OHA Drinking Water Services
OR41
PWS ID: 00337 ---- ROCK CREEK WATER DISTRICT

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 Years01/01/2028 - 12/31/2028   5 09/24/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 279 1 incomplete09/29/2025
  Seasonal sampling period:   09/01   thru   09/30
EP-A  EP for UNNAMED CREEK ARSENIC notes9 Years 01/01/2026 - 12/31/2034 3,201 1 incomplete08/31/2021
EP-A  EP for UNNAMED CREEK IOC notes9 Years01/01/2020 - 12/31/2028 1,010 1 done 08/31/2021
EP-A  EP for UNNAMED CREEK NITRATE  Yearly 01/01/2026 - 12/31/2026 279 1 incomplete04/07/2025
EP-A  EP for UNNAMED CREEK NITRITE notes9 Years01/01/2020 - 12/31/2028 1,010 1 done 08/31/2021
EP-A  EP for UNNAMED CREEK PFAS notesQuarterly 01/01/2026 - 03/31/2026 4 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP for UNNAMED CREEK RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,201 1 incomplete09/29/2025
EP-A  EP for UNNAMED CREEK RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,201 1 incomplete09/29/2025
EP-A  EP for UNNAMED CREEK RAD - URANIUM  9 Years01/01/2023 - 12/31/2031 2,105 1 done 09/29/2025
EP-A  EP for UNNAMED CREEK SOC  3 Years 01/01/2026 - 12/31/2028 1,010 1 incomplete09/29/2025
EP-A  EP for UNNAMED CREEK VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 279 1 incomplete09/24/2025

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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  Distribution SystemASBESTOS, DIST  9 Years01/01/200201/01/20021Schedule ended 8/10/09 - no more asbestos in distribution - 8/10/09 cg.
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200412/31/20131Sample between June 1 and Sept. 30.
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200201/01/20075Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  6 Months05/01/200710/31/200710
DIST-A  Distribution SystemSTAGE 2 DBP  Quarterly10/01/201609/30/20171Increased monitoring due to results over the MCL for trihalomethanes.
DIST-A  Distribution SystemSTAGE 2 DBP  Yearly01/01/201409/30/20161Sample in September
EP-A  EP for UNNAMED CREEKARSENIC  Yearly01/01/200212/31/20071
EP-A  EP for UNNAMED CREEKRAD - URANIUM  6 Years01/01/200812/31/20131

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