OHA Drinking Water Services
OR41
PWS ID: 00534 ---- MOLALLA, 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
1Q2026 Feb 03, 2026 2DBP-01 1424 TOLIVER RD 0.016 0.015 0.013 0.013
1Q2026 Feb 03, 2026 2DBP-03 921 MEADOWLAWN PL 0.016 0.015 0.013 0.012
4Q2025 Nov 04, 2025 2DBP-01 1424 TOLIVER RD 0.016 0.019 0.013 0.016
4Q2025 Nov 04, 2025 2DBP-03 921 MEADOWLAWN PL 0.016 0.019 0.013 0.016
3Q2025 Aug 13, 2025 2DBP-01 1424 TOLIVER RD 0.015 0.015 0.012 0.012
3Q2025 Aug 13, 2025 2DBP-03 921 MEADOWLAWN PL 0.014 0.015 0.012 0.012
2Q2025 May 06, 2025 2DBP-01 1424 TOLIVER RD 0.015 0.012 0.012 0.012
2Q2025 May 06, 2025 2DBP-03 921 MEADOWLAWN PL 0.014 0.012 0.012 0.011
1Q2025 Feb 20, 2025 2DBP-01 1424 TOLIVER RD 0.015 0.014 0.012 0.012
1Q2025 Feb 20, 2025 2DBP-03 921 MEADOWLAWN PL 0.014 0.013 0.011 0.011
4Q2024 Nov 13, 2024 2DBP-01 1424 TOLIVER RD 0.015 0.018 0.012 0.014
4Q2024 Nov 13, 2024 2DBP-03 921 MEADOWLAWN PL 0.014 0.016 0.011 0.013
3Q2024 Aug 13, 2024 2DBP-01 1424 TOLIVER RD 0.015 0.016 0.012 0.011
3Q2024 Aug 13, 2024 2DBP-03 921 MEADOWLAWN PL 0.013 0.015 0.011 0.011
2Q2024 May 22, 2024 2DBP-01 1424 TOLIVER RD 0.015 0.013 0.012 0.011
2Q2024 May 22, 2024 2DBP-03 921 MEADOWLAWN PL 0.014 0.011 0.012 0.010
1Q2024 Feb 13, 2024 2DBP-01 1424 TOLIVER RD 0.016 0.014 0.013 0.012
1Q2024 Feb 13, 2024 2DBP-03 921 MEADOWLAWN PL 0.014 0.014 0.012 0.011
4Q2023 Nov 14, 2023 2DBP-01 1424 TOLIVER RD 0.016 0.017 0.013 0.015
4Q2023 Nov 14, 2023 2DBP-03 921 MEADOWLAWN PL 0.015 0.016 0.012 0.014
3Q2023 Aug 15, 2023 2DBP-01 1424 TOLIVER RD 0.017 0.017 0.014 0.013
3Q2023 Aug 15, 2023 2DBP-03 921 MEADOWLAWN PL 0.016 0.017 0.013 0.012
2Q2023 May 23, 2023 2DBP-01 1424 TOLIVER RD 0.016 0.015 0.013 0.013
2Q2023 May 23, 2023 2DBP-03 921 MEADOWLAWN PL 0.015 0.014 0.013 0.012
1Q2023 Mar 16, 2023 2DBP-01 1424 TOLIVER RD 0.015 0.014 0.013 0.012
1Q2023 Mar 16, 2023 2DBP-03 921 MEADOWLAWN PL 0.015 0.014 0.012 0.012
4Q2022 Nov 01, 2022 2DBP-01 1424 TOLIVER RD 0.015 0.019 0.013 0.017
4Q2022 Nov 01, 2022 2DBP-03 921 MEADOWLAWN PL 0.015 0.018 0.012 0.016
3Q2022 Aug 23, 2022 2DBP-01 1424 TOLIVER RD 0.013 0.013 0.010 0.010
