OHA Drinking Water Services
OR41
PWS ID: 00368 ---- HELIX, CITY OF

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 08/10/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notes3 Years01/01/2026 - 12/31/2026   1incomplete07/18/2023
  Seasonal sampling period:   07/01   thru   07/31
EP-A  EP FOR WELL #4 ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,103 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 IOC notes9 Years 01/01/2020 - 12/31/2028 1,008 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 NITRATE  Yearly 01/01/2026 - 12/31/2026 277 1 incomplete08/05/2025
EP-A  EP FOR WELL #4 NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,008 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 PFAS notes6 Months 01/01/2026 - 06/30/2026 93 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL #4 RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,199 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 RAD - RADIUM 226/228 9 Years 01/01/2023 - 12/31/2031 2,103 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,199 1 incomplete10/23/2019
EP-A  EP FOR WELL #4 SOC  3 Years 01/01/2026 - 12/31/2028 1,008 1 incomplete08/13/2025
EP-A  EP FOR WELL #4 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,008 1 incomplete08/05/2025

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