OHA Drinking Water Services
OR41
PWS ID: 00971 ---- CAVE JUNCTION, 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
4Q2025 Nov 18, 2025 2DBP-01 RESERVOIR #4 0.022 0.024 0.020 0.020
3Q2025 Aug 05, 2025 2DBP-01 RESERVOIR #4 0.020 0.022 0.018 0.018
2Q2025 May 08, 2025 2DBP-01 RESERVOIR #4 0.018 0.018 0.020 0.020
1Q2025 Feb 04, 2025 2DBP-01 RESERVOIR #4 0.019 0.017 0.018 0.020
4Q2024 Nov 05, 2024 2DBP-01 RESERVOIR #4 0.021 0.020 0.017 0.015
3Q2024 2DBP-01 RESERVOIR #4 0.022 0.019
2Q2024 Jun 18, 2024 2DBP-01 RESERVOIR #4 0.021 0.022 0.019 0.019
1Q2024 Feb 26, 2024 2DBP-01 RESERVOIR #4 0.019 0.021 0.019 0.020
4Q2023 Nov 14, 2023 2DBP-01 RESERVOIR #4 0.017 0.018 0.018 0.018
3Q2023 Aug 22, 2023 2DBP-01 RESERVOIR #4 0.015 0.016 0.016 0.018
2Q2023 May 02, 2023 2DBP-01 RESERVOIR #4 0.014 0.014 0.016 0.017
1Q2023 Feb 13, 2023 2DBP-01 RESERVOIR #4 0.015 0.015 0.016 0.016
4Q2022 Nov 01, 2022 2DBP-01 RESERVOIR #4 0.015 0.014 0.018 0.012
3Q2022 2DBP-01 RESERVOIR #4
2Q2022 May 03, 2022 2DBP-01 RESERVOIR #4 0.014 0.016 0.020 0.021
1Q2022 Feb 01, 2022 2DBP-01 RESERVOIR #4 0.016 0.015 0.019 0.022
4Q2021 2DBP-01 RESERVOIR #4
3Q2021 Aug 24, 2021 2DBP-01 RESERVOIR #4 0.017 0.016 0.018 0.019
2Q2021 May 20, 2021 2DBP-01 RESERVOIR #4 0.017 0.020 0.018 0.019
1Q2021 Feb 10, 2021 2DBP-01 RESERVOIR #4 0.015 0.017 0.018 0.020
4Q2020 Nov 03, 2020 2DBP-01 RESERVOIR #4 0.014 0.013 0.017 0.013
3Q2020 Aug 11, 2020 2DBP-01 RESERVOIR #4 0.013 0.013 0.017 0.018
2Q2020 May 05, 2020 2DBP-01 RESERVOIR #4 0.016 0.015 0.017 0.018
1Q2020 Feb 20, 2020 2DBP-01 RESERVOIR #4 0.016 0.017 0.018 0.020
4Q2019 Dec 03, 2019 2DBP-01 RESERVOIR #4 0.016 0.014 0.017 0.013
3Q2019 Aug 20, 2019 2DBP-01 RESERVOIR #4 0.018 0.019 0.020 0.019
2Q2019 May 07, 2019 2DBP-01 RESERVOIR #4 0.017 0.017 0.020 0.021
1Q2019 Feb 05, 2019 2DBP-01 RESERVOIR #4 0.017 0.018 0.019 0.021
4Q2018 Dec 11, 2018 2DBP-01 RESERVOIR #4 0.017 0.016 0.019 0.018
3Q2018 Aug 07, 2018 2DBP-01 RESERVOIR #4 0.017 0.018 0.018 0.018
2Q2018 Apr 10, 2018 2DBP-01 RESERVOIR #4 0.018 0.016 0.020 0.019
1Q2018 Jan 09, 2018 2DBP-01 RESERVOIR #4 0.019 0.020 0.020 0.023
4Q2017 Oct 10, 2017 2DBP-01 RESERVOIR #4 0.017 0.017 0.019 0.018
3Q2017 Aug 01, 2017 2DBP-01 RESERVOIR #4 0.018 0.019 0.018 0.020
2Q2017 Apr 04, 2017 2DBP-01 RESERVOIR #4 0.016 0.015 0.015 0.017
1Q2017 Feb 15, 2017 2DBP-01 RESERVOIR #4 0.017 0.016 0.016 0.017
4Q2016 Oct 04, 2016 2DBP-01 RESERVOIR #4 0.018 0.017 0.017 0.014
3Q2016 Jul 19, 2016 2DBP-01 RESERVOIR #4 0.018 0.018 0.017 0.016
2Q2016 Apr 05, 2016 2DBP-01 RESERVOIR #4 0.018 0.018 0.018 0.019
1Q2016 Jan 05, 2016 2DBP-01 RESERVOIR #4 0.019 0.019 0.018 0.019
4Q2015 Oct 06, 2015 2DBP-01 RESERVOIR #4 0.020 0.019 0.023 0.015
3Q2015 Jul 21, 2015 2DBP-01 RESERVOIR #4 0.020 0.020 0.023 0.023
2Q2015 Apr 07, 2015 2DBP-01 RESERVOIR #4 0.021 0.020 0.026 0.025
1Q2015 Feb 03, 2015 2DBP-01 RESERVOIR #4 0.021 0.022 0.026 0.034
4Q2014 Nov 04, 2014 2DBP-01 RESERVOIR #4 0.019 0.021 0.018 0.017
3Q2014 2DBP-01 RESERVOIR #4 0.018 0.017
2Q2014 Jun 03, 2014 2DBP-01 RESERVOIR #4 0.013 0.018 0.013 0.018
1Q2014 Mar 12, 2014 2DBP-01 RESERVOIR #4 0.009 0.008
4Q2013 Nov 05, 2013 2DBP-01 RESERVOIR #4 0.004 0.003