OHA Drinking Water Services
OR41
PWS ID: 95535 ---- MONROVIA MAIN OFFICE

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 Years01/01/2027 - 12/31/2027   5 09/05/2024
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELL #12P-DICHLOROBENZENE  Quarterly04/01/2026 - 06/30/2026 59 1 incomplete 03/30/2026
EP-A  EP FOR WELL #12 ARSENIC  3 Years 01/01/2026 - 12/31/2028 974 1 incomplete07/09/2025
EP-A  EP FOR WELL #12 IOC  9 Years 01/01/2023 - 12/31/2031 2,069 1 incomplete12/27/2022
EP-A  EP FOR WELL #12 NITRATE  Yearly01/01/2026 - 12/31/2026 243 1 done 03/30/2026
EP-A  EP FOR WELL #12 NITRITE  9 Years 01/01/2023 - 12/31/2031 2,069 1 incomplete12/27/2022
EP-A  EP FOR WELL #12 PFAS notes6 Months 01/01/2026 - 06/30/2026 59 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL #12 SOC  3 Years 01/01/2026 - 12/31/2028 974 1 incomplete07/09/2025
EP-A  EP FOR WELL #12 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 974 1 incomplete10/15/2025

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