OHA Drinking Water Services
OR41
PWS ID: 00624 ---- PHILOMATH PUBLIC WORKS

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 61 1 incomplete01/20/2026
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   20 08/16/2024
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 245 1 incomplete11/03/2025
  Seasonal sampling period:   08/01   thru   08/31
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 245 1 incomplete11/03/2025
  Seasonal sampling period:   11/01   thru   11/30
EP-A  EP FOR MARY'S RIVER ARSENIC  9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-A  EP FOR MARY'S RIVER IOC notes9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-A  EP FOR MARY'S RIVER NITRATE  Yearly01/01/2026 - 12/31/2026 245 1 done 01/20/2026
EP-A  EP FOR MARY'S RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-A  EP FOR MARY'S RIVER PFAS notesQuarterly 04/01/2026 - 06/30/2026 61 1 incomplete11/20/2023
  Initial monitoring - 4 quarters only
EP-A  EP FOR MARY'S RIVER RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,167 1 incomplete02/19/2019
EP-A  EP FOR MARY'S RIVER RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,167 1 incomplete02/19/2019
EP-A  EP FOR MARY'S RIVER RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,167 1 incomplete02/19/2019
EP-A  EP FOR MARY'S RIVER SOC notes3 Years 01/01/2026 - 12/31/2028 976 2 incomplete10/28/2024
EP-A  EP FOR MARY'S RIVER VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 245 1 incomplete03/18/2025
EP-B  EP FOR 11TH STREET WELL ARSENIC  9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-B  EP FOR 11TH STREET WELL IOC notes9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-B  EP FOR 11TH STREET WELL NITRATE  Yearly01/01/2026 - 12/31/2026 245 1 done 01/20/2026
EP-B  EP FOR 11TH STREET WELL NITRITE notes9 Years01/01/2020 - 12/31/2028 976 1 done 03/09/2021
EP-B  EP FOR 11TH STREET WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 61 1 incomplete
  Initial monitoring - 2 samples only
EP-B  EP FOR 11TH STREET WELL RAD - GROSS ALPHA  6 Years01/01/2023 - 12/31/2028 976 1 done 04/01/2024
EP-B  EP FOR 11TH STREET WELL RAD - RADIUM 226/228 6 Years01/01/2023 - 12/31/2028 976 1 done 04/01/2024
EP-B  EP FOR 11TH STREET WELL RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,167 1 incomplete04/10/2017
EP-B  EP FOR 11TH STREET WELL SOC notes3 Years 01/01/2026 - 12/31/2028 976 2 incomplete10/28/2024
EP-B  EP FOR 11TH STREET WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 976 1 incomplete03/06/2023
WTP-A  TP FOR MARY'S RIVERTOTAL ORGANIC CARBON Quarterly04/01/2026 - 06/30/2026 61 1 incomplete 01/20/2026

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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 SYSTEMHAA5 & TTHM  Quarterly01/01/200409/30/20091Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly04/01/201106/30/20121Qtrly for DBP16 only. DBPMax01 and DBP11 annually.
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/201003/31/20112Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/201309/30/20133Sample between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Quarterly10/01/201309/30/20142Sample in Nov, Feb, May, and Aug
EP-A  EP FOR MARY'S RIVERARSENIC  Yearly01/01/200212/31/20091
EP-B  EP FOR 11TH STREET WELLARSENIC  3 Years01/01/200212/31/20091
EP-B  EP FOR 11TH STREET WELLRAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-B  EP FOR 11TH STREET WELLRAD - RADIUM 226/228  9 Years01/01/200812/31/20161
SRC-AA  MARY'S RIVERCYANOTOXINS  2 Weeks07/15/201801/24/20191
WTP-A  TP FOR MARY'S RIVERTOTAL ORGANIC CARBON  Monthly01/01/200412/31/20051Post Filtration TOC

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