OHA Drinking Water Services
OR41
PWS ID: 06118 ---- COLUMBIA HILLS HOA

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 Months 01/01/2026 - 06/30/2026 154 5 incomplete09/15/2025
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 338 1 incomplete09/16/2025
 Seasonal sampling period:  09/01  thru  09/30
EP-A  EP FOR WELLS ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,069 1 incomplete07/21/2025
EP-A  EP FOR WELLS IOC  3 Years 01/01/2026 - 12/31/2028 1,069 1 incomplete07/21/2025
EP-A  EP FOR WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 338 1 incomplete07/21/2025
EP-A  EP FOR WELLS NITRITE  3 Years 01/01/2026 - 12/31/2028 1,069 1 incomplete07/21/2025
EP-A  EP FOR WELLS RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,260 1 incomplete07/28/2024
EP-A  EP FOR WELLS RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,260 1 incomplete07/28/2024
EP-A  EP FOR WELLS RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,260 1 incomplete07/28/2024
EP-A  EP FOR WELLS SOC  3 Years 01/01/2026 - 12/31/2028 1,069 1 incomplete07/21/2025
EP-A  EP FOR WELLS VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,069 1 incomplete07/21/2025

5  secs
Show Expired



More information for this water system: SDWIS ID 4836

Information for all water systems:

Main menu:
Need help? Email Drinking Water Services for assistance.Staff/Partner Login