OHA Drinking Water Services
OR41
PWS ID: 00379 ---- JOINT WATER COMMISSION
System Information     Schedule Counts
Status:  Active
System Type:  Community
Population Served:  400,000		 Active:  14     Show Only Active
Inactive:  0
Expired:  9

Routine Sampling Schedules For Chemicals
Facility
ID		 Name Status Test Group Samples
Required		    Sampling
Interval		 Start End    Notes
CH-A COMMON HEADER FOR WTP-AATOC & ALKALINITY1  Quarterly01/01/2006OpenRaw TOC and alkalinity
DIST-A DISTRIBUTION SYSTEMASTAGE 2 DBP1  Yearly01/01/2012OpenCollect sample in July
EP-A EP FOR TUALATIN RIVERAARSENIC1  9 Years01/01/2011OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP FOR TUALATIN RIVERAHEXACHLOROCYCLOPENTADIENE 1  Yearly01/01/2023OpenSample in 4th quarter Oct - Dec
EP-A EP FOR TUALATIN RIVERAIOC1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP FOR TUALATIN RIVERANITRATE1  Yearly01/01/2002Open
EP-A EP FOR TUALATIN RIVERANITRITE1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP FOR TUALATIN RIVERARAD - GROSS ALPHA1  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP FOR TUALATIN RIVERARAD - RADIUM 226/2281  9 Years01/01/2014Open
EP-A EP FOR TUALATIN RIVERARAD - URANIUM1  9 Years01/01/2008OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP FOR TUALATIN RIVERASOC2  3 Years01/01/2002Open2 Consec. QT Samples
EP-A EP FOR TUALATIN RIVERAVOLATILE ORGANICS1  Yearly01/01/2002Open
SRC-AA TUALATIN RIVERACYANOTOXINS1  2 Weeks07/15/2018Open
WTP-A TP FOR TUALATIN RIVERATOTAL ORGANIC CARBON1  Monthly02/01/2020OpenSample filters 15 & 16 monthly - sample filters 1-14 quarterly
Expired Schedules
CH-ACOMMON HEADER FOR WTP-AATOC & ALKALINITY1  Monthly01/01/200212/31/2005Raw and filtered TOC and alkalinity
DIST-ADISTRIBUTION SYSTEMAHAA5 & TTHM4  Quarterly01/01/200206/30/2008Reflects 4 RT Samples Per QT Per WTP
EP-AEP FOR TUALATIN RIVERAARSENIC1  Yearly01/01/200212/31/2010
EP-AEP FOR TUALATIN RIVERAHEXACHLOROCYCLOPENTADIENE 1  Quarterly01/01/201912/31/2019
EP-AEP FOR TUALATIN RIVERAHEXACHLOROCYCLOPENTADIENE 1  Quarterly01/01/202212/31/2022
EP-AEP FOR TUALATIN RIVERAHEXACHLOROCYCLOPENTADIENE 1  Yearly01/01/202012/31/2021Collect sample between October 1 and December 31.
EP-AEP FOR TUALATIN RIVERARAD - RADIUM 226/2281  6 Years01/01/200812/31/2013
WTP-ATP FOR TUALATIN RIVERATOTAL ORGANIC CARBON1  Monthly01/01/200212/31/2005Post Filtration TOC
WTP-ATP FOR TUALATIN RIVERATOTAL ORGANIC CARBON1  Quarterly01/01/200612/31/2019Post Filtration TOC

More information for this water system: SDWIS ID 3889
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