OHA Drinking Water Services
OR41
PWS ID: 93711 ---- CORVALLIS WALDORF ASSOCIATION

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 Months01/01/2026 - 06/30/2026 87 10 done 02/20/2026
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notes3 Years01/01/2027 - 12/31/2027   1 07/22/2024
  Seasonal sampling period:   07/01   thru   07/31
EP-A  EP for WELLATRAZINE  Yearly01/01/2026 - 12/31/2026 271 1 incomplete 09/08/2025
EP-A  EP for WELL ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete06/08/2015
EP-A  EP for WELL IOC notes9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete06/08/2015
EP-A  EP for WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 271 1 incomplete09/08/2025
EP-A  EP for WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,002 1 incomplete06/08/2015
EP-A  EP for WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 87 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP for WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,002 1 incomplete09/08/2025
EP-A  EP for WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,002 1 incomplete09/08/2025

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