OHA Drinking Water Services
OR41
PWS ID: 94200 ---- COE DALLES/JD-THE DALLES DAM

See also: Coliform 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 LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   5 07/09/2024
 Seasonal sampling period:  06/01  thru  09/30
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) ARSENIC  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete01/11/2022
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) IOC  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete01/11/2022
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) NITRATE  Yearly 01/01/2025 - 12/31/2025 346 1 incomplete07/01/2024
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) NITRITE  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete01/11/2022
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) SOC  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete01/11/2022
EP-A  EP FOR WELL #1 (IN WASHINGTON STATE) VOLATILE ORGANICS  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete01/11/2022
EP-C  EP for WELL #3 (IN OREGON) ARSENIC notes9 Years01/01/2017 - 12/31/2025 346 1 done 10/18/2022
EP-C  EP for WELL #3 (IN OREGON) IOC  9 Years 01/01/2023 - 12/31/2031 2,537 1 incomplete10/18/2022
EP-C  EP for WELL #3 (IN OREGON) NITRATE  Yearly 01/01/2025 - 12/31/2025 346 1 incomplete07/01/2024
EP-C  EP for WELL #3 (IN OREGON) NITRITE notes9 Years 01/01/2023 - 12/31/2031 2,537 1 incomplete10/18/2022
EP-C  EP for WELL #3 (IN OREGON) SOC  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete10/05/2022
EP-C  EP for WELL #3 (IN OREGON) VOLATILE ORGANICS  3 Years 01/01/2023 - 12/31/2025 346 1 incomplete10/05/2022

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More information for this water system: SDWIS ID 1640
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