OHA Drinking Water Services
OR41
PWS ID: 00507 ---- MAPLETON WATER DISTRICT

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 CARBONnotesMonthly04/01/2026 - 04/30/2026 8 1 incomplete 02/18/2026
DIST-A  Distribution System ASBESTOS, DIST notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete05/02/2019
DIST-A  Distribution System LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   10 07/23/2024
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 253 1 incomplete10/20/2025
  Seasonal sampling period:   10/01   thru   10/31
EP-A  EP FOR BERKSHIRE CREEK ARSENIC notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete05/02/2019
EP-A  EP FOR BERKSHIRE CREEK IOC notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete05/02/2019
EP-A  EP FOR BERKSHIRE CREEK NITRATE  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete12/17/2025
EP-A  EP FOR BERKSHIRE CREEK NITRITE notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete05/02/2019
EP-A  EP FOR BERKSHIRE CREEK PFAS notesQuarterly 04/01/2026 - 06/30/2026 69 1 incomplete12/18/2025
  Initial monitoring - 4 quarters only
EP-A  EP FOR BERKSHIRE CREEK RAD - GROSS ALPHA notes9 Years01/01/2026 - 12/31/2034 3,175 1 done 01/21/2026
EP-A  EP FOR BERKSHIRE CREEK RAD - RADIUM 226/228notes9 Years01/01/2026 - 12/31/2034 3,175 1 done 01/21/2026
EP-A  EP FOR BERKSHIRE CREEK RAD - URANIUM notes9 Years01/01/2026 - 12/31/2034 3,175 1 done 01/21/2026
EP-A  EP FOR BERKSHIRE CREEK SOC  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete12/17/2025
EP-A  EP FOR BERKSHIRE CREEK VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete12/17/2025

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