3Q2022 Aug 23, 2022 2DBP-03 921 MEADOWLAWN PL 0.012 0.013 0.009 0.010
2Q2022 May 17, 2022 2DBP-01 1424 TOLIVER RD 0.011 0.011 0.009 0.010
2Q2022 May 17, 2022 2DBP-03 921 MEADOWLAWN PL 0.010 0.010 0.008 0.008
1Q2022 Feb 07, 2022 2DBP-01 1424 TOLIVER RD 0.009 0.009 0.008 0.008
1Q2022 Feb 07, 2022 2DBP-03 921 MEADOWLAWN PL 0.009 0.009 0.007 0.007
3Q2020 Aug 04, 2020 2DBP-01 1424 TOLIVER RD 0.014 0.017 0.013 0.014
3Q2020 Aug 04, 2020 2DBP-03 921 MEADOWLAWN PL 0.015 0.019 0.012 0.013
2Q2020 May 05, 2020 2DBP-01 1424 TOLIVER RD 0.013 0.012 0.012 0.011
2Q2020 May 05, 2020 2DBP-03 921 MEADOWLAWN PL 0.014 0.011 0.011 0.011
1Q2020 Feb 11, 2020 2DBP-01 1424 TOLIVER RD 0.013 0.013 0.011 0.010
1Q2020 Feb 11, 2020 2DBP-03 921 MEADOWLAWN PL 0.014 0.013 0.010 0.010
4Q2019 Nov 12, 2019 2DBP-01 1424 TOLIVER RD 0.012 0.013 0.011 0.012
4Q2019 Nov 12, 2019 2DBP-03 921 MEADOWLAWN PL 0.013 0.014 0.010 0.011
3Q2019 Aug 06, 2019 2DBP-01 1424 TOLIVER RD 0.014 0.014 0.011 0.011
3Q2019 Aug 06, 2019 2DBP-03 921 MEADOWLAWN PL 0.014 0.016 0.010 0.011
2Q2019 May 07, 2019 2DBP-01 1424 TOLIVER RD 0.013 0.012 0.011 0.011
2Q2019 May 07, 2019 2DBP-03 921 MEADOWLAWN PL 0.009 0.010 0.008 0.009
1Q2019 Feb 12, 2019 2DBP-01 1424 TOLIVER RD 0.013 0.012 0.011 0.010
1Q2019 Feb 12, 2019 2DBP-03 921 MEADOWLAWN PL 0.007 0.007 0.007 0.007
4Q2018 Nov 20, 2018 2DBP-01 1424 TOLIVER RD 0.013 0.016 0.011 0.013
4Q2018 Nov 20, 2018 2DBP-02 1413 MEADOWLARK PL 0.013 0.015 0.011 0.013
3Q2018 Aug 21, 2018 2DBP-01 1424 TOLIVER RD 0.013 0.013 0.012 0.011
3Q2018 Aug 21, 2018 2DBP-02 1413 MEADOWLARK PL 0.013 0.013 0.012 0.011
2Q2018 May 16, 2018 2DBP-01 1424 TOLIVER RD 0.014 0.013 0.013 0.012
2Q2018 May 16, 2018 2DBP-02 1413 MEADOWLARK PL 0.014 0.012 0.013 0.012
1Q2018 Feb 14, 2018 2DBP-01 1424 TOLIVER RD 0.013 0.012 0.013 0.012
1Q2018 Feb 14, 2018 2DBP-02 1413 MEADOWLARK PL 0.013 0.013 0.013 0.012
4Q2017 Nov 07, 2017 2DBP-01 1424 TOLIVER RD 0.013 0.015 0.014 0.016
4Q2017 Nov 07, 2017 2DBP-02 1413 MEADOWLARK PL 0.014 0.016 0.014 0.016
3Q2017 Aug 08, 2017 2DBP-01 1424 TOLIVER RD 0.012 0.013 0.013 0.013
