OHA Drinking Water Services
OR41
PWS ID: 00719 ---- UMPQUA BASIN WATER ASSOC
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
1Q2022 Feb 17, 2022 2DBP-01 STEINHAUER 0.034 0.030 0.026 0.024
1Q2022 Feb 17, 2022 2DBP-02 ROGERS RD & OAK HILL RD 0.029 0.027 0.025 0.025
4Q2021 Nov 19, 2021 2DBP-01 STEINHAUER 0.034 0.039 0.029 0.028
4Q2021 Nov 19, 2021 2DBP-02 ROGERS RD & OAK HILL RD 0.031 0.035 0.029 0.028
3Q2021 Aug 19, 2021 2DBP-01 STEINHAUER 0.032 0.033 0.028 0.024
3Q2021 Aug 19, 2021 2DBP-02 ROGERS RD & OAK HILL RD 0.028 0.028 0.027 0.024
2Q2021 May 27, 2021 2DBP-01 STEINHAUER 0.029 0.031 0.036 0.035
2Q2021 May 27, 2021 2DBP-02 ROGERS RD & OAK HILL RD 0.027 0.027 0.034 0.031
1Q2021 Feb 18, 2021 2DBP-01 STEINHAUER 0.023 0.023 0.038 0.038
1Q2021 Mar 11, 2021 2DBP-02 ROGERS RD & OAK HILL RD 0.029 0.029 0.041 0.041
4Q2018 Oct 31, 2018 2DBP-01 STEINHAUER 0.024 0.024 0.023 0.021
4Q2018 Oct 31, 2018 2DBP-02 ROGERS RD & OAK HILL RD 0.024 0.025 0.021 0.019
3Q2018 Aug 22, 2018 2DBP-01 STEINHAUER 0.029 0.025 0.037 0.022
3Q2018 Aug 22, 2018 2DBP-02 ROGERS RD & OAK HILL RD 0.030 0.026 0.026 0.020
2Q2018 May 23, 2018 2DBP-01 STEINHAUER 0.032 0.028 0.038 0.041
2Q2018 May 23, 2018 2DBP-02 ROGERS RD & OAK HILL RD 0.032 0.028 0.027 0.029
1Q2018 Feb 22, 2018 2DBP-01 STEINHAUER 0.031 0.031 0.040 0.038
1Q2018 Feb 22, 2018 2DBP-02 ROGERS RD & OAK HILL RD 0.032 0.031 0.027 0.027
4Q2017 Oct 25, 2017 2DBP-01 STEINHAUER 0.031 0.037 0.042 0.051
4Q2017 Oct 25, 2017 2DBP-02 ROGERS RD & OAK HILL RD 0.035 0.039 0.031 0.030
3Q2017 Aug 16, 2017 2DBP-01 STEINHAUER 0.034 0.029 0.041 0.028
3Q2017 Aug 16, 2017 2DBP-02 ROGERS RD & OAK HILL RD 0.035 0.034 0.039 0.026
2Q2017 Jun 07, 2017 2DBP-01 STEINHAUER 0.030 0.030 0.039 0.046
2Q2017 Jun 07, 2017 2DBP-02 ROGERS RD & OAK HILL RD 0.033 0.031 0.036 0.042
1Q2017 Mar 08, 2017 2DBP-01 STEINHAUER 0.033 0.031 0.030 0.038
1Q2017 Mar 08, 2017 2DBP-02 ROGERS RD & OAK HILL RD 0.033 0.034 0.031 0.039
4Q2016 Nov 30, 2016 2DBP-01 STEINHAUER 0.034 0.042 0.033 0.038
4Q2016 Nov 30, 2016 2DBP-02 ROGERS RD & OAK HILL RD 0.033 0.035 0.030 0.038
3Q2016 Aug 18, 2016 2DBP-01 STEINHAUER 0.034 0.024 0.039 0.018
3Q2016 Aug 18, 2016 2DBP-02 ROGERS RD & OAK HILL RD 0.038 0.031 0.027 0.013
2Q2016 Jun 15, 2016 2DBP-01 STEINHAUER 0.038 0.036 0.041 0.038
2Q2016 Jun 15, 2016 2DBP-02 ROGERS RD & OAK HILL RD 0.039 0.037 0.030 0.029
1Q2016 Feb 17, 2016 2DBP-01 STEINHAUER 0.038 0.038 0.048 0.051
1Q2016 Feb 17, 2016 2DBP-02 ROGERS RD & OAK HILL RD 0.040 0.040 0.035 0.036
4Q2015 Dec 02, 2015 2DBP-01 STEINHAUER 0.043 0.046 0.051 0.060
4Q2015 Dec 02, 2015 2DBP-02 ROGERS RD & OAK HILL RD 0.044 0.049 0.040 0.040
3Q2015 Aug 12, 2015 2DBP-01 STEINHAUER 0.038 0.038 0.035 0.031
3Q2015 Aug 12, 2015 2DBP-02 ROGERS RD & OAK HILL RD 0.039 0.037 0.033 0.029
2Q2015 May 20, 2015 2DBP-01 STEINHAUER 0.028 0.036 0.031 0.039
2Q2015 May 20, 2015 2DBP-02 ROGERS RD & OAK HILL RD 0.030 0.038 0.030 0.038
1Q2015 Feb 25, 2015 2DBP-01 STEINHAUER 0.021 0.022
1Q2015 Feb 25, 2015 2DBP-02 ROGERS RD & OAK HILL RD 0.023 0.022
4Q2014 Oct 22, 2014 2DBP-01 STEINHAUER 0.009 0.008
4Q2014 Oct 01, 2014 2DBP-02 ROGERS RD & OAK HILL RD 0.012 0.008



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