OHA Drinking Water Services
OR41
PWS ID: 00305 ---- FOREST GROVE, 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
1Q2013 Jan 08, 2013 2DBP-01 SAMPLE SITE 2-2 (ZN 2-2) 0.019 0.017 0.021 0.018
4Q2012 Oct 02, 2012 2DBP-01 SAMPLE SITE 2-2 (ZN 2-2) 0.017 0.024 0.019 0.026
3Q2012 Jul 10, 2012 2DBP-01 SAMPLE SITE 2-2 (ZN 2-2) 0.009 0.012
2Q2012 Apr 03, 2012 2DBP-01 SAMPLE SITE 2-2 (ZN 2-2) 0.004 0.006
2Q2024 Apr 23, 2024 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.015 0.026 0.020
1Q2024 Jan 23, 2024 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.024 0.020 0.028 0.027
4Q2023 Oct 10, 2023 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.027 0.029 0.031 0.033
3Q2023 Jul 18, 2023 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.032 0.026 0.032 0.031
2Q2023 Apr 11, 2023 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.033 0.032 0.031 0.028
1Q2023 Jan 17, 2023 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.029 0.031 0.030 0.032
4Q2022 Nov 08, 2022 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.026 0.037 0.027 0.035
3Q2022 Sep 13, 2022 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.022 0.025 0.024
2Q2022 Apr 26, 2022 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.019 0.014 0.027 0.022
1Q2022 Mar 08, 2022 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.019 0.027 0.026
4Q2021 Oct 19, 2021 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.021 0.025 0.029 0.034
3Q2021 Jul 20, 2021 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.022 0.028 0.030
2Q2021 May 04, 2021 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.016 0.026 0.023
1Q2021 Jan 12, 2021 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.018 0.027 0.025
4Q2020 Nov 03, 2020 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.021 0.029 0.032
3Q2020 Jul 21, 2020 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.018 0.027 0.027
2Q2020 Apr 07, 2020 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.019 0.015 0.030 0.025
1Q2020 Jan 14, 2020 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.020 0.030 0.030
4Q2019 Oct 08, 2019 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.021 0.023 0.030 0.031
3Q2019 Jul 16, 2019 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.021 0.021 0.028 0.033
2Q2019 Apr 09, 2019 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.020 0.019 0.024 0.023
1Q2019 Jan 15, 2019 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.019 0.020 0.024 0.024
4Q2018 Oct 23, 2018 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.021 0.023 0.023
3Q2018 Jul 10, 2018 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.016 0.025 0.025
2Q2018 Apr 10, 2018 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.017 0.016 0.025 0.023
1Q2018 Jan 23, 2018 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.017 0.017 0.023 0.023
4Q2017 Oct 17, 2017 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.017 0.021 0.023 0.026
3Q2017 Jul 25, 2017 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.014 0.014 0.022 0.023
2Q2017 Apr 18, 2017 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.012 0.023 0.020
1Q2017 Jan 24, 2017 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.016 0.023 0.023
4Q2016 Oct 25, 2016 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.017 0.022 0.025
3Q2016 Jul 12, 2016 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.021 0.018 0.020 0.023
2Q2016 Apr 12, 2016 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.022 0.017 0.018 0.017
1Q2016 Jan 12, 2016 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.022 0.023 0.018 0.018
4Q2015 Oct 06, 2015 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.029 0.028 0.023 0.018
3Q2015 Jul 21, 2015 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.027 0.027 0.023 0.023
2Q2015 Apr 07, 2015 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.024 0.022 0.023 0.022
1Q2015 Jan 06, 2015 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.026 0.031 0.025 0.028
4Q2014 Oct 07, 2014 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.018 0.023 0.019 0.020
3Q2014 Jul 01, 2014 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.016 0.020 0.020
2Q2014 Apr 01, 2014 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.015 0.016 0.021 0.020
1Q2014 Jan 07, 2014 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.013 0.013 0.019 0.019
4Q2013 Oct 15, 2013 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.013 0.016 0.018 0.022
3Q2013 Jul 09, 2013 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.014 0.019 0.018
2Q2013 Apr 02, 2013 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.016 0.014 0.021 0.017
1Q2013 Jan 08, 2013 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.017 0.015 0.023 0.020
4Q2012 Oct 02, 2012 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.015 0.022 0.020 0.027
3Q2012 Jul 10, 2012 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.009 0.013
2Q2012 Apr 03, 2012 2DBP-02 SAMPLE SITE 1-3 (ZN 1-3) 0.004 0.006
