OHA Drinking Water Services
OR41
PWS ID: 00261 ---- DUFUR, 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 ASBESTOS, DIST notes9 Years 01/01/2020 - 12/31/2028 1,030 1 incomplete12/03/2019
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2026 - 12/31/2026   10incomplete09/19/2023
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 299 2 incomplete09/16/2025
  Seasonal sampling period:   09/01   thru   09/30
EP-A  EP FOR WELL #1 & 2 ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,030 1 incomplete04/12/2018
EP-A  EP FOR WELL #1 & 2 IOC notes9 Years 01/01/2020 - 12/31/2028 1,030 1 incomplete08/01/2012
EP-A  EP FOR WELL #1 & 2 NITRATE  Yearly 01/01/2026 - 12/31/2026 299 1 incomplete10/28/2025
EP-A  EP FOR WELL #1 & 2 NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,030 1 incomplete08/01/2012
EP-A  EP FOR WELL #1 & 2 PFAS notes6 Months 01/01/2026 - 06/30/2026 115 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL #1 & 2 RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,221 1 incomplete09/28/2016
EP-A  EP FOR WELL #1 & 2 RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,221 1 incomplete09/28/2016
EP-A  EP FOR WELL #1 & 2 RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,221 1 incomplete10/28/2025
EP-A  EP FOR WELL #1 & 2 SOC  3 Years 01/01/2026 - 12/31/2028 1,030 1 incomplete10/28/2025
EP-A  EP FOR WELL #1 & 2 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,030 1 incomplete10/28/2025

5  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  3 Years01/01/200512/31/20131Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200412/31/20041Sample Between June 1st and Sept 30th Each Year
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200212/31/201910Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/202006/30/202020
EP-A  EP FOR WELL #1 & 2ARSENIC  3 Years01/01/200212/31/20101
EP-A  EP FOR WELL #1 & 2RAD - GROSS ALPHA  6 Years01/01/201112/31/20161
EP-A  EP FOR WELL #1 & 2RAD - GROSS ALPHA  9 Years01/01/200812/31/20101

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