OHA Drinking Water Services
OR41
PWS ID: 00587 ---- ONTARIO, CITY OF

See also: Coliform Schedules  ::  LT2 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
CH-A1  CH FOR OLD PLANT TOC & ALKALINITY notesQuarterly01/01/2025 - 03/31/2025 16 1 done 01/22/2025
CH-A2  CH FOR WESTECH PLANT TOC & ALKALINITY notesQuarterly01/01/2025 - 03/31/2025 16 1 done 01/22/2025
DIST-A  Distribution System ASBESTOS, DIST notes9 Years01/01/2020 - 12/31/2028 1,387 1 done 01/23/2023
DIST-A  Distribution System LEAD & COPPER notes3 Years01/01/2027 - 12/31/2027   30 09/20/2024
 Seasonal sampling period:  06/01  thru  09/30
DIST-A  Distribution System STAGE 2 DBP notesQuarterly01/01/2025 - 03/31/2025 16 4 done 01/07/2025
EP-A  EP FOR RIVER, WELLS ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,387 1 incomplete07/16/2019
EP-A  EP FOR RIVER, WELLS IOC  9 Years 01/01/2020 - 12/31/2028 1,387 1 incomplete07/16/2019
EP-A  EP FOR RIVER, WELLS NITRATE  Yearly 01/01/2025 - 12/31/2025 291 1 incomplete07/01/2024
EP-A  EP FOR RIVER, WELLS NITRITE  9 Years 01/01/2020 - 12/31/2028 1,387 1 incomplete07/16/2019
EP-A  EP FOR RIVER, WELLS RAD - GROSS ALPHA  6 Years 01/01/2023 - 12/31/2028 1,387 1 incomplete07/06/2020
EP-A  EP FOR RIVER, WELLS RAD - RADIUM 226/228 9 Years 01/01/2020 - 12/31/2028 1,387 1 incomplete07/11/2018
EP-A  EP FOR RIVER, WELLS RAD - URANIUM  6 Years 01/01/2023 - 12/31/2028 1,387 1 incomplete07/06/2020
EP-A  EP FOR RIVER, WELLS SOC notes3 Years 01/01/2023 - 12/31/2025 291 2 incomplete08/30/2022
EP-A  EP FOR RIVER, WELLS VOLATILE ORGANICS  Yearly 01/01/2025 - 12/31/2025 291 1 incomplete07/01/2024
WTP-A1  TP FOR OLD PLANTTOTAL ORGANIC CARBON Quarterly01/01/2025 - 03/31/2025 16 1 done 01/22/2025
WTP-A2  TP FOR WESTECH PLANTTOTAL ORGANIC CARBON Quarterly01/01/2025 - 03/31/2025 16 1 done 01/22/2025

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More information for this water system: SDWIS ID 3898

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