OHA Drinking Water Services
OR41
PWS ID: 00953 ---- WILLAMINA, CITY OF

See also: Coliform Schedules  ::  LT2 Schedules

Chemical Sampling Schedule Status
Facility
ID		 Analyte or Group   Sampling
Interval		 Monitoring Period Days
Until
End		 Samples
Required		 Samples
Received		 Last
Sample
Date
Start End
CH-A  COMMON HEADER FOR WTP-A TOC & ALKALINITY  Quarterly01/01/2025 - 03/31/2025 59 1 done 01/14/2025
DIST-A  Distribution System ASBESTOS, DIST  9 Years01/01/2017 - 12/31/2025 334 1 done 10/10/2019
DIST-A  Distribution System LEAD & COPPER notes3 Years01/01/2025 - 12/31/2025   10incomplete08/18/2022
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2025 - 12/31/2025 334 1 incomplete10/07/2024
 Seasonal sampling period:  10/01  thru  10/31
EP-A  EP FOR WILLAMINA CREEK ARSENIC  9 Years01/01/2020 - 12/31/2028 1,430 1 done 01/28/2020
EP-A  EP FOR WILLAMINA CREEK IOC notes9 Years01/01/2020 - 12/31/2028 1,430 1 done 01/28/2020
EP-A  EP FOR WILLAMINA CREEK NITRATE  Yearly01/01/2025 - 12/31/2025 334 1 done 01/14/2025
EP-A  EP FOR WILLAMINA CREEK NITRITE notes9 Years01/01/2020 - 12/31/2028 1,430 1 done 01/28/2020
EP-A  EP FOR WILLAMINA CREEK RAD - GROSS ALPHA notes9 Years 01/01/2023 - 12/31/2031 2,525 1 incomplete01/28/2020
EP-A  EP FOR WILLAMINA CREEK RAD - RADIUM 226/228notes9 Years 01/01/2017 - 12/31/2025 334 1 incomplete01/28/2014
EP-A  EP FOR WILLAMINA CREEK RAD - URANIUM notes9 Years 01/01/2023 - 12/31/2031 2,525 1 incomplete01/28/2020
EP-A  EP FOR WILLAMINA CREEK SOC  3 Years01/01/2023 - 12/31/2025 334 1 done 01/30/2023
EP-A  EP FOR WILLAMINA CREEK VOLATILE ORGANICS  Yearly 01/01/2025 - 12/31/2025 334 1 incomplete02/07/2024
WTP-A  TP FOR WILLAMINA CREEKTOTAL ORGANIC CARBON Quarterly01/01/2025 - 03/31/2025 59 1 done 01/14/2025

7  secs
Show Only Active

Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
CH-A  COMMON HEADER FOR WTP-ATOC & ALKALINITY  Monthly01/01/200412/31/20051Raw and filtered TOC and alkalinity
DIST-A  Distribution SystemASBESTOS, DIST  3 Years01/01/200212/31/20071
DIST-A  Distribution SystemHAA5 & TTHM  Quarterly01/01/200412/31/20041Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200509/30/20131Sample between June 1 and Sept. 30.
DIST-A  Distribution SystemLEAD & COPPER  Yearly01/01/200212/31/200210Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemSTAGE 2 DBP  Quarterly10/01/201312/31/20161Sample in Oct, Jan, Apr, and July
EP-A  EP FOR WILLAMINA CREEKARSENIC  Yearly01/01/200212/31/20101
EP-A  EP FOR WILLAMINA CREEKRAD - GROSS ALPHA  6 Years01/01/201712/31/20221
EP-A  EP FOR WILLAMINA CREEKRAD - GROSS ALPHA  9 Years01/01/201412/31/20161Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR WILLAMINA CREEKRAD - GROSS ALPHA  Quarterly01/01/201003/31/20111
EP-A  EP FOR WILLAMINA CREEKRAD - RADIUM 226/228  6 Years01/01/201412/31/20161
EP-A  EP FOR WILLAMINA CREEKRAD - RADIUM 226/228  Quarterly01/01/201003/31/20111
EP-A  EP FOR WILLAMINA CREEKRAD - URANIUM  Quarterly01/01/201003/31/20111
SRC-AA  WILLAMINA CREEKCYANOTOXINS  2 Weeks07/15/201801/24/20191
WTP-A  TP FOR WILLAMINA CREEKTOTAL ORGANIC CARBON  Monthly01/01/200412/31/20051Post Filtration TOC

Show Only Active


More information for this water system: SDWIS ID 4690
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
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