OHA Drinking Water Services
OR41
PWS ID: 95088 ---- NANTUCKET SHORES

See also: Coliform 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
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER  6 Months 01/01/2026 - 06/30/2026 79 10 incomplete09/22/2025
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 263 2 incomplete06/25/2024
  Seasonal sampling period:   06/01   thru   09/30
EP-B  EP FOR WELLS 4-6 ARSENIC  3 Years 01/01/2026 - 12/31/2028 994 1 incomplete
EP-B  EP FOR WELLS 4-6 IOC  3 Years 01/01/2026 - 12/31/2028 994 1 incomplete
EP-B  EP FOR WELLS 4-6 NITRATE  Yearly 01/01/2026 - 12/31/2026 263 1 incomplete12/10/2025
EP-B  EP FOR WELLS 4-6 NITRITE  3 Years 01/01/2026 - 12/31/2028 994 1 incomplete
EP-B  EP FOR WELLS 4-6 PFAS notes6 Months 01/01/2026 - 06/30/2026 79 1 incomplete
  Initial monitoring - 2 samples only
EP-B  EP FOR WELLS 4-6 RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete09/22/2025
EP-B  EP FOR WELLS 4-6 RAD - RADIUM 226/228 Quarterly 04/01/2026 - 06/30/2026 79 1 incomplete09/22/2025
EP-B  EP FOR WELLS 4-6 RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,185 1 incomplete09/22/2025
EP-B  EP FOR WELLS 4-6 SOC  Yearly 01/01/2026 - 12/31/2026 263 1 incomplete11/03/2025
EP-B  EP FOR WELLS 4-6 VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 263 1 incomplete11/03/2025

6  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months07/01/202112/31/20225
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  Yearly01/01/202312/31/20245
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Yearly01/01/202112/31/20232Collect two dual sample sets between June 1st and Sept 30th in 2023; one from a location expected to have the highest HAA5 concentrations and one from the location expected to have highest TTHM.
EP-A  EP FOR WELL #3ARSENIC  3 Years01/01/202009/09/20251
EP-A  EP FOR WELL #3IOC  3 Years01/01/202009/09/20251
EP-A  EP FOR WELL #3NITRATE  Yearly01/01/200203/15/20051
EP-A  EP FOR WELL #3NITRATE  Yearly01/01/200609/09/20251
EP-A  EP FOR WELL #3NITRITE  3 Years01/01/202009/09/20251
EP-A  EP FOR WELL #3RAD - GROSS ALPHA  9 Years01/01/202309/09/20251
EP-A  EP FOR WELL #3RAD - GROSS ALPHA  Quarterly04/01/202109/30/20211
EP-A  EP FOR WELL #3RAD - RADIUM 226/228  9 Years01/01/202309/09/20251
EP-A  EP FOR WELL #3RAD - RADIUM 226/228  Quarterly04/01/202109/30/20211
EP-A  EP FOR WELL #3RAD - URANIUM  9 Years01/01/202309/09/20251
EP-A  EP FOR WELL #3RAD - URANIUM  Quarterly04/01/202109/30/20211
EP-A  EP FOR WELL #3SOC  Yearly01/01/202109/09/20251
EP-A  EP FOR WELL #3VOLATILE ORGANICS  Yearly01/01/202109/09/20251
EP-B  EP FOR WELLS 4-6RAD - GROSS ALPHA  Quarterly01/01/202506/30/20251
EP-B  EP FOR WELLS 4-6RAD - URANIUM  Quarterly01/01/202506/30/20251

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