OHA Drinking Water Services
PWS ID: 00998 ---- DEXTER OAKS CO-OP

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, SODIUM = Sodium*
*Non-alert (water quality notice)
Results:  15 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
CHEM9154 11/12/2020 11/30/2020 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.02960.0105 0.0111/30/2020
CHEM8693 11/14/2019 11/18/2019 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.03260.0105 0.0111/18/2019
CHEM9023 08/13/2020 08/21/2020 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.04990.0105 0.0108/21/2020
CHEM8444 08/08/2019 08/12/2019 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.03120.0105 0.0108/12/2019
COLI16809 06/08/2017 06/13/2017 DIST-A space #31 hb COLI COLIFORM, TOTAL (TCR) Present Present Present06/19/2017
CHEM8345 04/29/2019 05/30/2019 EP-A EP FOR WELLS 1 & 2 SODIUM* SODIUM 71.320 05/30/2019
CHEM8943 05/14/2020 05/19/2020 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.01860.0105 0.0105/19/2020
COLI14086 04/15/2015 04/17/2015 DIST-A #31 kitchen sink COLI COLIFORM, TOTAL (TCR) Present Present Present04/17/2015
COLI16587 02/28/2017 03/03/2017 DIST-A sink COLI COLIFORM, TOTAL (TCR) Present Present Present03/08/2017
CHEM8250 02/21/2019 02/26/2019 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.03180.0105 0.0102/26/2019
CHEM8854 02/17/2020 02/20/2020 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.01180.0105 0.0102/20/2020
CHEM8245 02/14/2019 02/19/2019 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.03670.0105 0.0102/20/2019
CHEM7474 12/02/2016 01/05/2017 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.40.0105 0.0101/09/2017
CHEM4344 08/02/2010 09/03/2010 EP-A EP FOR WELLS 1 & 2 SODIUM* SODIUM 59.220
CHEM755 04/05/2004 05/27/2004 EP-A EP FOR WELLS 1 & 2 CHEM ARSENIC 0.0330.0105 0.01
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
05/07/2001A--EP FOR WELLS 1 & 2Arsenic0.027 0.05
10/16/2000A--EP FOR WELLS 1 & 2Arsenic0.045 0.05
09/13/2000A--EP FOR WELLS 1 & 2Arsenic0.032 0.05
02/18/2000A--EP FOR WELLS 1 & 2Arsenic0.0263 0.05
01/04/2000A--EP FOR WELLS 1 & 2Arsenic0.0418 0.05
12/08/1999A--EP FOR WELLS 1 & 2Arsenic0.0432 0.05
04/27/1999AB--WELL #2Arsenic0.0511 0.05
01/21/2000Coliform
05/27/1997Coliform
05/23/1997Coliform
05/21/1997Coliform
08/29/1994Coliform
07/13/1994Coliform
05/07/2001A--EP FOR WELLS 1 & 2Sodium49
04/27/1999AB--WELL #2Sodium57
07/14/1996AA--WELL #1Sodium37.9
07/19/1991A--EP FOR WELLS 1 & 2Sodium34.6


For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3502
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