EPA Method 1602 is a performance-based method

Laboratories are permitted to modify or omit any steps or procedure

 
 
  • Message from the EPA:  The following is an exact, verbatum statement from the Introduction section of EPA method 1602:  Male-specific (F+) and Somatic Coliphage in Water by Single Agar Layer (SAL) Procedure.

 
 
 
  • "Coliphage presence in ground water is an indication of fecal contamination. Method 1602 is a performance-based method for enumerating male-specific (F+) and somatic coliphage in ground water and other waters.  Laboratories are permitted to modify or omit any steps or procedure, with the exception of the coliphage stock enumeration procedure (Section 11.3), provided that all performance requirements set forth in the validated method are met."