OHA Drinking Water Services
OR41
PWS ID: 94946 ---- GUIDE DOGS FOR THE BLIND INC

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  6 Months 01/01/2026 - 06/30/2026 117 10 incomplete10/31/2025
DIST-A  Distribution System STAGE 2 DBP notesQuarterly 01/01/2026 - 03/31/2026 26 1 incomplete10/31/2025
EP-A  EP for WELL ARSENIC  9 Years 01/01/2023 - 12/31/2031 2,127 1 incomplete11/17/2022
EP-A  EP for WELL IOC notes9 Years 01/01/2020 - 12/31/2028 1,032 1 incomplete07/21/2015
EP-A  EP for WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 301 1 incomplete11/19/2025
EP-A  EP for WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,032 1 incomplete07/21/2015
EP-A  EP for WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 117 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP for WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,032 1 incomplete06/19/2025
EP-A  EP for WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,032 1 incomplete06/19/2025

7  secs
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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.
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200212/31/20175Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/201812/31/20205extension granted due to wildfire
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/202112/31/20225Sample between June 1 and Sept 30
DIST-A  Distribution SystemSTAGE 2 DBP  Yearly01/01/201412/31/20211Sample in December
EP-A  EP for WELLARSENIC  3 Years01/01/200212/31/20131

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More information for this water system: SDWIS ID 2988
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