OHA Drinking Water Services
OR41
PWS ID: 00172 ---- CASCADE LOCKS, CITY OF

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 ASBESTOS, DIST notes9 Years01/01/2020 - 12/31/2028 1,034 1 done 12/08/2021
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 303 10 incomplete07/25/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 303 2 incomplete09/17/2024
  Seasonal sampling period:   09/01   thru   09/30
EP-A  EP FOR HERMAN CREEK WELLS ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,034 1 incomplete09/12/2018
EP-A  EP FOR HERMAN CREEK WELLS IOC notes9 Years 01/01/2020 - 12/31/2028 1,034 1 incomplete09/12/2018
EP-A  EP FOR HERMAN CREEK WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 303 1 incomplete11/18/2025
EP-A  EP FOR HERMAN CREEK WELLS NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,034 1 incomplete09/12/2018
EP-A  EP FOR HERMAN CREEK WELLS PFAS notes6 Months 01/01/2026 - 06/30/2026 119 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR HERMAN CREEK WELLS RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,225 1 incomplete04/20/2023
EP-A  EP FOR HERMAN CREEK WELLS RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,225 1 incomplete04/20/2023
EP-A  EP FOR HERMAN CREEK WELLS RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,225 1 incomplete04/20/2023
EP-A  EP FOR HERMAN CREEK WELLS SOC  Yearly 01/01/2026 - 12/31/2026 303 1 incomplete10/09/2024
EP-A  EP FOR HERMAN CREEK WELLS VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 303 1 incomplete11/18/2025

6  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  3 Years01/01/200512/31/20131Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200412/31/20041Sample Between June 1st and Sept 30th Each Year
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200212/31/201510Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/201612/31/202120
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/202212/31/202220
EP-A  EP FOR HERMAN CREEK WELLSARSENIC  3 Years01/01/200212/31/20101
EP-A  EP FOR HERMAN CREEK WELLSRAD - GROSS ALPHA  9 Years01/01/200812/31/20211
EP-A  EP FOR HERMAN CREEK WELLSRAD - GROSS ALPHA  Quarterly04/01/202203/31/20231
EP-A  EP FOR HERMAN CREEK WELLSRAD - RADIUM 226/228  6 Years01/01/201412/31/20191
EP-A  EP FOR HERMAN CREEK WELLSRAD - RADIUM 226/228  Quarterly04/01/202203/31/20231
EP-A  EP FOR HERMAN CREEK WELLSRAD - URANIUM  6 Years01/01/201412/31/20191
EP-A  EP FOR HERMAN CREEK WELLSRAD - URANIUM  9 Years01/01/202012/31/20211
EP-A  EP FOR HERMAN CREEK WELLSRAD - URANIUM  Quarterly01/01/201112/31/20131
EP-A  EP FOR HERMAN CREEK WELLSRAD - URANIUM  Quarterly04/01/202203/31/20231
EP-A  EP FOR HERMAN CREEK WELLSSOC  3 Years01/01/200212/31/20211
EP-A  EP FOR HERMAN CREEK WELLSVOLATILE ORGANICS  3 Years01/01/200212/31/20211

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More information for this water system: SDWIS ID 3260
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