Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of Geostatistical Methods for Estimating Virus Inactivation Rates in Ground Water.
Author Yates, M. V. ; Yates, S. R. ;
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK.
Year Published 1987
Report Number EPA/600/J-87/353;
Stock Number PB88-218367
Additional Subjects Enteroviruses ; Ground water ; Septic tanks ; Water pollution ; Mathematical prediction ; Statistics ; Temperature ; Water wells ; Survival ; Reprints ; Water pollution effects(Humans) ; Path of pollutants ; Waterborne diseases
Library Call Number Additional Info Location Last
NTIS  PB88-218367 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 12/29/1988
Collation 9p
Enteric viruses are responsible for a large number of ground-waterborne disease outbreaks every year. Septic tanks are the most frequently cited causes of ground-water contamination in disease outbreaks. Controlling the placement of septic tanks such that all viruses would be non-infective by the time the effluent reached drinking water wells would likely reduce the number of waterborne viral disease outbreaks. The study compares different geostatistical techniques (kriging, cokriging, and combined kriging and regression) that estimate virus inactivation rates in ground water. These estimates were used with the regional ground-water flow characteristics to estimate septic tank setback distances over a city-wide area. Combined kriging and regression, which eliminates the need for laboratory values of virus inactivation rates by using the linear regression relationship between temperature and inactivation rates, produced comparable results to the other two methods, yet reduced the cost of the analysis considerably.