OHA Drinking Water Services
PWS ID: 00517 ---- COBBLESTONE MHP

Alerts indicate water quality tests with analytical results greater than the detection limit or one-half of the maximum allowable contaminant level which may require some follow-up actions by Drinking Water Services. See the Contacts link for reports on follow-up actions. Alerts are not water quality violations. Violations for this water system can be found here.

Alert Type Abbreviations:  CHEM = Chemical, COLI = Coliform, SOURCE = Coliform source sample*, LCR = Lead and copper 90th percentile, SODIUM = Sodium*
*Non-alert (water quality notice)
Results:  44 alerts found for this water system.Show response time
Water Quality Alerts
Alert ID Sample
Date		 Alert
Date		 Source
ID		 Source Name Alert
Type		 Contaminant Result Alert
Level		 MCL Contact
Report
COLI20904 04/01/2021 04/02/2021 DIST-A Tank #6 COLI COLIFORM, TOTAL (TCR) Present Present Present04/02/2021
COLI20604 12/01/2020 12/02/2020 DIST-A Shop COLI COLIFORM, TOTAL (TCR) Present Present Present12/03/2020
COLI20009 07/02/2020 07/06/2020 DIST-A Sp #6 COLI COLIFORM, TOTAL (TCR) Present Present Present07/06/2020
COLI19999 07/01/2020 07/02/2020 DIST-A Sp #1 COLI COLIFORM, TOTAL (TCR) Present Present Present07/06/2020
CHEM8383 09/04/2018 06/28/2019 EP-A EP FOR WELL #3 CHEM FLUORIDE 3.942.39 406/28/2019
CHEM8363 06/05/2019 06/26/2019 EP-A EP FOR WELL #3 CHEM FLUORIDE 2.882.39 406/26/2019
CHEM8269 02/25/2019 03/20/2019 EP-A EP FOR WELL #3 CHEM FLUORIDE 4.972.39 403/20/2019
CHEM8269 02/25/2019 03/20/2019 EP-A EP FOR WELL #3 SODIUM* SODIUM 20920 03/20/2019
COLI18684 02/25/2019 02/26/2019 SRC-AC Well #3 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI18595 01/02/2019 01/07/2019 DIST-A 4425 W Main SR10 COLI COLIFORM, TOTAL (TCR) Present Present Present01/07/2019
COLI17423 11/08/2017 11/13/2017 SRC-AC 4425 W Main Wellhead SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI17392 11/01/2017 11/03/2017 DIST-A Space 9 COLI COLIFORM, TOTAL (TCR) Present Present Present11/03/2017
COLI12768 04/15/2014 04/23/2014 SRC-AC well #3 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI12739 04/04/2014 04/07/2014 DIST-A sp 4 outside COLI COLIFORM, TOTAL (TCR) Present Present Present04/07/2014
COLI12739 04/04/2014 04/07/2014 SRC-AA well #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present04/07/2014
COLI12733 04/02/2014 04/04/2014 DIST-A os faucet sp 34 COLI COLIFORM, TOTAL (TCR) Present Present Present04/07/2014
COLI11314 12/13/2012 12/17/2012 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI8967 02/07/2011 02/09/2011 SRC-AB well #2 jack 35462 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
CHEM4584 11/16/2010 12/03/2010 EP-A EP FOR WELLFIELD (WELLS #1 & 2) CHEM FLUORIDE 3.222.39 4
CHEM4584 11/16/2010 12/03/2010 EP-A EP FOR WELLFIELD (WELLS #1 & 2) SODIUM* SODIUM 12920
COLI8388 10/04/2010 10/06/2010 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI8189 09/07/2010 09/09/2010 SRC-AA well 1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI8037 08/09/2010 08/11/2010 SRC-AA well head #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7901 07/07/2010 07/15/2010 SRC-AA well #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7901 07/09/2010 07/15/2010 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7901 07/09/2010 07/15/2010 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7901 07/09/2010 07/15/2010 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7901 07/09/2010 07/15/2010 SRC-BA well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7887 07/07/2010 07/13/2010 SRC-AB well #2 COLI COLIFORM, E. COLI Present Present Present07/13/2010
COLI7887 07/07/2010 07/13/2010 SRC-AB well #2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present07/13/2010
COLI7862 07/07/2010 07/09/2010 DIST-A 4425 w main st #32 COLI COLIFORM, E. COLI Present Present Present07/12/2010
COLI7862 07/07/2010 07/09/2010 DIST-A 4425 w main st #32 COLI COLIFORM, TOTAL (TCR) Present Present Present07/12/2010
COLI7709 06/03/2010 06/10/2010 SRC-AA Well Head 1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present06/15/2010
COLI7603 05/04/2010 05/10/2010 SRC-AA Well Head 1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present05/12/2010
COLI7603 05/04/2010 05/10/2010 SRC-AB Well Head 2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present05/12/2010
COLI7539 04/14/2010 04/19/2010 SRC-AA source well #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present04/23/2010
COLI7449 03/16/2010 03/22/2010 SRC-AA well head SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI7356 02/08/2010 02/12/2010 SRC-AA well #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present02/12/2010
CHEM3764 09/29/2009 10/14/2009 LCR LEAD 90TH % VALUE 0.016550.0155 10/14/2009
CHEM3731 06/18/2009 10/02/2009 EP-A EP FOR WELLFIELD (WELLS #1 & 2) CHEM GROSS ALPHA, EXCLUDING RA & U 10.615 1510/08/2009
CHEM3484 12/24/2008 04/22/2009 EP-A EP FOR WELLFIELD (WELLS #1 & 2) CHEM GROSS ALPHA, EXCLUDING RA & U 915 1504/24/2009
COLI1973 05/02/2005 05/05/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
CHEM1237 11/15/1994 03/21/2005 LCR LEAD 90TH % VALUE 0.0180.0155
CHEM1237 06/30/2000 03/21/2005 LCR LEAD 90TH % VALUE 0.03580.0155
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
07/03/2001Coliform
12/16/1997Coliform
08/15/1996Coliform
07/18/1994Coliform
10/17/2001A--WELLFIELD (WELLS #1 & 2)Fluoride2.67 4
09/02/1998A--WELLFIELD (WELLS #1 & 2)Fluoride2.5 4
10/17/2001A--WELLFIELD (WELLS #1 & 2)Sodium171
09/02/1998A--WELLFIELD (WELLS #1 & 2)Sodium120
10/17/1995A--WELLFIELD (WELLS #1 & 2)Sodium99
05/15/1991A--WELLFIELD (WELLS #1 & 2)Sodium84.42


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