WA State MatchBack data from 07.31.2019

Below are WA county return information for 07.31.2019 [source]. Some smaller counties (AS, GA, SM, WK, WT) are not yet reporting.  Those counties may not have 2019 Primary election candidates. These totals will change daily. Totals as of 07.31.2019:

   CountyCode   Count     Accepted Received Rejected
   Total        4432473   506618   5634     10048

Statewide turnout is at 11.43% with 506,618 'Accepted' votes. This statistic assumes all counties and precincts are active for this 2019 Primary election and some counties will only have a partial primary. In addition, 'special filing periods' are now open for unfilled races in certain counties: 

   (506618/4432473) * 100
   11.43

Statewide rejection is at 1.93% with 10,048 'Rejected' votes.  Please check https://voter.votewa.gov  | 'Ballot Status' to see whether or not your ballot has been 'Accepted'. If you have not voted yet, do so now please:
   
  (10048/(506618+5634+10048)) * 100
  1.9238

A quick look at the 10 counties with more than 100K registered status active voters shows Spokane,Whatcom and King outdistancing other counties in PCT_Accepted ballots. It also shows Benton county with a comparatively high percentage of rejected ballots: 

Column Totals represent:
Count    # 07.17.2017 Status Active Voters
Accepted # Ready for Tabulation (e.g. 'Turnout')
Received # On conveyor belt for Accepted/Rejected
Rejected # Challenged Ballots
PCT_Accepted=round(Accepted/Count,3) * 100 (e.g. Turnout PCT)
PCT_reject = round(Rejected/(Accepted+Received+Rejected),3)* 100)


See here for list of County Codes with map.