OHA Drinking Water Services
OR41
PWS ID: 95655 ---- BIGGS SERVICE DISTRICT

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  3 Years01/01/2028 - 12/31/2028   5 06/11/2025
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 277 1 incomplete07/31/2024
  Seasonal sampling period:   07/01   thru   07/30
EP-A  EP FOR WELL ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,008 1 incomplete10/15/2025
EP-A  EP FOR WELL IOC  3 Years 01/01/2026 - 12/31/2028 1,008 1 incomplete10/15/2025
EP-A  EP FOR WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 277 1 incomplete10/15/2025
EP-A  EP FOR WELL NITRITE  3 Years 01/01/2026 - 12/31/2028 1,008 1 incomplete10/15/2025
EP-A  EP FOR WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 93 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL SOC  Yearly 01/01/2026 - 12/31/2026 277 1 incomplete05/13/2025
EP-A  EP FOR WELL VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 277 1 incomplete10/15/2025

5  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 Months01/01/202406/30/20255
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Quarterly07/01/202406/09/20252IDSE

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