OHA Drinking Water Services
OR41
PWS ID: 00580 ---- NORTH CLACKAMAS COUNTY WC

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 STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 362 1 incomplete08/05/2025
 Seasonal sampling period:  08/01  thru  08/31
EP-B  EP FOR CLACKAMAS RIVER ARSENIC notes9 Years 01/01/2026 - 12/31/2034 3,284 1 incomplete03/22/2024
EP-B  EP FOR CLACKAMAS RIVER IOC notes9 Years01/01/2020 - 12/31/2028 1,093 1 done 03/22/2024
EP-B  EP FOR CLACKAMAS RIVER NITRATE  Yearly 01/01/2026 - 12/31/2026 362 1 incomplete01/15/2025
EP-B  EP FOR CLACKAMAS RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 1,093 1 done 03/22/2024
EP-B  EP FOR CLACKAMAS RIVER RAD - GROSS ALPHA  9 Years 01/01/2020 - 12/31/2028 1,093 1 incomplete03/07/2017
EP-B  EP FOR CLACKAMAS RIVER RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,284 1 incomplete03/07/2017
EP-B  EP FOR CLACKAMAS RIVER RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,284 1 incomplete03/07/2017
EP-B  EP FOR CLACKAMAS RIVER SOC notes3 Years 01/01/2026 - 12/31/2028 1,093 2 incomplete04/12/2023
EP-B  EP FOR CLACKAMAS RIVER VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 362 1 incomplete01/15/2025
SRC-BA  CLACKAMAS RIVER CYANOTOXINS  2 Weeks-- -- -- -- --10/20/2025
 Seasonal sampling period:  05/01  thru  10/31

5  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
CH-B  COMMON HEADER FOR WTP-BTOTAL ORGANIC CARBON  Monthly01/01/200212/31/20051Raw Water TOC Only Required for Reduction in DBP Monitoring
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200412/31/200512
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200606/30/20084All DBP results after 7/1/2008 should goto Oak Lodge (01512)
EP-B  EP FOR CLACKAMAS RIVERARSENIC  Yearly01/01/200212/31/20071
EP-B  EP FOR CLACKAMAS RIVERRAD - GROSS ALPHA  6 Years01/01/201712/31/20191
EP-B  EP FOR CLACKAMAS RIVERRAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-B  EP FOR CLACKAMAS RIVERTOLUENE   Quarterly04/01/202012/31/20201
EP-B  EP FOR CLACKAMAS RIVERVOLATILE ORGANICS  Yearly01/01/200212/31/20191
EP-B  EP FOR CLACKAMAS RIVERVOLATILE ORGANICS  Yearly01/01/202012/31/20201

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More information for this water system: SDWIS ID 4299
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