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 04/01/2026 - 06/30/2026 60 1 incomplete03/04/2026
DIST-A  Distribution System ASBESTOS, DIST  9 Years 01/01/2023 - 12/31/2031 2,070 1 incomplete10/24/2022
DIST-A  Distribution System LEAD & COPPER notesYearly 01/01/2026 - 12/31/2026 244 10 incomplete10/17/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 244 1 incomplete
  Seasonal sampling period:   12/01   thru   12/31
EP-B  EP FOR DEXTER LAKE ARSENIC  9 Years01/01/2020 - 12/31/2028 975 1 done 09/21/2022
EP-B  EP FOR DEXTER LAKE IOC notes9 Years 01/01/2023 - 12/31/2031 2,070 1 incomplete09/21/2022
EP-B  EP FOR DEXTER LAKE NITRATE  Yearly 01/01/2026 - 12/31/2026 244 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE NITRITE notes9 Years 01/01/2023 - 12/31/2031 2,070 1 incomplete09/21/2022
EP-B  EP FOR DEXTER LAKE PFAS notesQuarterly 04/01/2026 - 06/30/2026 60 1 incomplete
  Initial monitoring - 4 quarters only
EP-B  EP FOR DEXTER LAKE RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,166 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE RAD - RADIUM 226/228 9 Years 01/01/2023 - 12/31/2031 2,070 1 incomplete09/07/2022
EP-B  EP FOR DEXTER LAKE RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,166 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE SOC  3 Years 01/01/2026 - 12/31/2028 975 1 incomplete10/08/2025
EP-B  EP FOR DEXTER LAKE VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 244 1 incomplete10/08/2025
SRC-BA  DEXTER LAKE CYANOTOXINS  2 Weeks 04/19/2026 - 05/02/2026 1 1 incomplete08/15/2022
  Seasonal sampling period:   05/01   thru   10/31
WTP-B  TP FOR DEXTER LAKETOTAL ORGANIC CARBON Quarterly04/01/2026 - 06/30/2026 60 1 incomplete 03/04/2026

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