5.5 SHOWERING INADVERTENT INGESTION


    This pathway requires the general shower exposure parameters, as defined in the above section, for the shower water dermal contact pathway (holdup time, event time, and frequency), plus the rate at which water is inadvertently ingested while showering. Default values for parameters for this pathway are given in Table 5.5.

    The water ingestion rates are set to give a total intake of 0.01 L per shower to be consistent with the initial MEPAS model.

TABLE 5.5 Shower Inadvertent Ingestion Parameter Default Values
Parameter
  
Definition
  
Units
  
Default Value
           
Individual
  
Population
Thdw   water system holdup time   d  
0.5
  
0.5
TEs   shower event time   h/shower  
0.167
  
0.167
Fsw   time fraction    -(a)  
1.0
  
1.0
FEsh   shower frequency   shower/d  
1.0
  
1.0
Usw   water ingestion rate   L/h  
0.06
  
0.06
(a) Dash indicates not applicable.