01154 Coliform Schedules | Data Online | Oregon Drinking Water Services

Current Open Coliform Sample Schedule

(subject to change based upon future test results)
GWR:  SRC-AB:  1 Assessment sample(s) per Year to be taken beginning 01/01/2015 -
DIST-A:  1 Routine sample(s) per Month to be taken beginning 06/01/2014 -
GWR:  SRC-AA:  1 Assessment sample(s) per Year to be taken beginning 01/01/2013 -

(A begin date of 01/01/1991 indicates the year the Total Coliform Rule was established)

Public water systems that use chlorine or chloramines must measure the residual disinfectant level at the same points in the distribution system and at the same time when total coliforms are sampled.

Repeat, Temporary Routine, and Prior Coliform Sample Schedules

(Schedules in bold reflect current schedules)

GWR:  2 Triggered sample(s) to be taken and reported 05/10/2024 - 05/21/2024
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/11/2024 - 05/21/2024 at DIST-A

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GWR:  2 Triggered sample(s) to be taken and reported 11/13/2023 - 11/24/2023
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 11/14/2023 - 11/24/2023 at DIST-A

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GWR:  2 Triggered sample(s) to be taken and reported 09/18/2023 - 09/29/2023
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 09/19/2023 - 09/29/2023 at DIST-A

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GWR:  2 Triggered sample(s) to be taken and reported 07/21/2023 - 08/01/2023
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/22/2023 - 08/01/2023 at DIST-A

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GWR:  2 Triggered sample(s) to be taken and reported 11/17/2022 - 11/28/2022
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 11/18/2022 - 11/28/2022 at DIST-A

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TCR: 5 Temporary Routine sample(s) per Month to be taken 05/01/2014 - 05/31/2014 at DIST-A

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GWR:  2 Triggered sample(s) to be taken and reported 04/30/2014 - 05/15/2014
       1 at SRC-AA - WELL #1
       1 at SRC-AB - WELL #2 - LOWER

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TCR: 4 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/01/2014 - 05/15/2014 at DIST-A

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TCR: 1 Routine sample(s) per Month to be taken 10/01/2010 - 04/30/2014 at DIST-A

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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 01/31/2014 at SRC-AB WELL #2 - LOWER

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GWR: 1 Assessment sample(s) per Month to be taken 01/01/2010 - 12/31/2010 at SRC-AA WELL #1

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TCR: 5 Temporary Routine sample(s) per Month to be taken 09/01/2010 - 09/30/2010 at DIST-A

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TCR: 4 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 08/28/2010 - 09/11/2010 at DIST-A

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GWR: 1 Triggered sample(s) to be taken and reported 08/27/2010 - 09/10/2010 at SRC-AA WELL #1

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GWR: 1 Triggered sample(s) to be taken and reported 08/27/2010 - 09/10/2010 at SRC-AB WELL #2 - LOWER

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TCR: 5 Temporary Routine sample(s) per Month to be taken 08/01/2010 - 08/31/2010 at DIST-A

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TCR: 4 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/24/2010 - 08/07/2010 at DIST-A

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GWR: 1 Triggered sample(s) to be taken and reported 07/23/2010 - 08/06/2010 at SRC-AB WELL #2 - LOWER

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GWR: 1 Triggered sample(s) to be taken and reported 07/23/2010 - 08/06/2010 at SRC-AA WELL #1

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TCR: 1 Routine sample(s) per Month to be taken 10/01/2007 - 07/31/2010 at DIST-A

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TCR: 5 Temporary Routine sample(s) per Month to be taken 09/01/2007 - 09/30/2007 at DIST-A

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