OHA Drinking Water Services
OR41
PWS ID: 00549 ---- TRI-CITY JW&SA

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 notesQuarterly 01/01/2026 - 03/31/2026 55 1 incomplete10/21/2025
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST notes9 Years01/01/2020 - 12/31/2028 1,061 1 done 02/11/2020
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2028 - 12/31/2028   20 09/16/2025
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 330 1 incomplete05/05/2025
 Seasonal sampling period:  05/01  thru  05/31
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 330 1 incomplete05/05/2025
 Seasonal sampling period:  11/01  thru  11/30
EP-A  EP FOR SOUTH UMPQUADICHLOROMETHANE Quarterly01/01/2026 - 03/31/2026 55 1 incomplete 10/21/2025
EP-A  EP FOR SOUTH UMPQUABROMATE notesMonthly02/01/2026 - 02/28/2026 24 1 incomplete 10/21/2025
 Seasonal sampling period:  04/01  thru  11/30
EP-A  EP FOR SOUTH UMPQUA ARSENIC  9 Years01/01/2020 - 12/31/2028 1,061 1 done 01/30/2020
EP-A  EP FOR SOUTH UMPQUA IOC notes9 Years01/01/2020 - 12/31/2028 1,061 1 done 01/30/2020
EP-A  EP FOR SOUTH UMPQUA NITRATE  Yearly 01/01/2026 - 12/31/2026 330 1 incomplete01/09/2025
EP-A  EP FOR SOUTH UMPQUA NITRITE notes9 Years01/01/2020 - 12/31/2028 1,061 1 done 01/30/2020
EP-A  EP FOR SOUTH UMPQUA RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,252 1 incomplete02/09/2017
EP-A  EP FOR SOUTH UMPQUA RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,252 1 incomplete02/09/2017
EP-A  EP FOR SOUTH UMPQUA RAD - URANIUM  9 Years01/01/2023 - 12/31/2031 2,156 1 done 10/03/2023
EP-A  EP FOR SOUTH UMPQUA SOC notes3 Years 01/01/2026 - 12/31/2028 1,061 2 incomplete10/05/2023
EP-A  EP FOR SOUTH UMPQUA VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 330 1 incomplete05/05/2025
SRC-AA  SOUTH UMPQUA RIVER CYANOTOXINS  2 Weeks-- -- -- -- --10/27/2025
 Seasonal sampling period:  05/01  thru  10/31
WTP-A  TP FOR SOUTH UMPQUATOTAL ORGANIC CARBON Quarterly01/01/2026 - 03/31/2026 55 1 incomplete 10/21/2025

5  secs
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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  Monthly01/01/200406/30/20051Raw and filtered TOC and alkalinity
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200412/31/20041Schedule Reflects 1 RT Sample Per QT Per WTP
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200509/30/20131Sample between June 1 and Sept. 30.
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Quarterly10/01/201309/30/20162Sample in Nov, Feb, May, and Aug
EP-A  EP FOR SOUTH UMPQUAARSENIC  Yearly01/01/200212/31/20081
EP-A  EP FOR SOUTH UMPQUABROMATE   Monthly03/01/201911/30/20211Sample monthly between May and October
EP-A  EP FOR SOUTH UMPQUARAD - URANIUM  6 Years01/01/200812/31/20131
WTP-A  TP FOR SOUTH UMPQUATOTAL ORGANIC CARBON  Monthly01/01/200412/31/20051Post Filtration TOC

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