OHA Drinking Water Services
OR41
PWS ID: 00968 ---- YAMHILL, 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  Quarterly 04/01/2026 - 06/30/2026 87 1 incomplete03/18/2026
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER  6 Months 01/01/2026 - 06/30/2026 87 20 incomplete09/19/2025
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 271 1 incomplete11/05/2025
  Seasonal sampling period:   11/01   thru   11/30
EP-A  EP FOR TURNER CREEK ARSENIC  9 Years01/01/2020 - 12/31/2028 1,002 1 done 11/16/2022
EP-A  EP FOR TURNER CREEK IOC notes9 Years01/01/2020 - 12/31/2028 1,002 1 done 11/16/2022
EP-A  EP FOR TURNER CREEK NITRATE  Yearly 01/01/2026 - 12/31/2026 271 1 incomplete09/03/2025
EP-A  EP FOR TURNER CREEK NITRITE notes9 Years01/01/2020 - 12/31/2028 1,002 1 done 11/16/2022
EP-A  EP FOR TURNER CREEK PFAS notesQuarterly 04/01/2026 - 06/30/2026 87 1 incomplete09/04/2025
  Initial monitoring - 4 quarters only
EP-A  EP FOR TURNER CREEK RAD - GROSS ALPHA  9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete04/04/2018
EP-A  EP FOR TURNER CREEK RAD - RADIUM 226/228 9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete04/04/2018
EP-A  EP FOR TURNER CREEK RAD - URANIUM  9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete04/04/2018
EP-A  EP FOR TURNER CREEK SOC  3 Years 01/01/2026 - 12/31/2028 1,002 1 incomplete12/18/2023
EP-A  EP FOR TURNER CREEK VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 271 1 incomplete12/17/2025
WTP-A  TP FOR TURNER CREEKTOTAL ORGANIC CARBON Quarterly04/01/2026 - 06/30/2026 87 1 incomplete 03/18/2026

5  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
CH-A  COMMON HEADER FOR WTP-ATOC & ALKALINITY  Monthly01/01/200412/31/20051Raw and filtered TOC and alkalinity
DIST-A  DISTRIBUTION SYSTEMASBESTOS, DIST  9 Years01/01/200212/31/20191Schedule Reflects Monitoring Reduction Granted
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200412/31/20041Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200509/30/20131Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200212/31/202510
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Quarterly10/01/201306/30/20141Sample in Nov, Feb, May and Aug
EP-A  EP FOR TURNER CREEKARSENIC  Yearly01/01/200212/31/20101
EP-A  EP FOR TURNER CREEKRAD - GROSS ALPHA  6 Years01/01/201712/31/20191
EP-A  EP FOR TURNER CREEKRAD - GROSS ALPHA  9 Years01/01/200812/31/20111Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR TURNER CREEKRAD - RADIUM 226/228  9 Years01/01/200812/31/20191Schedule Reflects Monitoring Reduction Granted
EP-A  EP FOR TURNER CREEKRAD - URANIUM  6 Years01/01/201712/31/20191
EP-A  EP FOR TURNER CREEKRAD - URANIUM  9 Years01/01/200812/31/20111Schedule Reflects Monitoring Reduction Granted
WTP-A  TP FOR TURNER CREEKTOTAL ORGANIC CARBON  Monthly01/01/200412/31/20051Post Filtration TOC

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