OHA Drinking Water Services
OR41
PWS ID: 00594 ---- CLACKAMAS RIVER WATER - CLAIRMONT
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
4Q2024 Oct 21, 2024 2DBP-01 21760 S.YEOMAN ROAD 0.045 0.045 0.028 0.026
4Q2024 Oct 21, 2024 2DBP-02 14955 S. HOFFMAN ROAD 0.045 0.045 0.031 0.029
4Q2024 Oct 21, 2024 2DBP-03 15100 S. OYER ROAD 0.037 0.037 0.033 0.032
4Q2024 Oct 21, 2024 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.035 0.036 0.033 0.031
3Q2024 Jul 16, 2024 2DBP-01 21760 S.YEOMAN ROAD 0.049 0.044 0.033 0.030
3Q2024 Jul 16, 2024 2DBP-02 14955 S. HOFFMAN ROAD 0.050 0.045 0.033 0.033
3Q2024 Jul 16, 2024 2DBP-03 15100 S. OYER ROAD 0.042 0.039 0.037 0.032
3Q2024 Jul 16, 2024 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.041 0.036 0.036 0.033
2Q2024 Apr 24, 2024 2DBP-01 21760 S.YEOMAN ROAD 0.052 0.049 0.033 0.033
2Q2024 Apr 24, 2024 2DBP-02 14955 S. HOFFMAN ROAD 0.053 0.050 0.033 0.034
2Q2024 Apr 04, 2024 2DBP-03 15100 S. OYER ROAD 0.043 0.042 0.039 0.038
2Q2024 Apr 24, 2024 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.042 0.035 0.038 0.037
1Q2024 Jan 23, 2024 2DBP-01 21760 S.YEOMAN ROAD 0.052 0.052 0.037 0.034
1Q2024 Jan 23, 2024 2DBP-02 14955 S. HOFFMAN ROAD 0.052 0.053 0.033 0.033
1Q2024 Jan 23, 2024 2DBP-03 15100 S. OYER ROAD 0.042 0.042 0.038 0.040
1Q2024 Jan 23, 2024 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.047 0.047 0.037 0.038
4Q2023 Oct 24, 2023 2DBP-01 21760 S.YEOMAN ROAD 0.053 0.056 0.042 0.039
4Q2023 Oct 24, 2023 2DBP-02 14955 S. HOFFMAN ROAD 0.055 0.058 0.036 0.033
4Q2023 Oct 24, 2023 2DBP-03 15100 S. OYER ROAD 0.043 0.047 0.040 0.041
4Q2023 Oct 24, 2023 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.049 0.053 0.041 0.039
3Q2023 Jul 06, 2023 2DBP-01 21760 S.YEOMAN ROAD 0.046 0.052 0.037 0.039
3Q2023 Jul 06, 2023 2DBP-02 14955 S. HOFFMAN ROAD 0.049 0.053 0.034 0.035
3Q2023 Jul 06, 2023 2DBP-03 15100 S. OYER ROAD 0.038 0.040 0.036 0.038
3Q2023 Jul 06, 2023 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.043 0.046 0.038 0.041
2Q2023 Apr 18, 2023 2DBP-01 21760 S.YEOMAN ROAD 0.044 0.042 0.038 0.040
2Q2023 Apr 18, 2023 2DBP-02 14955 S. HOFFMAN ROAD 0.050 0.045 0.035 0.035
2Q2023 Apr 18, 2023 2DBP-03 15100 S. OYER ROAD 0.042 0.035 0.036 0.034
2Q2023 Apr 18, 2023 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.042 0.040 0.037 0.036
1Q2023 Jan 25, 2023 2DBP-01 21760 S.YEOMAN ROAD 0.045 0.045 0.037 0.040
1Q2023 Jan 25, 2023 2DBP-02 14955 S. HOFFMAN ROAD 0.053 0.053 0.039 0.038
