OHA Drinking Water Services
OR41
PWS ID: 00548 ---- CLARKS BRANCH WATER ASSOC

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 notesQuarterly 10/01/2025 - 12/31/2025 46 1 incomplete08/05/2025
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER  6 Months 01/01/2026 -   10 future 08/01/2025
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2025 - 12/31/2025   5done 07/24/2025
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesQuarterly 10/01/2025 - 12/31/2025 46 1 incomplete08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER ARSENIC  9 Years01/01/2020 - 12/31/2028 1,142 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER IOC notes9 Years01/01/2020 - 12/31/2028 1,142 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER NITRATE  Yearly01/01/2025 - 12/31/2025 46 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 1,142 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER RAD - GROSS ALPHA  6 Years01/01/2020 - 12/31/2025 46 1 done 10/04/2023
EP-A  EP FOR SOUTH UMPQUA RIVER RAD - RADIUM 226/228 9 Years01/01/2020 - 12/31/2028 1,142 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER RAD - URANIUM  9 Years01/01/2020 - 12/31/2028 1,142 1 done 08/05/2025
EP-A  EP FOR SOUTH UMPQUA RIVER SOC  3 Years01/01/2023 - 12/31/2025 46 1 done 08/03/2023
EP-A  EP FOR SOUTH UMPQUA RIVER VOLATILE ORGANICS notesYearly01/01/2025 - 12/31/2025 46 1 done 07/10/2025
 Seasonal sampling period:  07/01  thru  09/30
SRC-AA  SOUTH UMPQUA RIVER CYANOTOXINS  2 Weeks-- -- -- -- --10/21/2025
 Seasonal sampling period:  05/01  thru  10/31

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More information for this water system: SDWIS ID 3972

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