3Q2017 Aug 08, 2017 2DBP-02 1413 MEADOWLARK PL 0.013 0.014 0.013 0.013
2Q2017 May 09, 2017 2DBP-01 1424 TOLIVER RD 0.013 0.011 0.013 0.012
2Q2017 May 09, 2017 2DBP-02 1413 MEADOWLARK PL 0.014 0.011 0.013 0.012
1Q2017 Feb 07, 2017 2DBP-01 1424 TOLIVER RD 0.013 0.012 0.013 0.013
1Q2017 Feb 07, 2017 2DBP-02 1413 MEADOWLARK PL 0.014 0.013 0.014 0.013
4Q2016 Nov 15, 2016 2DBP-01 1424 TOLIVER RD 0.013 0.014 0.013 0.014
4Q2016 Nov 15, 2016 2DBP-02 1413 MEADOWLARK PL 0.014 0.015 0.013 0.015
3Q2016 Aug 02, 2016 2DBP-01 1424 TOLIVER RD 0.013 0.014 0.014 0.013
3Q2016 Aug 02, 2016 2DBP-02 1413 MEADOWLARK PL 0.014 0.016 0.014 0.014
2Q2016 May 17, 2016 2DBP-01 1424 TOLIVER RD 0.012 0.011 0.013 0.012
2Q2016 May 17, 2016 2DBP-02 1413 MEADOWLARK PL 0.013 0.012 0.013 0.012
1Q2016 Feb 02, 2016 2DBP-01 1424 TOLIVER RD 0.013 0.011 0.013 0.012
1Q2016 Feb 02, 2016 2DBP-02 1413 MEADOWLARK PL 0.013 0.012 0.012 0.012
4Q2015 Nov 17, 2015 2DBP-01 1424 TOLIVER RD 0.014 0.015 0.014 0.015
4Q2015 Nov 17, 2015 2DBP-02 1413 MEADOWLARK PL 0.014 0.015 0.014 0.015
3Q2015 Aug 11, 2015 2DBP-01 1424 TOLIVER RD 0.013 0.013 0.013 0.013
3Q2015 Aug 11, 2015 2DBP-02 1413 MEADOWLARK PL 0.014 0.013 0.013 0.013
2Q2015 May 12, 2015 2DBP-01 1424 TOLIVER RD 0.014 0.013 0.013 0.012
2Q2015 May 12, 2015 2DBP-02 1413 MEADOWLARK PL 0.015 0.014 0.013 0.012
1Q2015 Feb 17, 2015 2DBP-01 1424 TOLIVER RD 0.014 0.013 0.013 0.013
1Q2015 Feb 17, 2015 2DBP-02 1413 MEADOWLARK PL 0.015 0.014 0.013 0.013
4Q2014 Nov 18, 2014 2DBP-01 1424 TOLIVER RD 0.014 0.016 0.012 0.014
4Q2014 Nov 18, 2014 2DBP-02 1413 MEADOWLARK PL 0.014 0.016 0.012 0.014
3Q2014 Aug 26, 2014 2DBP-01 1424 TOLIVER RD 0.015 0.014 0.013 0.012
3Q2014 Aug 26, 2014 2DBP-02 1413 MEADOWLARK PL 0.015 0.015 0.013 0.012
2Q2014 May 13, 2014 2DBP-01 1424 TOLIVER RD 0.010 0.014 0.009 0.012
2Q2014 May 13, 2014 2DBP-02 1413 MEADOWLARK PL 0.010 0.014 0.009 0.012
1Q2014 Feb 11, 2014 2DBP-01 1424 TOLIVER RD 0.007 0.006
1Q2014 Feb 11, 2014 2DBP-02 1413 MEADOWLARK PL 0.006 0.006
4Q2013 Nov 13, 2013 2DBP-01 1424 TOLIVER RD 0.005 0.004
4Q2013 Nov 13, 2013 2DBP-02 1413 MEADOWLARK PL 0.005 0.004