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
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 & 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

More information for this water system: SDWIS ID 4065
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