OHA Drinking Water Services
OR41
PWS ID: 00171 ---- CARLTON, 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
1Q2024 Jan 10, 2024 2DBP-01 915 N 4TH ST 0.031 0.027
1Q2024 Jan 10, 2024 2DBP-02 1183 E MAIN ST 0.023 0.021
4Q2023 Dec 06, 2023 2DBP-01 915 N 4TH ST 0.033 0.033
4Q2023 Dec 06, 2023 2DBP-02 1183 E MAIN ST 0.025 0.024
3Q2023 Sep 20, 2023 2DBP-01 915 N 4TH ST 0.038 0.046
3Q2023 Sep 20, 2023 2DBP-02 1183 E MAIN ST 0.030 0.038
2Q2023 Jun 21, 2023 2DBP-01 915 N 4TH ST 0.028 0.023
2Q2023 Jun 21, 2023 2DBP-02 1183 E MAIN ST 0.017 0.014
1Q2023 Feb 15, 2023 2DBP-01 915 N 4TH ST 0.024 0.024
1Q2023 Feb 15, 2023 2DBP-02 1183 E MAIN ST 0.017 0.016
4Q2022 2DBP-01 915 N 4TH ST 0.024
4Q2022 2DBP-02 1183 E MAIN ST 0.018
3Q2022 Sep 20, 2022 2DBP-01 915 N 4TH ST 0.032 0.028
3Q2022 Sep 20, 2022 2DBP-02 1183 E MAIN ST 0.020 0.019
2Q2022 Apr 20, 2022 2DBP-01 915 N 4TH ST 0.029 0.026
2Q2022 Apr 20, 2022 2DBP-02 1183 E MAIN ST 0.018 0.018
1Q2022 Feb 02, 2022 2DBP-01 915 N 4TH ST 0.027 0.028
1Q2022 Feb 02, 2022 2DBP-02 1183 E MAIN ST 0.016 0.017
4Q2021 Oct 06, 2021 2DBP-01 915 N 4TH ST 0.026 0.037
4Q2021 Oct 06, 2021 2DBP-02 1183 E MAIN ST 0.014 0.019
3Q2021 Jul 14, 2021 2DBP-01 915 N 4TH ST 0.023 0.020
3Q2021 Jul 14, 2021 2DBP-02 1183 E MAIN ST 0.016 0.012
2Q2021 Apr 14, 2021 2DBP-01 915 N 4TH ST 0.022 0.018
2Q2021 Apr 14, 2021 2DBP-02 1183 E MAIN ST 0.016 0.013
1Q2021 Jan 27, 2021 2DBP-01 915 N 4TH ST 0.023 0.022
1Q2021 Jan 27, 2021 2DBP-02 1183 E MAIN ST 0.016 0.016
4Q2020 Oct 28, 2020 2DBP-01 915 N 4TH ST 0.025 0.031
4Q2020 Oct 28, 2020 2DBP-02 1183 E MAIN ST 0.017 0.023
3Q2020 Jul 22, 2020 2DBP-01 915 N 4TH ST 0.025 0.022
3Q2020 Jul 22, 2020 2DBP-02 1183 E MAIN ST 0.016 0.012
2Q2020 Apr 15, 2020 2DBP-01 915 N 4TH ST 0.026 0.021
2Q2020 Apr 15, 2020 2DBP-02 1183 E MAIN ST 0.016 0.014
1Q2020 Jan 15, 2020 2DBP-01 915 N 4TH ST 0.025 0.027
1Q2020 Jan 15, 2020 2DBP-02 1183 E MAIN ST 0.015 0.016
4Q2019 Oct 30, 2019 2DBP-01 915 N 4TH ST 0.024 0.031
4Q2019 Oct 30, 2019 2DBP-02 1183 E MAIN ST 0.014 0.019
3Q2019 Jul 10, 2019 2DBP-01 915 N 4TH ST 0.023 0.022
3Q2019 Jul 10, 2019 2DBP-02 1183 E MAIN ST 0.012 0.011
2Q2019 Apr 03, 2019 2DBP-01 915 N 4TH ST 0.023 0.019
2Q2019 Apr 03, 2019 2DBP-02 1183 E MAIN ST 0.011 0.009
1Q2019 Jan 23, 2019 2DBP-01 915 N 4TH ST 0.023 0.024
1Q2019 Jan 23, 2019 2DBP-02 1183 E MAIN ST 0.012 0.012
