OHA Drinking Water Services
OR41
PWS ID: 00823 ---- SILVERTON, 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-A TOC & ALKALINITY notesQuarterly 04/01/2025 - 06/30/2025 73 1 incomplete01/14/2025
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2026 - 12/31/2026   30 06/21/2023
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesQuarterly 04/01/2025 - 06/30/2025 73 2 incomplete01/14/2025
EP-A  EP FOR ABIQUA AND SILVER CREEKS ARSENIC notes9 Years01/01/2017 - 12/31/2025 257 2 done 11/17/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS IOC notes9 Years01/01/2020 - 12/31/2028 1,353 2 done 11/17/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS NITRATE notesYearly01/01/2025 - 12/31/2025 257 2 done 02/24/2025
EP-A  EP FOR ABIQUA AND SILVER CREEKS NITRITE notes9 Years01/01/2020 - 12/31/2028 1,353 2 done 11/17/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS RAD - GROSS ALPHA notes9 Years01/01/2017 - 12/31/2025 257 2 done 11/18/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS RAD - RADIUM 226/228notes9 Years01/01/2017 - 12/31/2025 257 2 done 11/18/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS RAD - URANIUM notes9 Years01/01/2017 - 12/31/2025 257 2 done 11/18/2020
EP-A  EP FOR ABIQUA AND SILVER CREEKS SOC notes3 Years01/01/2023 - 12/31/2025 257 2 done 05/13/2024
EP-A  EP FOR ABIQUA AND SILVER CREEKS VOLATILE ORGANICS notesYearly 01/01/2025 - 12/31/2025 257 2 incomplete05/15/2024
WTP-A  TP FOR CREEKSTOTAL ORGANIC CARBONnotesQuarterly04/01/2025 - 06/30/2025 73 1 incomplete 01/14/2025

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