OHA Drinking Water Services
OR41
PWS ID: 00878 ---- TIGARD, CITY OF
System Information     Schedule Counts
Status:  Active
System Type:  Community
Population Served:  62,500
 Active:  42
Inactive:  0
Expired:  16  Show Expired

Routine Sampling Schedules For Chemicals
Facility
ID
Name Status Test Group Samples
Required
   Sampling
Interval
Start End    Notes
DIST-A DISTRIBUTION SYSTEMALEAD & COPPER30  3 Years01/01/2018OpenCollect samples between June 1 and September 30.
DIST-A DISTRIBUTION SYSTEMASTAGE 2 DBP4  Quarterly01/01/2020OpenSample in Feb, May Aug, and Nov
EP-C EP FOR ASR WELL 1AARSENIC1  9 Years01/01/2014OpenSchedule reflects monitoring reduction granted.
EP-C EP FOR ASR WELL 1AIOC1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR ASR WELL 1ANITRATE1  Yearly01/01/2002Open
EP-C EP FOR ASR WELL 1ANITRITE1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR ASR WELL 1APFAS1  Quarterly01/01/2023OpenInitial monitoring - 4 quarters only
EP-C EP FOR ASR WELL 1ARAD - GROSS ALPHA1  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR ASR WELL 1ARAD - RADIUM 226/2281  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR ASR WELL 1ARAD - URANIUM1  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR ASR WELL 1ASOC2  3 Years01/01/2002OpenTwo consecutive quarterly samples.
EP-C EP FOR ASR WELL 1AVOLATILE ORGANICS1  3 Years01/01/2002Open
EP-D EP FOR WELL #2AARSENIC1  9 Years01/01/2014OpenSchedule reflects monitoring reduction granted.
EP-D EP FOR WELL #2AIOC1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-D EP FOR WELL #2ANITRATE1  Yearly01/01/2006Open
EP-D EP FOR WELL #2ANITRITE1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-D EP FOR WELL #2APFAS1  Quarterly01/01/2023OpenInitial monitoring - 4 quarters only
EP-D EP FOR WELL #2ARAD - GROSS ALPHA1  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-D EP FOR WELL #2ARAD - RADIUM 226/2281  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-D EP FOR WELL #2ARAD - URANIUM1  9 Years01/01/2020Open
EP-D EP FOR WELL #2ASOC2  3 Years01/01/2005OpenTwo consecutive quarterly samples.
EP-D EP FOR WELL #2AVOLATILE ORGANICS1  3 Years01/01/2005Open
EP-H EP FOR ASR WELL 2AARSENIC1  9 Years01/01/2014OpenSchedule reflects monitoring reduction granted.
EP-H EP FOR ASR WELL 2AIOC1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-H EP FOR ASR WELL 2ANITRATE1  Yearly01/01/2006Open
EP-H EP FOR ASR WELL 2ANITRITE1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-H EP FOR ASR WELL 2APFAS1  Quarterly01/01/2023OpenInitial monitoring - 4 quarters only
EP-H EP FOR ASR WELL 2ARAD - GROSS ALPHA1  6 Years01/01/2020Open
EP-H EP FOR ASR WELL 2ARAD - RADIUM 226/2281  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-H EP FOR ASR WELL 2ARAD - URANIUM1  6 Years01/01/2023Open
EP-H EP FOR ASR WELL 2ASOC2  3 Years01/01/2017OpenCollect two consecutive quarterly samples.
EP-H EP FOR ASR WELL 2AVOLATILE ORGANICS1  3 Years01/01/2005Open
EP-I EP FOR ASR WELL 3AARSENIC1  3 Years01/01/2023Open
EP-I EP FOR ASR WELL 3AIOC1  3 Years01/01/2023Open
EP-I EP FOR ASR WELL 3ANITRATE1  Yearly01/01/2025Open
EP-I EP FOR ASR WELL 3ANITRITE1  3 Years01/01/2023Open
EP-I EP FOR ASR WELL 3APFAS1  Quarterly01/01/2023OpenInitial monitoring - 4 quarters only
EP-I EP FOR ASR WELL 3ARAD - GROSS ALPHA1  Quarterly04/01/2025Open
EP-I EP FOR ASR WELL 3ARAD - RADIUM 226/2281  Quarterly04/01/2025Open
EP-I EP FOR ASR WELL 3ARAD - URANIUM1  Quarterly04/01/2025Open
EP-I EP FOR ASR WELL 3ASOC1  Yearly01/01/2025Open
EP-I EP FOR ASR WELL 3AVOLATILE ORGANICS1  Yearly01/01/2025Open