OHA Drinking Water Services
OR41
PWS ID: 01361 ---- RAINBOW ROCK SERVICE ASSOCIATION

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 LEAD & COPPER notes3 Years01/01/2028 - 12/31/2028   5 08/27/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 305 1 incomplete09/17/2025
  Seasonal sampling period:   09/01   thru   09/30
EP-A  EP FOR CREEK ARSENIC  9 Years 01/01/2020 - 12/31/2028 1,036 1 incomplete08/17/2016
EP-A  EP FOR CREEK IOC notes9 Years 01/01/2020 - 12/31/2028 1,036 1 incomplete08/17/2016
EP-A  EP FOR CREEK NITRATE  Yearly 01/01/2026 - 12/31/2026 305 1 incomplete05/19/2025
EP-A  EP FOR CREEK NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,036 1 incomplete08/17/2016
EP-A  EP FOR CREEK PFAS notesQuarterly 01/01/2026 - 03/31/2026 30 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR CREEK RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,227 1 incomplete11/06/2017
EP-A  EP FOR CREEK RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,227 1 incomplete10/18/2023
EP-A  EP FOR CREEK RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,227 1 incomplete11/06/2017
EP-A  EP FOR CREEK SOC  3 Years 01/01/2026 - 12/31/2028 1,036 1 incomplete07/17/2025
EP-A  EP FOR CREEK VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 305 1 incomplete06/24/2025

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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200412/31/20131Sample between June 1 and Sept. 30.
EP-A  EP FOR CREEKARSENIC  Yearly01/01/200212/31/20091
EP-A  EP FOR CREEKRAD - RADIUM 226/228  6 Years01/01/202012/31/20251
EP-A  EP FOR CREEKRAD - RADIUM 226/228  9 Years01/01/200812/31/20171

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More information for this water system: SDWIS ID 4014
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