OHA Drinking Water Services
OR41
PWS ID: 00548 ---- CLARKS BRANCH 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
4Q2025 Nov 07, 2025 2DBP-01 6239 DOLE ROAD 0.025 0.030 0.022 0.026
3Q2025 Aug 05, 2025 2DBP-01 6239 DOLE ROAD 0.025 0.025 0.022 0.016
2Q2025 May 01, 2025 2DBP-01 6239 DOLE ROAD 0.030 0.021 0.027 0.023
1Q2025 Feb 04, 2025 2DBP-01 6239 DOLE ROAD 0.030 0.029 0.028 0.028
4Q2024 Nov 01, 2024 2DBP-01 6239 DOLE ROAD 0.031 0.035 0.026 0.032
3Q2024 Aug 06, 2024 2DBP-01 6239 DOLE ROAD 0.031 0.036 0.024 0.025
2Q2024 May 01, 2024 2DBP-01 6239 DOLE ROAD 0.031 0.021 0.021 0.021
1Q2024 Feb 01, 2024 2DBP-01 6239 DOLE ROAD 0.032 0.031 0.024 0.020
4Q2023 Nov 02, 2023 2DBP-01 6239 DOLE ROAD 0.034 0.036 0.027 0.027
3Q2023 Aug 03, 2023 2DBP-01 6239 DOLE ROAD 0.036 0.039 0.028 0.025
2Q2023 May 08, 2023 2DBP-01 6239 DOLE ROAD 0.038 0.028 0.027 0.031
1Q2023 Feb 03, 2023 2DBP-01 6239 DOLE ROAD 0.039 0.037 0.028 0.025
4Q2022 Nov 01, 2022 2DBP-01 6239 DOLE ROAD 0.040 0.044 0.033 0.029
3Q2022 Aug 10, 2022 2DBP-01 6239 DOLE ROAD 0.043 0.044 0.042 0.028
2Q2022 May 05, 2022 2DBP-01 6239 DOLE ROAD 0.048 0.035 0.046 0.048
1Q2022 Feb 02, 2022 2DBP-01 6239 DOLE ROAD 0.050 0.048 0.045 0.047
4Q2021 Nov 09, 2021 2DBP-01 6239 DOLE ROAD 0.048 0.057 0.041 0.051
3Q2021 Aug 09, 2021 2DBP-01 6239 DOLE ROAD 0.043 0.054 0.031 0.031
2Q2021 May 07, 2021 2DBP-01 6239 DOLE ROAD 0.033 0.032 0.028 0.033
1Q2021 Jan 04, 2021 2DBP-01 6239 DOLE ROAD 0.034 0.029 0.029 0.026
4Q2020 Nov 02, 2020 2DBP-01 6239 DOLE ROAD 0.033 0.037 0.030 0.029
3Q2020 Aug 10, 2020 2DBP-01 6239 DOLE ROAD 0.038 0.034 0.037 0.026
2Q2020 May 26, 2020 2DBP-01 6239 DOLE ROAD 0.045 0.038 0.038 0.043
1Q2020 Feb 21, 2020 2DBP-01 6239 DOLE ROAD 0.046 0.040 0.037 0.036
4Q2019 Nov 05, 2019 2DBP-01 6239 DOLE ROAD 0.048 0.055 0.038 0.044
3Q2019 Aug 12, 2019 2DBP-01 6239 DOLE ROAD 0.045 0.052 0.032 0.029
2Q2019 May 22, 2019 2DBP-01 6239 DOLE ROAD 0.042 0.039 0.031 0.035
1Q2019 Feb 10, 2019 2DBP-01 6239 DOLE ROAD 0.034 0.037 0.027 0.031
4Q2018 Nov 12, 2018 2DBP-01 6239 DOLE ROAD 0.033 0.038 0.026 0.028
3Q2018 Aug 19, 2018 2DBP-01 6239 DOLE ROAD 0.034 0.037 0.032 0.021
2Q2018 May 01, 2018 2DBP-01 6239 DOLE ROAD 0.038 0.024 0.037 0.032
1Q2018 Feb 11, 2018 2DBP-01 6239 DOLE ROAD 0.042 0.040 0.041 0.039
4Q2017 Nov 20, 2017 2DBP-01 6239 DOLE ROAD 0.042 0.048 0.041 0.050
3Q2017 Aug 15, 2017 2DBP-01 6239 DOLE ROAD 0.046 0.049 0.043 0.035
2Q2017 May 17, 2017 2DBP-01 6239 DOLE ROAD 0.046 0.036 0.039 0.043
1Q2017 Feb 07, 2017 2DBP-01 6239 DOLE ROAD 0.050 0.044 0.041 0.037
4Q2016 Nov 06, 2016 2DBP-01 6239 DOLE ROAD 0.053 0.059 0.042 0.051
3Q2016 Aug 08, 2016 2DBP-01 6239 DOLE ROAD 0.048 0.055 0.035 0.031
2Q2016 May 06, 2016 2DBP-01 6239 DOLE ROAD 0.047 0.043 0.039 0.040
1Q2016 Feb 12, 2016 2DBP-01 6239 DOLE ROAD 0.041 0.043 0.034 0.036
4Q2015 Nov 11, 2015 2DBP-01 6239 DOLE ROAD 0.043 0.044 0.036 0.035
3Q2015 Aug 07, 2015 2DBP-01 6239 DOLE ROAD 0.044 0.049 0.036 0.036
2Q2015 May 08, 2015 2DBP-01 6239 DOLE ROAD 0.028 0.034 0.026 0.032
1Q2015 Feb 09, 2015 2DBP-01 6239 DOLE ROAD 0.021 0.020
4Q2014 Nov 11, 2014 2DBP-01 6239 DOLE ROAD 0.011 0.010