OHA Drinking Water Services
OR41
PWS ID: 00878 ---- TIGARD, CITY OF

See also: Coliform 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
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2026 - 12/31/2026   30incomplete06/14/2023
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesQuarterly 01/01/2026 - 03/31/2026 89 4 incomplete08/05/2025
EP-C  EP FOR ASR WELL 1 ARSENIC notes9 Years01/01/2023 - 12/31/2031 2,190 1 done 07/15/2024
EP-C  EP FOR ASR WELL 1 IOC notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 05/06/2020
EP-C  EP FOR ASR WELL 1 NITRATE  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete07/30/2025
EP-C  EP FOR ASR WELL 1 NITRITE notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 07/15/2024
EP-C  EP FOR ASR WELL 1 RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete05/06/2020
EP-C  EP FOR ASR WELL 1 RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete05/06/2020
EP-C  EP FOR ASR WELL 1 RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete05/06/2020
EP-C  EP FOR ASR WELL 1 SOC notes3 Years 01/01/2026 - 12/31/2028 1,095 2 incomplete10/01/2024
EP-C  EP FOR ASR WELL 1 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete07/15/2024
EP-D  EP FOR WELL #2 ARSENIC notes9 Years01/01/2023 - 12/31/2031 2,190 1 done 10/01/2024
EP-D  EP FOR WELL #2 IOC notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 05/13/2020
EP-D  EP FOR WELL #2 NITRATE  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete07/30/2025
EP-D  EP FOR WELL #2 NITRITE notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 05/13/2020
EP-D  EP FOR WELL #2 RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete06/27/2017
EP-D  EP FOR WELL #2 RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete06/27/2017
EP-D  EP FOR WELL #2 RAD - URANIUM  9 Years01/01/2020 - 12/31/2028 1,095 1 done 05/13/2020
EP-D  EP FOR WELL #2 SOC notes3 Years 01/01/2026 - 12/31/2028 1,095 2 incomplete07/15/2024
EP-D  EP FOR WELL #2 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete07/15/2024
EP-H  EP FOR ASR WELL 2 ARSENIC notes9 Years01/01/2023 - 12/31/2031 2,190 1 done 07/15/2024
EP-H  EP FOR ASR WELL 2 IOC notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 05/06/2020
EP-H  EP FOR ASR WELL 2 NITRATE  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete07/15/2024
EP-H  EP FOR ASR WELL 2 NITRITE notes9 Years01/01/2020 - 12/31/2028 1,095 1 done 07/15/2024
EP-H  EP FOR ASR WELL 2 RAD - GROSS ALPHA  6 Years 01/01/2026 - 12/31/2031 2,190 1 incomplete05/06/2020
EP-H  EP FOR ASR WELL 2 RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,286 1 incomplete05/06/2020
EP-H  EP FOR ASR WELL 2 RAD - URANIUM  6 Years01/01/2023 - 12/31/2028 1,095 1 done 10/01/2024
EP-H  EP FOR ASR WELL 2 SOC notes3 Years 01/01/2026 - 12/31/2028 1,095 2 incomplete10/01/2024
EP-H  EP FOR ASR WELL 2 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete04/08/2024
EP-I  EP FOR ASR WELL 3 ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete
EP-I  EP FOR ASR WELL 3 IOC  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete
EP-I  EP FOR ASR WELL 3 NITRATE  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete
EP-I  EP FOR ASR WELL 3 NITRITE  3 Years 01/01/2026 - 12/31/2028 1,095 1 incomplete
EP-I  EP FOR ASR WELL 3 RAD - GROSS ALPHA  Quarterly 01/01/2026 - 03/31/2026 89 1 incomplete
EP-I  EP FOR ASR WELL 3 RAD - RADIUM 226/228 Quarterly 01/01/2026 - 03/31/2026 89 1 incomplete
EP-I  EP FOR ASR WELL 3 RAD - URANIUM  Quarterly 01/01/2026 - 03/31/2026 89 1 incomplete
EP-I  EP FOR ASR WELL 3 SOC  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete
EP-I  EP FOR ASR WELL 3 VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 364 1 incomplete

7  secs
Show Expired


More information for this water system: SDWIS ID 4076
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
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
PFAS data are now located on the Chemical Results 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
Main menu:
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login