1Q2023 Jan 25, 2023 2DBP-03 15100 S. OYER ROAD 0.044 0.043 0.040 0.039
1Q2023 Jan 25, 2023 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.044 0.045 0.041 0.042
4Q2022 Oct 18, 2022 2DBP-01 21760 S.YEOMAN ROAD 0.044 0.041 0.033 0.030
4Q2022 Oct 18, 2022 2DBP-02 14955 S. HOFFMAN ROAD 0.049 0.050 0.037 0.034
4Q2022 Oct 18, 2022 2DBP-03 15100 S. OYER ROAD 0.043 0.044 0.038 0.037
4Q2022 Oct 18, 2022 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.042 0.042 0.036 0.035
3Q2022 Jul 19, 2022 2DBP-01 21760 S.YEOMAN ROAD 0.050 0.047 0.034 0.036
3Q2022 Jul 19, 2022 2DBP-02 14955 S. HOFFMAN ROAD 0.054 0.054 0.037 0.039
3Q2022 Jul 19, 2022 2DBP-03 15100 S. OYER ROAD 0.047 0.049 0.039 0.040
3Q2022 Jul 19, 2022 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.047 0.044 0.038 0.039
2Q2022 Apr 12, 2022 2DBP-01 21760 S.YEOMAN ROAD 0.049 0.051 0.030 0.034
2Q2022 Apr 12, 2022 2DBP-02 14955 S. HOFFMAN ROAD 0.050 0.052 0.035 0.042
2Q2022 Apr 12, 2022 2DBP-03 15100 S. OYER ROAD 0.043 0.043 0.036 0.041
2Q2022 Apr 12, 2022 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.047 0.047 0.035 0.041
1Q2022 Jan 31, 2022 2DBP-01 21760 S.YEOMAN ROAD 0.047 0.047 0.028 0.029
1Q2022 Jan 31, 2022 2DBP-02 14955 S. HOFFMAN ROAD 0.047 0.046 0.030 0.032
1Q2022 Jan 31, 2022 2DBP-03 15100 S. OYER ROAD 0.041 0.040 0.033 0.033
1Q2022 Jan 31, 2022 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.046 0.045 0.032 0.032
4Q2021 Oct 11, 2021 2DBP-01 21760 S.YEOMAN ROAD 0.050 0.051 0.028 0.027
4Q2021 Oct 11, 2021 2DBP-02 14955 S. HOFFMAN ROAD 0.051 0.053 0.029 0.028
4Q2021 Oct 11, 2021 2DBP-03 15100 S. OYER ROAD 0.044 0.045 0.034 0.034
4Q2021 Oct 11, 2021 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.048 0.051 0.032 0.031
3Q2021 Jul 20, 2021 2DBP-01 21760 S.YEOMAN ROAD 0.052 0.046 0.029 0.026
3Q2021 Jul 20, 2021 2DBP-02 14955 S. HOFFMAN ROAD 0.053 0.047 0.030 0.029
3Q2021 Jul 20, 2021 2DBP-03 15100 S. OYER ROAD 0.046 0.042 0.034 0.031
3Q2021 Jul 20, 2021 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.050 0.045 0.034 0.030
2Q2021 Apr 13, 2021 2DBP-01 21760 S.YEOMAN ROAD 0.054 0.052 0.029 0.030
2Q2021 Apr 13, 2021 2DBP-02 14955 S. HOFFMAN ROAD 0.055 0.052 0.030 0.031
2Q2021 Apr 13, 2021 2DBP-03 15100 S. OYER ROAD 0.044 0.044 0.035 0.036
2Q2021 Apr 13, 2021 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.052 0.048 0.035 0.036
1Q2021 Jan 25, 2021 2DBP-01 21760 S.YEOMAN ROAD 0.055 0.057 0.031 0.031
