CORNELIUS, CITY OF
PWS #: 00218     ----     System Status:Active    System Type: C    Population: 13,201

Current Open Coliform Sample Schedule
(subject to change based upon future test results)
DIST-A:  15 Routine sample(s)  per Month to be taken beginning 04/01/2022 -
GWR:  SRC-BA:  1 Assessment sample(s)  per Year to be taken beginning 01/01/2020 -
 
(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   01/18/2023 - 01/28/2023  at DIST-A  
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TCR:  10 Routine sample(s) per Month to be taken   09/01/2004 - 03/31/2022  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   09/18/2019 - 09/28/2019  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   09/11/2019 - 09/21/2019  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   08/14/2019 - 08/24/2019  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   04/19/2017 - 04/29/2017  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   09/11/2013 - 09/25/2013  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   02/16/2011 - 03/02/2011  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   06/24/2009 - 07/08/2009  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   05/27/2009 - 06/10/2009  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   08/15/2007 - 08/29/2007  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   11/01/2006 - 11/15/2006  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   09/27/2006 - 10/11/2006  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   11/02/2005 - 11/16/2005  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   10/26/2005 - 11/09/2005  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   11/03/2004 - 11/17/2004  at DIST-A  
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TCR:  9 Routine sample(s) per Month to be taken   01/01/1991 - 08/31/2004  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   05/26/2004 - 06/09/2004  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   11/26/2003 - 12/10/2003  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   06/19/2002 - 07/02/2002  at DIST-A  
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TCR:  3 Repeat sample(s) within 24 hours of a TC+ Routine Sample to be reported   11/21/2001 - 12/19/2001  at DIST-A  
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Hide schedules prior to 2020

Instructions and Notes
1) If no prior sample schedules appear, then no prior schedules exist within the database.
 
2) 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.
 
3) 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:  Nicole Alfafara, (503) 278-1531.


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