OHA Drinking Water Services
OR41
PWS ID: 90575 ---- HARPER HIGH/ELEMENTARY SD 66

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 09/24/2025
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notes3 Years01/01/2026 - 12/31/2026   1incomplete09/20/2023
 Seasonal sampling period:  09/01  thru  09/30
EP-A  EP FOR WELL ARSENIC  Yearly 01/01/2026 - 12/31/2026 330 1 incomplete08/13/2025
EP-A  EP FOR WELL IOC  9 Years 01/01/2026 - 12/31/2034 3,252 1 incomplete06/15/2016
EP-A  EP FOR WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 330 1 incomplete04/16/2025
EP-A  EP FOR WELL NITRITE  9 Years 01/01/2026 - 12/31/2034 3,252 1 incomplete10/22/2025
EP-A  EP FOR WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,061 1 incomplete06/01/2022
EP-A  EP FOR WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,061 1 incomplete06/01/2022

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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  3 Years01/01/200912/31/20131Sample between June 1 and Sept. 30. Monioring reduction granted.
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Yearly01/01/200812/31/20081Sample between June 1 and Sept. 30.
EP-A  EP FOR WELLARSENIC  3 Years01/01/200206/30/20221Arsenic treatment unit is maintained in August each year prior to school opening. GB 1/21/2010
EP-A  EP FOR WELLARSENIC  Monthly08/01/202207/31/20251Monthly arsenic monitoring to track treatment effectiveness.
EP-A  EP FOR WELLARSENIC  Quarterly07/01/202207/31/20221
EP-A  EP FOR WELLIOC  3 Years01/01/200212/31/20071
EP-A  EP FOR WELLNITRITE  3 Years01/01/200212/31/20071

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More information for this water system: SDWIS ID 2540
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