OHA Drinking Water Services
OR41
PWS ID: 00719 ---- UMPQUA BASIN WATER ASSOC

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-ATOTAL ORGANIC CARBON Quarterly04/01/2026 - 06/30/2026 60 1 incomplete 01/27/2026
DIST-A  DISTRIBUTION SYSTEM ASBESTOS, DIST notes9 Years01/01/2020 - 12/31/2028 975 1 done 06/22/2022
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 244 20 incomplete08/08/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 244 2 incomplete11/05/2025
  Seasonal sampling period:   11/01   thru   11/30
EP-A  EP FOR NORTH UMPQUA ARSENIC notes9 Years 01/01/2020 - 12/31/2028 975 1 incomplete08/07/2019
EP-A  EP FOR NORTH UMPQUA IOC notes9 Years 01/01/2020 - 12/31/2028 975 1 incomplete08/07/2019
EP-A  EP FOR NORTH UMPQUA NITRATE  Yearly 01/01/2026 - 12/31/2026 244 1 incomplete06/02/2025
EP-A  EP FOR NORTH UMPQUA NITRITE notes9 Years01/01/2020 - 12/31/2028 975 1 done 06/22/2022
EP-A  EP FOR NORTH UMPQUA RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,166 1 incomplete06/21/2018
EP-A  EP FOR NORTH UMPQUA RAD - RADIUM 226/228notes9 Years 01/01/2023 - 12/31/2031 2,070 1 incomplete06/21/2018
EP-A  EP FOR NORTH UMPQUA RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,166 1 incomplete06/21/2018
EP-A  EP FOR NORTH UMPQUA SOC notes3 Years 01/01/2026 - 12/31/2028 975 2 incomplete09/09/2025
EP-A  EP FOR NORTH UMPQUA VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 244 1 incomplete10/03/2025
SRC-AA  NORTH UMPQUA RIVER CYANOTOXINS  2 Weeks 04/19/2026 - 05/02/2026 1 1 incomplete08/15/2022
  Seasonal sampling period:   05/01   thru   10/31

5  secs
Show Expired