1Q2021 Jan 25, 2021 2DBP-02 14955 S. HOFFMAN ROAD 0.055 0.058 0.032 0.031
1Q2021 Jan 25, 2021 2DBP-03 15100 S. OYER ROAD 0.044 0.045 0.036 0.035
1Q2021 Jan 25, 2021 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.052 0.054 0.038 0.036
4Q2020 Oct 26, 2020 2DBP-01 21760 S.YEOMAN ROAD 0.053 0.058 0.031 0.030
4Q2020 Oct 26, 2020 2DBP-02 14955 S. HOFFMAN ROAD 0.054 0.058 0.034 0.030
4Q2020 Oct 26, 2020 2DBP-03 15100 S. OYER ROAD 0.043 0.048 0.037 0.037
4Q2020 Oct 26, 2020 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.051 0.057 0.039 0.039
3Q2020 Jul 22, 2020 2DBP-01 21760 S.YEOMAN ROAD 0.052 0.051 0.029 0.029
3Q2020 Jul 22, 2020 2DBP-02 14955 S. HOFFMAN ROAD 0.051 0.052 0.035 0.033
3Q2020 Jul 22, 2020 2DBP-03 15100 S. OYER ROAD 0.039 0.037 0.035 0.034
3Q2020 Jul 22, 2020 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.046 0.048 0.039 0.036
2Q2020 Apr 14, 2020 2DBP-01 21760 S.YEOMAN ROAD 0.050 0.050 0.028 0.031
2Q2020 Apr 14, 2020 2DBP-02 14955 S. HOFFMAN ROAD 0.048 0.048 0.033 0.037
2Q2020 Apr 14, 2020 2DBP-03 15100 S. OYER ROAD 0.038 0.040 0.035 0.038
2Q2020 Apr 14, 2020 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.042 0.042 0.045 0.045
1Q2020 Jan 21, 2020 2DBP-01 21760 S.YEOMAN ROAD 0.049 0.050 0.028 0.029
1Q2020 Jan 21, 2020 2DBP-02 14955 S. HOFFMAN ROAD 0.049 0.049 0.033 0.035
1Q2020 Jan 21, 2020 2DBP-03 15100 S. OYER ROAD 0.039 0.038 0.035 0.035
1Q2020 Jan 21, 2020 2DBP-05 15626 SOUTH WILDFLOWER LANE 0.042 0.042 0.044 0.044
4Q2019 Oct 22, 2019 2DBP-01 21760 S.YEOMAN ROAD 0.051 0.052 0.028 0.025
4Q2019 Oct 22, 2019 2DBP-02 14955 S. HOFFMAN ROAD 0.050 0.050 0.033 0.031
4Q2019 Oct 22, 2019 2DBP-03 15100 S. OYER ROAD 0.039 0.041 0.036 0.033
4Q2019 Oct 22, 2019 2DBP-04 18262 S. ARNETT DRIVE 0.046 0.047 0.031 0.028
3Q2019 Jul 22, 2019 2DBP-01 21760 S.YEOMAN ROAD 0.046 0.048 0.028 0.027
3Q2019 Jul 22, 2019 2DBP-02 14955 S. HOFFMAN ROAD 0.046 0.048 0.031 0.030
3Q2019 Jul 22, 2019 2DBP-03 15100 S. OYER ROAD 0.036 0.036 0.036 0.034
3Q2019 Jul 22, 2019 2DBP-04 18262 S. ARNETT DRIVE 0.040 0.042 0.030 0.029
2Q2019 Apr 15, 2019 2DBP-01 21760 S.YEOMAN ROAD 0.048 0.045 0.028 0.031
2Q2019 Apr 15, 2019 2DBP-02 14955 S. HOFFMAN ROAD 0.046 0.046 0.032 0.035
2Q2019 Apr 15, 2019 2DBP-03 15100 S. OYER ROAD 0.038 0.037 0.035 0.039
2Q2019 Apr 15, 2019 2DBP-04 18262 S. ARNETT DRIVE 0.044 0.041 0.031 0.036
1Q2019 Jan 14, 2019 2DBP-01 21760 S.YEOMAN ROAD 0.051 0.051 0.028 0.029
