OHA Drinking Water Services
OR41
PWS ID: 00953 ---- WILLAMINA, CITY OF
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
4Q2016 Oct 06, 2016 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.026 0.033 0.013 0.015
3Q2016 Jul 20, 2016 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.027 0.023 0.015 0.012
2Q2016 Apr 27, 2016 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.029 0.024 0.016 0.014
1Q2016 Jan 20, 2016 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.030 0.028 0.016 0.015
4Q2015 Oct 21, 2015 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.030 0.039 0.018 0.020
3Q2015 Jul 22, 2015 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.029 0.028 0.017 0.015
2Q2015 Apr 22, 2015 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.026 0.024 0.018 0.016
1Q2015 Feb 11, 2015 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.026 0.025 0.019 0.019
4Q2014 Oct 15, 2014 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.026 0.034 0.018 0.021
3Q2014 Jul 09, 2014 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.026 0.022 0.020 0.017
2Q2014 Apr 16, 2014 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.019 0.023 0.014 0.018
1Q2014 Jan 28, 2014 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.014 0.010
4Q2013 Oct 03, 2013 2DBP-01 360 SW MAPLE ST (POST OFFICE) 0.011 0.008



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