OHA Drinking Water Services
OR41
PWS ID: 00657 ---- PORTLAND WATER BUREAU

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
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST  9 Years01/01/2020 - 12/31/2028 997 1 done 07/11/2023
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 266 50 incomplete06/12/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesQuarterly 04/01/2026 - 06/30/2026 82 12 incomplete11/10/2025
EP-A  EP FOR BULL RUN ARSENIC notes9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete04/22/2025
EP-A  EP FOR BULL RUN IOC notes9 Years01/01/2020 - 12/31/2028 997 1 done 04/22/2025
EP-A  EP FOR BULL RUN NITRATE  Yearly 01/01/2026 - 12/31/2026 266 1 incomplete04/22/2025
EP-A  EP FOR BULL RUN NITRITE notes9 Years01/01/2020 - 12/31/2028 997 1 done 04/22/2025
EP-A  EP FOR BULL RUN PFAS notesQuarterly 04/01/2026 - 06/30/2026 82 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR BULL RUN RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete04/04/2017
EP-A  EP FOR BULL RUN RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete04/04/2017
EP-A  EP FOR BULL RUN RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete05/12/2020
EP-A  EP FOR BULL RUN SOC  3 Years 01/01/2026 - 12/31/2028 997 2 incomplete08/15/2023
EP-A  EP FOR BULL RUN VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 266 1 incomplete04/22/2025
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION ARSENIC  9 Years01/01/2020 - 12/31/2028 997 1 done 07/22/2025
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION IOC  9 Years01/01/2020 - 12/31/2028 997 1 done 07/22/2025
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION NITRATE  Yearly 01/01/2026 - 12/31/2026 266 1 incomplete07/22/2025
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION NITRITE  9 Years01/01/2020 - 12/31/2028 997 1 done 07/22/2025
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION PFAS notesQuarterly 04/01/2026 - 06/30/2026 82 1 incomplete
  Initial monitoring - 4 quarters only
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete02/22/2017
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,188 1 incomplete02/22/2017
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION RAD - URANIUM  9 Years 01/01/2023 - 12/31/2031 2,092 1 incomplete02/22/2017
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION SOC  3 Years 01/01/2026 - 12/31/2028 997 2 incomplete10/02/2023
EP-B GWPS  EP FOR GROUNDWATER PUMP STATION VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 997 1 incomplete07/22/2025

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