OHA Drinking Water Services
OR41
PWS ID: 00860 ---- TERREBONNE DOMESTIC 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 08/14/2025
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELLS #1, #3 & #4 ARSENIC  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete11/19/2025
EP-A  EP FOR WELLS #1, #3 & #4 IOC notes9 Years01/01/2020 - 12/31/2028 970 1 done 11/02/2022
EP-A  EP FOR WELLS #1, #3 & #4 NITRATE notesYearly 01/01/2026 - 12/31/2026 239 1 incomplete11/19/2025
EP-A  EP FOR WELLS #1, #3 & #4 NITRITE notes9 Years01/01/2020 - 12/31/2028 970 1 done 11/02/2022
EP-A  EP FOR WELLS #1, #3 & #4 PFAS notes6 Months 01/01/2026 - 06/30/2026 55 1 incomplete10/23/2025
  Initial monitoring - 2 samples only
EP-A  EP FOR WELLS #1, #3 & #4 RAD - GROSS ALPHA  9 Years 01/01/2020 - 12/31/2028 970 1 incomplete10/11/2017
EP-A  EP FOR WELLS #1, #3 & #4 RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,161 1 incomplete11/02/2022
EP-A  EP FOR WELLS #1, #3 & #4 RAD - URANIUM  6 Years 01/01/2026 - 12/31/2031 2,065 1 incomplete11/02/2022
EP-A  EP FOR WELLS #1, #3 & #4 SOC  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete11/19/2025
EP-A  EP FOR WELLS #1, #3 & #4 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete11/19/2025

5  secs
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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
EP-A  EP FOR WELLS #1, #3 & #4NITRATE  Quarterly01/01/200212/31/20021
EP-A  EP FOR WELLS #1, #3 & #4RAD - GROSS ALPHA  6 Years01/01/200812/31/20171

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