OHA Drinking Water Services
OR41
PWS ID: 00665 ---- TUALATIN VALLEY WATER DISTRICT
System Information     Schedule Counts
Status:  ACTIVE
System Type:  Community
Population Served:  224,600		 Active:  11     Show Only Active
Inactive:  0
Expired:  16

Routine Sampling Schedules For Chemicals
Facility
ID		 Name Status Test Group Samples
Required		    Sampling
Interval		 Start End    Notes
DIST-A DISTRIBUTION SYSTEMALEAD & COPPER50  Yearly01/01/2024OpenCollect samples between June 1st and Sept 30th
DIST-A DISTRIBUTION SYSTEMASTAGE 2 DBP8  Quarterly04/01/2014OpenSample in June, Sept, Dec, & March
EP-C EP FOR WELL 1 - GRABHORN ASRAARSENIC1  9 Years01/01/2017OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRAIOC1  9 Years01/01/2017OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRANITRATE1  Yearly01/01/2009Open
EP-C EP FOR WELL 1 - GRABHORN ASRANITRITE1  9 Years01/01/2017OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRARAD - GROSS ALPHA1  9 Years01/01/2011OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRARAD - RADIUM 226/2281  9 Years01/01/2014OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRARAD - URANIUM1  9 Years01/01/2014OpenSchedule Reflects Monitoring Reduction Granted
EP-C EP FOR WELL 1 - GRABHORN ASRASOC2  3 Years01/01/2014Open2 Consec. QT Samples
EP-C EP FOR WELL 1 - GRABHORN ASRAVOLATILE ORGANICS1  3 Years01/01/2014Open
Expired Schedules
DIST-ADISTRIBUTION SYSTEMAHAA5 & TTHM8  Quarterly01/01/200212/31/2004Schedule Reflects 4 RT Samples Per QT Per WTP
DIST-ADISTRIBUTION SYSTEMAHAA5 & TTHM2  Quarterly01/01/200503/31/20123 per Quarter When ASR in Use.
DIST-ADISTRIBUTION SYSTEMALEAD & COPPER100  6 Months01/01/200212/31/2016Schedule Reflects PWB Joint Monitoring Plan
DIST-ADISTRIBUTION SYSTEMALEAD & COPPER100  6 Months01/01/201712/31/2017
DIST-ADISTRIBUTION SYSTEMALEAD & COPPER100  6 Months07/01/202212/31/2023
DIST-ADISTRIBUTION SYSTEMALEAD & COPPER50  Yearly01/01/201812/31/2021Sample between June 1st and September 30th
DIST-ADISTRIBUTION SYSTEMASTAGE 2 DBP8  Quarterly04/01/201203/31/2013Sample in March, June, Sept & Dec
DIST-ADISTRIBUTION SYSTEMASTAGE 2 DBP4  Quarterly04/01/201303/31/2014Sample in March, June, Sept & Dec
EP-CEP FOR WELL 1 - GRABHORN ASRAARSENIC1  3 Years01/01/200812/31/2016
EP-CEP FOR WELL 1 - GRABHORN ASRAIOC1  3 Years01/01/200812/31/2016
EP-CEP FOR WELL 1 - GRABHORN ASRANITRITE1  3 Years01/01/200812/31/2016
EP-CEP FOR WELL 1 - GRABHORN ASRARAD - GROSS ALPHA1  Quarterly07/01/200912/31/2010
EP-CEP FOR WELL 1 - GRABHORN ASRARAD - RADIUM 226/2281  Quarterly07/01/200912/31/2011
EP-CEP FOR WELL 1 - GRABHORN ASRARAD - URANIUM1  Quarterly07/01/200912/31/2011
EP-CEP FOR WELL 1 - GRABHORN ASRASOC1  Yearly01/01/200912/31/2012
EP-CEP FOR WELL 1 - GRABHORN ASRAVOLATILE ORGANICS1  Yearly01/01/200912/31/2012

More information for this water system: SDWIS ID 4065
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