OHA Drinking Water Services
OR41
PWS ID: 00722 ---- HILAND WC - BOULDER CREEK

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
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   5 07/25/2024
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP  Quarterly 01/01/2026 - 03/31/2026 19 1 incomplete10/21/2025
EP-A  EP FOR IG AND WELLS ARSENIC notes9 Years 01/01/2026 - 12/31/2034 3,216 1 incomplete03/05/2024
EP-A  EP FOR IG AND WELLS IOC notes9 Years 01/01/2026 - 12/31/2034 3,216 1 incomplete03/05/2024
EP-A  EP FOR IG AND WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 294 1 incomplete03/18/2025
EP-A  EP FOR IG AND WELLS NITRITE notes9 Years 01/01/2026 - 12/31/2034 3,216 1 incomplete03/05/2024
EP-A  EP FOR IG AND WELLS PFAS notesQuarterly 01/01/2026 - 03/31/2026 19 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR IG AND WELLS RAD - GROSS ALPHA  9 Years01/01/2020 - 12/31/2028 1,025 1 done 02/13/2024
EP-A  EP FOR IG AND WELLS RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,216 1 incomplete02/13/2024
EP-A  EP FOR IG AND WELLS RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,216 1 incomplete02/13/2024
EP-A  EP FOR IG AND WELLS SOC  3 Years 01/01/2026 - 12/31/2028 1,025 1 incomplete04/02/2024
EP-A  EP FOR IG AND WELLS VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 294 1 incomplete03/18/2025

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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBON  Monthly01/01/200412/31/20091Raw Water TOC Only Required for Reduction in DBP Monitoring
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200912/31/20121
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200412/31/20081Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/201312/31/20131Sample between June 1 and Sept. 30
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200512/31/20125Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months07/01/201312/31/201410Sampling reduction to be considered after two six-month rounds
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  Yearly01/01/200212/31/20035Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Yearly01/01/201412/31/20221Sample in October
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Yearly01/01/202312/31/20231Sample in October
EP-A  EP FOR IG AND WELLSARSENIC  Yearly01/01/200212/31/20071
EP-A  EP FOR IG AND WELLSIOC  Yearly01/01/200312/31/20051
EP-A  EP FOR IG AND WELLSNITRITE  3 Years01/01/200212/31/20071
EP-A  EP FOR IG AND WELLSRAD - GROSS ALPHA  6 Years01/01/201412/31/20191
EP-A  EP FOR IG AND WELLSRAD - GROSS ALPHA  Quarterly01/01/200812/31/20131

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