OHA Drinking Water Services
OR41
PWS ID: 01565 ---- WINCHESTER RIDGE

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 notes3 Years01/01/2028 - 12/31/2028   5 11/17/2025
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELLS ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,006 1 incomplete11/01/2024
EP-A  EP FOR WELLS IOC  3 Years 01/01/2026 - 12/31/2028 1,006 1 incomplete11/01/2024
EP-A  EP FOR WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 275 1 incomplete01/08/2025
EP-A  EP FOR WELLS NITRITE  3 Years 01/01/2026 - 12/31/2028 1,006 1 incomplete11/01/2024
EP-A  EP FOR WELLS PFAS notes6 Months 01/01/2026 - 06/30/2026 91 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELLS RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,197 1 incomplete07/02/2025
EP-A  EP FOR WELLS RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,197 1 incomplete07/02/2025
EP-A  EP FOR WELLS RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,197 1 incomplete07/02/2025
EP-A  EP FOR WELLS SOC  Yearly 01/01/2026 - 12/31/2026 275 1 incomplete11/21/2025
EP-A  EP FOR WELLS VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 275 1 incomplete11/21/2025

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 Months07/01/202412/31/20255
EP-A  EP FOR WELLSRAD - GROSS ALPHA  Quarterly07/01/202412/31/20251
EP-A  EP FOR WELLSRAD - RADIUM 226/228  Quarterly07/01/202412/31/20251
EP-A  EP FOR WELLSRAD - URANIUM  Quarterly07/01/202412/31/20251

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