OHA Drinking Water Services
OR41
PWS ID: 01096 ---- LAIDLAW WATER DISTRICT

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   10 02/20/2023
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 270 1 incomplete09/15/2025
  Seasonal sampling period:   09/01   thru   09/30
EP-A  EP FOR SCHOOL WELL ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,096 1 incomplete07/30/2019
EP-A  EP FOR SCHOOL WELL IOC notes9 Years 01/01/2020 - 12/31/2028 1,001 1 incomplete07/30/2019
EP-A  EP FOR SCHOOL WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 270 1 incomplete08/27/2025
EP-A  EP FOR SCHOOL WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,001 1 incomplete07/30/2019
EP-A  EP FOR SCHOOL WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 86 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR SCHOOL WELL RAD - GROSS ALPHA  6 Years 01/01/2023 - 12/31/2028 1,001 1 incomplete09/29/2022
EP-A  EP FOR SCHOOL WELL RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,192 1 incomplete09/29/2022
EP-A  EP FOR SCHOOL WELL RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,192 1 incomplete09/29/2022
EP-A  EP FOR SCHOOL WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-A  EP FOR SCHOOL WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL IOC  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 270 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL NITRITE  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 86 1 incomplete
  Initial monitoring - 2 samples only
EP-C  EP FOR HILLSIDE WELL RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,192 1 incomplete05/31/2023
EP-C  EP FOR HILLSIDE WELL RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,192 1 incomplete05/31/2023
EP-C  EP FOR HILLSIDE WELL RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,192 1 incomplete05/31/2023
EP-C  EP FOR HILLSIDE WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025
EP-C  EP FOR HILLSIDE WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,001 1 incomplete08/27/2025

6  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/200206/30/20185Sample Between June 1st and Sept 30th
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  3 Years01/01/202012/31/202110Sample between June 1 and Sept 30
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/202209/30/202320
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months07/01/201812/31/201920
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 IDSE  Quarterly10/01/201809/30/20192Collect dual sample sets at both SS #1 and SS #3 every calendar quarter. Third quarter 2019 sample should be collected in September.
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 IDSE  Yearly01/01/201812/31/20182Collect two dual sample sets in September at both SS #1 and SS #3.
EP-A  EP FOR SCHOOL WELLARSENIC  3 Years01/01/200212/31/20131
EP-A  EP FOR SCHOOL WELLRAD - GROSS ALPHA  9 Years01/01/200812/31/20161
EP-B  EP FOR RUESSE WELLNITRATE  Yearly01/01/201601/09/20181Nitrate schedule only. EP-A is the designated wellfield sampling location.
EP-C  EP FOR HILLSIDE WELLRAD - GROSS ALPHA  Quarterly07/01/202209/30/20231
EP-C  EP FOR HILLSIDE WELLRAD - RADIUM 226/228  Quarterly07/01/202209/30/20231
EP-C  EP FOR HILLSIDE WELLRAD - URANIUM  Quarterly07/01/202209/30/20231
EP-C  EP FOR HILLSIDE WELLSOC  Yearly01/01/202212/31/20251
EP-C  EP FOR HILLSIDE WELLVOLATILE ORGANICS  Yearly01/01/202212/31/20251

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