1Q2013 Jan 08, 2013 2DBP-03 SAMPLE SITE 2-1 (ZN 2-1) 0.017 0.015 0.023 0.020
4Q2012 Oct 02, 2012 2DBP-03 SAMPLE SITE 2-1 (ZN 2-1) 0.015 0.022 0.020 0.027
3Q2012 Jul 10, 2012 2DBP-03 SAMPLE SITE 2-1 (ZN 2-1) 0.009 0.013
2Q2012 Apr 03, 2012 2DBP-03 SAMPLE SITE 2-1 (ZN 2-1) 0.004 0.006
2Q2024 Apr 23, 2024 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.026 0.021 0.027 0.021
1Q2024 Jan 23, 2024 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.031 0.026 0.029 0.029
4Q2023 Oct 10, 2023 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.036 0.041 0.031 0.032
3Q2023 Jul 18, 2023 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.031 0.030 0.029 0.033
2Q2023 Apr 11, 2023 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.028 0.031 0.022 0.024
1Q2023 Jan 17, 2023 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.023 0.029 0.021 0.024
4Q2022 Nov 08, 2022 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.017 0.023 0.019 0.020
3Q2022 Sep 13, 2022 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.016 0.014 0.022 0.016
2Q2022 Apr 26, 2022 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.013 0.028 0.022
1Q2022 Mar 22, 2022 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.019 0.029 0.029
4Q2021 Oct 19, 2021 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.025 0.028 0.034
3Q2021 Jul 20, 2021 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.023 0.028 0.029
2Q2021 May 04, 2021 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.017 0.024 0.022
1Q2021 Jan 12, 2021 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.019 0.026 0.024
4Q2020 Nov 03, 2020 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.022 0.028 0.030
3Q2020 Jul 21, 2020 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.018 0.027 0.026
2Q2020 Apr 07, 2020 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.016 0.031 0.027
1Q2020 Jan 14, 2020 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.021 0.031 0.031
4Q2019 Oct 08, 2019 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.023 0.022 0.029 0.032
3Q2019 Jul 16, 2019 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.024 0.028 0.032
2Q2019 Apr 09, 2019 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.021 0.020 0.024 0.023
1Q2019 Jan 15, 2019 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.021 0.024 0.022 0.023
4Q2018 Oct 23, 2018 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.020 0.022 0.025
3Q2018 Jul 10, 2018 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.019 0.022 0.022
2Q2018 Apr 10, 2018 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.021 0.021 0.022 0.020
1Q2018 Jan 23, 2018 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.022 0.023 0.021
4Q2017 Oct 17, 2017 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.025 0.024 0.027
3Q2017 Jul 25, 2017 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.016 0.022 0.023
2Q2017 Apr 18, 2017 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.021 0.022 0.021
1Q2017 Jan 24, 2017 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.021 0.020 0.021
4Q2016 Oct 25, 2016 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.023 0.028 0.019 0.021
3Q2016 Jul 12, 2016 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.021 0.018 0.020
2Q2016 Apr 12, 2016 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.024 0.020 0.016 0.015
1Q2016 Jan 12, 2016 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.024 0.016 0.016
4Q2015 Oct 06, 2015 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.029 0.025 0.021 0.018
3Q2015 Jul 21, 2015 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.031 0.029 0.024 0.022
2Q2015 Apr 07, 2015 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.029 0.026 0.022 0.022
1Q2015 Jan 06, 2015 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.032 0.037 0.023 0.026
4Q2014 Oct 07, 2014 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.026 0.032 0.018 0.023
3Q2014 Jul 01, 2014 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.023 0.021 0.016 0.015
2Q2014 Apr 01, 2014 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.022 0.023 0.018 0.017
1Q2014 Jan 07, 2014 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.021 0.020 0.016 0.015
4Q2013 Oct 15, 2013 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.021 0.025 0.016 0.020
3Q2013 Jul 09, 2013 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.018 0.017 0.016
2Q2013 Apr 02, 2013 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.020 0.020 0.017 0.015
1Q2013 Jan 08, 2013 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.019 0.018 0.017 0.015
4Q2012 Oct 02, 2012 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.016 0.022 0.015 0.021
3Q2012 Jul 10, 2012 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.009 0.009
2Q2012 Apr 03, 2012 2DBP-04 SAMPLE SITE 1-1 (ZN 1-1) 0.004 0.004




More information for this water system: SDWIS ID 3887
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