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
Inactive:  0
Expired:  9  Show Expired

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

More information for this water system: SDWIS ID 3889
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
New! Visit our new Drinking Water Source Protection page.
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login