OHA Drinking Water Services
PWS ID: 93718 ---- NINETY-ONE ELEM SD 91

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, SODIUM = Sodium*
*Non-alert (water quality notice)
Results:  13 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
CHEM7700 09/14/2017 09/20/2017 EP-A EP FOR WELLS CHEM ARSENIC 0.01770.0105 0.01
CHEM6380 06/26/2014 07/25/2014 EP-A EP FOR WELLS SODIUM* SODIUM 55.420
CHEM5228 01/06/2012 01/18/2012 EP-A EP FOR WELL #2 CHEM ARSENIC 0.01060.0105 0.0101/19/2012
CHEM5130 10/27/2011 11/08/2011 EP-A EP FOR WELL #2 CHEM ARSENIC 0.01240.0105 0.0111/09/2011
CHEM4970 07/14/2011 07/22/2011 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0170.0105 0.0107/25/2011
CHEM4801 03/17/2011 03/23/2011 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0170.0105 0.0103/24/2011
CHEM4563 10/14/2010 11/17/2010 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0160.0105 0.0111/18/2010
CHEM3924 01/14/2010 01/28/2010 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0170.0105 0.0101/28/2010
CHEM3890 12/16/2009 01/08/2010 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0160.0105 0.0101/11/2010
CHEM2059 12/22/2005 06/20/2006 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0150.0105 0.01
CHEM2059 12/22/2005 06/20/2006 EP-A EP FOR WELL #2 SODIUM* SODIUM 4920
CHEM172 03/01/2002 10/14/2002 EP-A EP FOR WELL #2 CHEM ARSENIC 0.0170.0105 0.01
CHEM172 03/01/2002 10/14/2002 EP-A EP FOR WELL #2 SODIUM* SODIUM 4620
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
03/05/1999Coliform
06/28/1995Coliform
06/19/1995Coliform
03/27/1995Coliform
11/14/1994Coliform
06/04/1999A--EP FOR WELL #2Sodium63



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: 1422