OHA Drinking Water Services

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, LCR = Lead and copper 90th percentile
Results:  10 alerts found for this water system.Show response time
Water Quality Alerts
Alert ID Sample
Source Name Alert
Contaminant Result Alert
MCL Contact
COLI21363 09/08/2021 09/09/2021 DIST-A 19627 Aspen hb COLI COLIFORM, TOTAL (TCR) Present Present Present09/09/2021
COLI20155 08/12/2020 08/13/2020 DIST-A 13410 Diamond Lake Hose bib COLI COLIFORM, TOTAL (TCR) Present Present Present08/13/2020
CHEM8697 10/09/2019 11/20/2019 EP-A EP FOR WELL CHEM TETRACHLOROETHYLENE 0.00060.0005 0.00511/20/2019
COLI17991 07/18/2018 07/19/2018 DIST-A 13410 Diamond Lk Ct HB COLI COLIFORM, TOTAL (TCR) Present Present Present07/19/2018
COLI9984 12/06/2011 12/08/2011 DIST-A 13410 Diamond Lk hb COLI COLIFORM, TOTAL (TCR) Present Present Present12/08/2011
CHEM5014 08/04/2011 08/31/2011 EP-A EP FOR MAIN WELL CHEM NITRATE (AS N) 55 1009/01/2011
CHEM4498 08/31/2010 10/28/2010 EP-A EP FOR MAIN WELL CHEM NITRATE+NITRITE (AS N) 5.65 10
CHEM4488 08/31/2010 10/27/2010 EP-A EP FOR MAIN WELL CHEM NITRATE (AS N) 5.65 1010/27/2010
09/02/2008 10/02/2009 EP-A EP FOR MAIN WELL CHEM NITRATE (AS N) 55 10
CHEM1351 03/11/1998 03/21/2005 LCR LEAD 90TH % VALUE 0.0160.0155

Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
05/31/1991A--EP FOR MAIN WELL (WELL #1)1,1,1-Trichloroethane0.1169 0.2
05/31/1991B--EP FOR EMERGENCY WELL (WELL #2)1,1,1-Trichloroethane0.0286 0.2
02/06/1991A--EP FOR MAIN WELL (WELL #1)1,1,1-Trichloroethane0.02 0.2
02/06/1991B--EP FOR EMERGENCY WELL (WELL #2)1,1,1-Trichloroethane0.06 0.2
05/31/1991A--EP FOR MAIN WELL (WELL #1)1,1-Dichloroethylene0.0352 0.007
05/31/1991B--EP FOR EMERGENCY WELL (WELL #2)1,1-Dichloroethylene0.0059 0.007
02/06/1991A--EP FOR MAIN WELL (WELL #1)1,1-Dichloroethylene0.0054 0.007
02/06/1991B--EP FOR EMERGENCY WELL (WELL #2)1,1-Dichloroethylene0.015 0.007
09/04/2001A--EP FOR MAIN WELL (WELL #1)Nitrate5.6 10
06/12/2001A--EP FOR MAIN WELL (WELL #1)Nitrate6.6 10
12/05/2000A--EP FOR MAIN WELL (WELL #1)Nitrate5 10
09/07/2000A--EP FOR MAIN WELL (WELL #1)Nitrate5.7 10
02/24/2000A--EP FOR MAIN WELL (WELL #1)Nitrate5.2 10
11/23/1999A--EP FOR MAIN WELL (WELL #1)Nitrate5.1 10
09/30/1999A--EP FOR MAIN WELL (WELL #1)Nitrate5.4 10

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 :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3541