OHA Drinking Water Services
OR41
PWS ID: 00492 ---- LOWELL, CITY OF

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-B  COMMON HEADER FOR WTP-B TOC & ALKALINITY  Quarterly 01/01/2026 - 03/31/2026 14 1 incomplete12/03/2025
DIST-A  Distribution System ASBESTOS, DIST  9 Years 01/01/2023 - 12/31/2031 2,115 1 incomplete10/24/2022
DIST-A  Distribution System DBP2 HAA5 ONLY notesYearly 01/01/2026 - 12/31/2026 289 1 incomplete12/03/2025
  Seasonal sampling period:   12/01   thru   12/31
DIST-A  Distribution System DBP2 TTHM ONLY notesYearly 01/01/2026 - 12/31/2026 289 1 incomplete10/08/2025
  Seasonal sampling period:   10/01   thru   10/31
DIST-A  Distribution System LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 289 10 incomplete10/17/2025
  Seasonal sampling period:   06/01   thru   09/30
EP-B  EP FOR DEXTER LAKE ARSENIC  9 Years01/01/2020 - 12/31/2028 1,020 1 done 09/21/2022
EP-B  EP FOR DEXTER LAKE IOC notes9 Years 01/01/2023 - 12/31/2031 2,115 1 incomplete09/21/2022
EP-B  EP FOR DEXTER LAKE NITRATE  Yearly 01/01/2026 - 12/31/2026 289 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE NITRITE notes9 Years 01/01/2023 - 12/31/2031 2,115 1 incomplete09/21/2022
EP-B  EP FOR DEXTER LAKE PFAS notesQuarterly 01/01/2026 - 03/31/2026 14 1 incomplete03/16/2022
  Initial monitoring - 4 quarters only
EP-B  EP FOR DEXTER LAKE RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,211 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE RAD - RADIUM 226/228 9 Years 01/01/2023 - 12/31/2031 2,115 1 incomplete09/07/2022
EP-B  EP FOR DEXTER LAKE RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,211 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE SOC  3 Years 01/01/2026 - 12/31/2028 1,020 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 289 1 incomplete10/08/2025
SRC-BA  DEXTER LAKE CYANOTOXINS  2 Weeks-- -- -- -- --10/27/2025
  Seasonal sampling period:   05/01   thru   10/31
WTP-B  TP FOR DEXTER LAKETOTAL ORGANIC CARBON Quarterly01/01/2026 - 03/31/2026 14 1 incomplete 12/03/2025

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