OHA Drinking Water Services
OR41
PWS ID: 01139 ---- MIDLAND WATER ASSOCIATION
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
4Q2018 Nov 21, 2018 2DBP-01 79490 ERICKSON DIKE 0.007 0.010 0.006 0.007
3Q2018 Aug 22, 2018 2DBP-01 79490 ERICKSON DIKE 0.006 0.008 0.021 0.007
2Q2018 May 23, 2018 2DBP-01 79490 ERICKSON DIKE 0.007 0.003 0.023 0.024
1Q2018 Feb 28, 2018 2DBP-01 79490 ERICKSON DIKE 0.009 0.006 0.030 0.023
4Q2017 Oct 25, 2017 2DBP-01 79490 ERICKSON DIKE 0.009 0.029 0.053
3Q2017 Aug 23, 2017 2DBP-01 79490 ERICKSON DIKE 0.009 0.012 0.009 0.011
2Q2017 2DBP-01 79490 ERICKSON DIKE 0.001 0
1Q2017 Mar 01, 2017 2DBP-01 79490 ERICKSON DIKE 0.001 0.001 0 0