OHA Drinking Water Services
PWS ID: 00673 ---- PRAIRIE CITY

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, SOURCE = Coliform source sample*, LCR = Lead and copper 90th percentile, SODIUM = Sodium*
*Non-alert (water quality notice)
Results:  25 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
COLI20991 06/02/2021 06/04/2021 SRC-AC Well 2 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
CHEM7646 07/18/2017 08/02/2017 EP-A EP FOR INFILTRATION GALLERIES & WELLS CHEM TOLUENE 0.000550.0005 1
CHEM7638 07/05/2017 07/18/2017 EP-A EP FOR INFILTRATION GALLERIES & WELLS CHEM STYRENE 0.000630.0005 0.107/18/2017
CHEM6740 06/01/2015 06/16/2015 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL HALOACETIC ACIDS (HAA5) 0.06310.06 0.06
CHEM6740 06/01/2015 06/16/2015 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL TRIHALOMETHANES (TTHM) 0.080.08 0.08
CHEM6365 06/10/2014 07/17/2014 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL HALOACETIC ACIDS (HAA5) 0.09480.06 0.0607/18/2014
CHEM6365 06/10/2014 07/17/2014 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL TRIHALOMETHANES (TTHM) 0.09090.08 0.0807/18/2014
CHEM5872 06/18/2013 07/25/2013 LCR COPPER 90TH % VALUE 1.5161.35
CHEM4937 05/03/2011 07/08/2011 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL HALOACETIC ACIDS (HAA5) 0.06060.06 0.0607/08/2011
CHEM4432 07/27/2010 10/18/2010 LCR COPPER 90TH % VALUE 1.491.35
CHEM3728 09/09/2009 09/30/2009 LCR COPPER 90TH % VALUE 1.581.35 10/02/2009
CHEM3592 06/16/2009 07/14/2009 DIST-A DISTRIBUTION SYSTEM CHEM TOTAL HALOACETIC ACIDS (HAA5) 0.06890.06 0.06
CHEM2969 03/18/2008 05/28/2008 EP-B EP FOR WELL #1 (OLD) SODIUM* SODIUM 68.520
CHEM2635 09/18/2007 10/04/2007 LCR COPPER 90TH % VALUE 2.841.35
CHEM2570 10/17/2006 08/03/2007 LCR COPPER 90TH % VALUE 1.741.35
CHEM2318 10/25/2006 02/07/2007 EP-A EP FOR INFILTRATION GALLERIES & WELL #2 CHEM TOLUENE 0.01950.0005 1
CHEM2010 09/20/2005 05/26/2006 EP-A EP FOR INFILTRATION GALLERIES & WELL #2 CHEM DI(2-ETHYLHEXYL) - PHTHALATE 0.00130.0006 0.006
CHEM1776 09/27/2005 11/30/2005 LCR COPPER 90TH % VALUE 2.351.35
CHEM1584 11/11/1998 05/11/2005 LCR COPPER 90TH % VALUE 1.41.35
CHEM1279 09/18/2001 03/21/2005 LCR COPPER 90TH % VALUE 2.371.35
CHEM1279 08/25/1995 03/21/2005 LCR COPPER 90TH % VALUE 1.9031.35
CHEM1279 09/09/1997 03/21/2005 LCR COPPER 90TH % VALUE 1.41.35
CHEM1279 09/14/1999 03/21/2005 LCR COPPER 90TH % VALUE 1.421.35
CHEM1017 10/05/2004 12/01/2004 LCR COPPER 90TH % VALUE 2.751.35
CHEM371 04/08/2003 04/18/2003 LCR COPPER 90TH % VALUE 1.581.35
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
07/27/1999B--EP FOR WELL #1 (OLD)Sodium65.1
09/24/1996B--EP FOR WELL #1 (OLD)Sodium71
06/30/1993A--EP FOR INFILTRATION GALLERIES & WELL #2Sodium58.9



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: 3779