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 Months07/01/2025 - 12/31/2025 43 10 done 08/26/2025
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  Yearly01/01/2025 - 12/31/2025 43 1 incomplete 07/22/2024
EP-A  EP for WELL ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,139 1 incomplete06/08/2015
EP-A  EP for WELL IOC notes9 Years 01/01/2020 - 12/31/2028 1,139 1 incomplete06/08/2015
EP-A  EP for WELL NITRATE  Yearly01/01/2025 - 12/31/2025 43 1 done 09/08/2025
EP-A  EP for WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,139 1 incomplete06/08/2015
EP-A  EP for WELL SOC  3 Years 01/01/2023 - 12/31/2025 43 1 incomplete05/09/2022
EP-A  EP for WELL VOLATILE ORGANICS  3 Years 01/01/2023 - 12/31/2025 43 1 incomplete05/09/2022

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More information for this water system: SDWIS ID 1417

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