OHA Drinking Water Services
OR41
PWS ID: 00493 ---- LYONS MEHAMA WATER DISTRICT
LRAAs and OELs

LRAA = Locational running annual average; OEL = Operational evaluation level. Learn about OELs here.
Averages are subject to change as new data is taken into consideration.

TTHM MCL = 0.080 mg/L,  HAA5 MCL = 0.060 mg/L.  MCL exceedances are indicated with red text.

Monitoring
Period		 Last
Sample		 Sample
Point		 Location TTHM
LRAA		 TTHM
OEL		 HAA5
LRAA		 HAA5
OEL
4Q2015 Nov 10, 2015 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.012 0.007 0.006
3Q2015 Sep 09, 2015 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.013 0.008 0.008
2Q2015 May 13, 2015 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.009 0.009 0.009
1Q2015 Mar 12, 2015 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.010 0.009 0.009
4Q2014 Nov 07, 2014 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.012 0.011 0.010
3Q2014 Sep 09, 2014 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.011 0.012 0.009 0.011
2Q2014 Jun 17, 2014 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.007 0.010 0.006
1Q2014 Mar 11, 2014 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.004 0.004
4Q2013 Dec 05, 2013 2DBP-01 NORTH RESERVOIR WHEN WTP OFF 0.002 0.001



More information for this water system: SDWIS ID 3967
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
New! Visit our new Drinking Water Source Protection page.
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login