4Q2018 Oct 17, 2018 2DBP-01 915 N 4TH ST 0.022 0.028
4Q2018 Oct 17, 2018 2DBP-02 1183 E MAIN ST 0.012 0.015
3Q2018 Jul 05, 2018 2DBP-01 915 N 4TH ST 0.024 0.020
3Q2018 Jul 05, 2018 2DBP-02 1183 E MAIN ST 0.013 0.011
2Q2018 Apr 11, 2018 2DBP-01 915 N 4TH ST 0.023 0.019
2Q2018 Apr 11, 2018 2DBP-02 1183 E MAIN ST 0.013 0.011
1Q2018 Jan 03, 2018 2DBP-01 915 N 4TH ST 0.024 0.024
1Q2018 Jan 03, 2018 2DBP-02 1183 E MAIN ST 0.012 0.013
4Q2017 Oct 04, 2017 2DBP-01 915 N 4TH ST 0.023 0.033
4Q2017 Oct 04, 2017 2DBP-02 1183 E MAIN ST 0.011 0.016
3Q2017 Jul 12, 2017 2DBP-01 915 N 4TH ST 0.018 0.018
3Q2017 Jul 12, 2017 2DBP-02 1183 E MAIN ST 0.011 0.010
2Q2017 Apr 05, 2017 2DBP-01 915 N 4TH ST 0.018 0.015
2Q2017 Apr 05, 2017 2DBP-02 1183 E MAIN ST 0.011 0.008
1Q2017 Jan 25, 2017 2DBP-01 915 N 4TH ST 0.017 0.017
1Q2017 Jan 25, 2017 2DBP-02 1183 E MAIN ST 0.011 0.011
4Q2016 Nov 02, 2016 2DBP-01 915 N 4TH ST 0.018 0.023
4Q2016 Nov 02, 2016 2DBP-02 1183 E MAIN ST 0.011 0.014
3Q2016 Jul 13, 2016 2DBP-01 915 N 4TH ST 0.027 0.017
3Q2016 Jul 13, 2016 2DBP-02 1183 E MAIN ST 0.016 0.009
2Q2016 Apr 06, 2016 2DBP-01 915 N 4TH ST 0.030 0.023
2Q2016 Apr 06, 2016 2DBP-02 1183 E MAIN ST 0.016 0.014
1Q2016 Jan 13, 2016 2DBP-01 915 N 4TH ST 0.031 0.030
1Q2016 Jan 13, 2016 2DBP-02 1183 E MAIN ST 0.017 0.016
4Q2015 Oct 07, 2015 2DBP-01 915 N 4TH ST 0.031 0.045
4Q2015 Oct 07, 2015 2DBP-02 1183 E MAIN ST 0.018 0.026
3Q2015 Jul 15, 2015 2DBP-01 915 N 4TH ST 0.036 0.024
3Q2015 Jul 15, 2015 2DBP-02 1183 E MAIN ST 0.013 0.012
2Q2015 Apr 08, 2015 2DBP-01 915 N 4TH ST 0.034 0.030
2Q2015 Apr 08, 2015 2DBP-02 1183 E MAIN ST 0.012 0.011
1Q2015 Jan 14, 2015 2DBP-01 915 N 4TH ST 0.036 0.033
1Q2015 Jan 14, 2015 2DBP-02 1183 E MAIN ST 0.011 0.012
4Q2014 Oct 08, 2014 2DBP-01 915 N 4TH ST 0.037 0.054
4Q2014 Oct 08, 2014 2DBP-02 1183 E MAIN ST 0.011 0.015
3Q2014 Jul 02, 2014 2DBP-01 915 N 4TH ST 0.034 0.023
3Q2014 Jul 02, 2014 2DBP-02 1183 E MAIN ST 0.009 0.010
2Q2014 May 14, 2014 2DBP-01 915 N 4TH ST 0.027 0.032
2Q2014 May 14, 2014 2DBP-02 1183 E MAIN ST 0.005 0.006
1Q2014 Feb 12, 2014 2DBP-01 915 N 4TH ST 0.021
1Q2014 Feb 12, 2014 2DBP-02 1183 E MAIN ST 0.004
4Q2013 Oct 16, 2013 2DBP-01 915 N 4TH ST 0.018
4Q2013 Oct 16, 2013 2DBP-02 1183 E MAIN ST 0.003



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