OHA Drinking Water Services
OR41
PWS ID: 00932 ---- WARRENTON, CITY OF

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-ATOTAL ORGANIC CARBON Quarterly01/01/2026 - 03/31/2026 33 1 incomplete 04/08/2025
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST  9 Years01/01/2023 - 12/31/2031 2,134 1 done 04/03/2024
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   20 09/03/2024
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP  Quarterly 01/01/2026 - 03/31/2026 33 2 incomplete10/22/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) ARSENIC notes9 Years01/01/2020 - 12/31/2028 1,039 1 done 02/10/2021
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) IOC notes9 Years01/01/2020 - 12/31/2028 1,039 1 done 02/10/2021
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) NITRATE notesYearly 01/01/2026 - 12/31/2026 308 1 incomplete02/11/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) NITRITE notes9 Years01/01/2020 - 12/31/2028 1,039 1 done 02/10/2021
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,230 1 incomplete03/12/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,230 1 incomplete03/12/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,230 1 incomplete03/12/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) SOC notes3 Years 01/01/2026 - 12/31/2028 1,039 2 incomplete10/15/2025
EP-A  EP FOR WTP (LEWIS & CLARK RIVER/CREEK) VOLATILE ORGANICS notesYearly 01/01/2026 - 12/31/2026 308 1 incomplete05/20/2025

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More information for this water system: SDWIS ID 3918

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