Current Open Coliform Sample Schedule
(subject to change based upon future test results)
GWR: CH-B2: 1 Assessment sample(s) per Year to be taken beginning 01/01/2016 -
DIST-A: 70 Routine sample(s) per Month to be taken beginning 03/01/2014 -
GWR: CH-D: 1 Assessment sample(s) per Year to be taken beginning 01/01/2013 -
GWR: SRC-EA: 1 Assessment sample(s) per Year to be taken beginning 01/01/2013 -
GWR: CH-C: 1 Assessment sample(s) per Year to be taken beginning 01/01/2012 -
(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)
TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 08/16/2022 - 08/26/2022 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 08/15/2022 - 08/26/2022
1 at SRC-EA - SPORTS WAY WELL #1
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GWR: 5 Confirmation sample(s) to be taken and reported 08/03/2022 - 08/14/2022
5 at SRC-CB - WEYERHAUSER WELL #2
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GWR: 5 Confirmation sample(s) to be taken and reported 08/03/2022 - 08/14/2022
5 at SRC-CA - WEYERHAUSER WELL #1
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GWR: 5 Confirmation sample(s) to be taken and reported 08/03/2022 - 08/14/2022
5 at SRC-CC - WEYERHAUSER WELL #3
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/12/2022 - 07/22/2022 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 07/11/2022 - 07/22/2022
1 at SRC-EA - SPORTS WAY WELL #1
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/06/2022 - 07/16/2022 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 07/05/2022 - 07/16/2022
1 at CH-D - COMMON HEADER FOR WTP-D
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GWR: 1 Triggered sample(s) to be taken and reported 05/24/2021 - 06/04/2021
1 at CH-B2 - COMMON HEADER FOR WTP-B
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/25/2021 - 06/04/2021 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 06/02/2020 - 06/12/2020 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 06/01/2020 - 06/12/2020
1 at CH-B2 - COMMON HEADER FOR WTP-B
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/22/2019 - 06/01/2019 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 05/21/2019 - 06/01/2019
1 at SRC-EA - SPORTS WAY WELL #1
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GWR: 4 Triggered sample(s) to be taken and reported 08/03/2016 - 08/14/2016
1 at SRC-EA - SPORTS WAY WELL #1
1 at CH-B2 - COMMON HEADER FOR WTP-B
1 at CH-C - COMMON HEADER FOR WTP-C
1 at CH-D - COMMON HEADER FOR WTP-D
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/17/2016 - 05/27/2016 at DIST-A
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BA THURSTON WELL #1
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BC THURSTON WELL #3
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BD THURSTON WELL #4
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BE PLATT WELL #1
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BF PLATT WELL #2
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BG THURSTON WELL #5
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BH THURSTON WELL #6
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GWR: 1 Assessment sample(s) Year 01/01/2015 - 12/31/2015 at SRC-BI THURSTON WELL #7
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GWR: 1 Assessment sample(s) Year 01/01/2013 - 12/31/2014 at CH-B2 COMMON HEADER FOR WTP-B
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TCR: 60 Routine sample(s) per Month to be taken 01/01/1991 - 02/28/2014 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 04/02/2013 - 04/14/2013
1 at SRC-EA - SPORTS WAY WELL #1
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 04/03/2013 - 04/14/2013 at DIST-A
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 06/30/2012 at SRC-BH THURSTON WELL #6
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 06/30/2012 at SRC-DA SP WELL #1
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 06/30/2012 at SRC-DB MAIA WELL #2
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 05/31/2012 at SRC-BD THURSTON WELL #4
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 05/31/2012 at SRC-BG THURSTON WELL #5
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 05/31/2012 at SRC-BI THURSTON WELL #7
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 05/31/2012 at SRC-BA THURSTON WELL #1
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 05/31/2012 at SRC-BC THURSTON WELL #3
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GWR: 5 Confirmation sample(s) to be taken and reported 02/29/2012 - 03/15/2012
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GWR: 5 Confirmation sample(s) to be taken and reported 01/26/2012 - 02/10/2012
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 10/18/2011 - 11/01/2011 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BI THURSTON WELL #7
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BH THURSTON WELL #6
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BG THURSTON WELL #5
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BA THURSTON WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BC THURSTON WELL #3
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BD THURSTON WELL #4
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BE PLATT WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-BF PLATT WELL #2
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-DA SP WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-DB MAIA WELL #2
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GWR: 1 Triggered sample(s) to be taken and reported 10/17/2011 - 11/01/2011 at SRC-EA SPORTS WAY WELL #1
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 10/31/2011 at SRC-CA WEYERHAUSER WELL #1
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 10/31/2011 at SRC-CB WEYERHAUSER WELL #2
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GWR: 1 Assessment sample(s) per Month to be taken 05/01/2011 - 10/31/2011 at SRC-CC WEYERHAUSER WELL #3
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 03/01/2011 - 03/15/2011 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/27/2010 - 08/10/2010 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 07/13/2010 - 07/27/2010 at DIST-A
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BI THURSTON WELL #7
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BH THURSTON WELL #6
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BG THURSTON WELL #5
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BA THURSTON WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BC THURSTON WELL #3
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BD THURSTON WELL #4
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BE PLATT WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-BF PLATT WELL #2
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-CA WEYERHAUSER WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-CB WEYERHAUSER WELL #2
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-CC WEYERHAUSER WELL #3
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-DA SP WELL #1
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-DB MAIA WELL #2
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GWR: 1 Triggered sample(s) to be taken and reported 07/12/2010 - 07/26/2010 at SRC-EA SPORTS WAY WELL #1
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 10/20/2009 - 11/03/2009 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 10/09/2007 - 10/23/2007 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 05/06/2005 - 05/20/2005 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 11/20/2001 - 12/19/2001 at DIST-A
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TCR: 3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported 10/05/2001 - 11/23/2001 at DIST-A
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Hide schedules prior to 2021
Instructions and Notes
- If no prior sample schedules appear, then no prior schedules exist within the database.
- Schedules for Oregon very small systems might not appear. If the system is active, samples must be collected for the presence of coliform bacteria once per month or once per quarter depending on water type, seasonal operating cycle, or previous sampling results.
- If a sample tests positive for total coliform or E. coli, a minimum of 3 repeat samples must be collected. At water systems where quarterly monitoring takes place, 3 routine samples must be collected the month following one in which a routine sample tested positive for the presence of total coliform or E. coli.
Any time a sample tests positive for the presence of coliform bacteria, the system's operator should contact their regulator. For this water system, that is:
DRINKING WATER SERVICES
Jay MacPherson
(541) 726-2587 ext 57
