (LISS) investigated possible adverse effects on human health from slow-rate land application of municipal wastewater. Extensive air sampling was conducted to characterize the irrigation site as a source of infectious microbial aerosols. Spray irrigation of poor-quality wastewater received directly from the treatment plant significantly elevated air densities of fecal coliforms, fecal streptococci, mycobacteria, and coliphage above ambient background levels for at least 200 m downwind. Enteroviruses were repeatedly recovered at 44 to 60 m downwind at a higher level (geometric mean = 0.05 pfu/m3) than observed at other wastewater aerosol sites in the U.S. and in Israel. Wastewater storage in reservoirs reduced downwind air densities of indicator organisms by two orders of magnitude.