1Q2019 Jan 14, 2019 2DBP-02 14955 S. HOFFMAN ROAD 0.049 0.048 0.032 0.033
1Q2019 Jan 14, 2019 2DBP-03 15100 S. OYER ROAD 0.039 0.037 0.034 0.036
1Q2019 Jan 14, 2019 2DBP-04 18262 S. ARNETT DRIVE 0.046 0.045 0.030 0.030
4Q2018 Oct 22, 2018 2DBP-01 21760 S.YEOMAN ROAD 0.047 0.046 0.030 0.025
4Q2018 Oct 22, 2018 2DBP-02 14955 S. HOFFMAN ROAD 0.046 0.044 0.033 0.027
4Q2018 Oct 22, 2018 2DBP-03 15100 S. OYER ROAD 0.038 0.037 0.034 0.032
4Q2018 Oct 22, 2018 2DBP-04 18262 S. ARNETT DRIVE 0.044 0.043 0.031 0.027
3Q2018 Jul 09, 2018 2DBP-01 21760 S.YEOMAN ROAD 0.050 0.051 0.031 0.029
3Q2018 Jul 09, 2018 2DBP-02 14955 S. HOFFMAN ROAD 0.050 0.048 0.035 0.032
3Q2018 Jul 09, 2018 2DBP-03 15100 S. OYER ROAD 0.040 0.040 0.036 0.032
3Q2018 Jul 09, 2018 2DBP-04 18262 S. ARNETT DRIVE 0.049 0.049 0.034 0.030
2Q2018 Apr 23, 2018 2DBP-01 21760 S.YEOMAN ROAD 0.044 0.049 0.033 0.034
2Q2018 Apr 23, 2018 2DBP-02 14955 S. HOFFMAN ROAD 0.048 0.052 0.035 0.039
2Q2018 Apr 23, 2018 2DBP-03 15100 S. OYER ROAD 0.037 0.041 0.037 0.039
2Q2018 Apr 23, 2018 2DBP-04 18262 S. ARNETT DRIVE 0.046 0.048 0.035 0.038
1Q2018 Jan 22, 2018 2DBP-01 21760 S.YEOMAN ROAD 0.041 0.041 0.038 0.035
1Q2018 Jan 22, 2018 2DBP-02 14955 S. HOFFMAN ROAD 0.043 0.045 0.041 0.037
1Q2018 Jan 22, 2018 2DBP-03 15100 S. OYER ROAD 0.033 0.034 0.040 0.039
1Q2018 Jan 22, 2018 2DBP-04 18262 S. ARNETT DRIVE 0.043 0.042 0.039 0.036
4Q2017 Oct 23, 2017 2DBP-01 21760 S.YEOMAN ROAD 0.038 0.044 0.037 0.035
4Q2017 Oct 23, 2017 2DBP-02 14955 S. HOFFMAN ROAD 0.041 0.046 0.039 0.037
4Q2017 Oct 23, 2017 2DBP-03 15100 S. OYER ROAD 0.031 0.035 0.038 0.040
4Q2017 Oct 23, 2017 2DBP-04 18262 S. ARNETT DRIVE 0.040 0.046 0.037 0.037
3Q2017 Jul 24, 2017 2DBP-01 21760 S.YEOMAN ROAD 0.037 0.033 0.036 0.036
3Q2017 Jul 24, 2017 2DBP-02 14955 S. HOFFMAN ROAD 0.039 0.038 0.038 0.038
3Q2017 Jul 24, 2017 2DBP-03 15100 S. OYER ROAD 0.032 0.028 0.038 0.034
3Q2017 Jul 24, 2017 2DBP-04 18262 S. ARNETT DRIVE 0.040 0.037 0.040 0.035
2Q2017 Apr 17, 2017 2DBP-01 21760 S.YEOMAN ROAD 0.035 0.038 0.036 0.043
2Q2017 Apr 17, 2017 2DBP-02 14955 S. HOFFMAN ROAD 0.038 0.038 0.039 0.047
2Q2017 Apr 17, 2017 2DBP-03 15100 S. OYER ROAD 0.032 0.032 0.039 0.044
2Q2017 Apr 17, 2017 2DBP-04 18262 S. ARNETT DRIVE 0.038 0.040 0.040 0.046
1Q2017 Jan 23, 2017 2DBP-01 21760 S.YEOMAN ROAD 0.035 0.033 0.037 0.031
1Q2017 Jan 23, 2017 2DBP-02 14955 S. HOFFMAN ROAD 0.039 0.036 0.038 0.034
1Q2017 Jan 23, 2017 2DBP-03 15100 S. OYER ROAD 0.032 0.030 0.040 0.035
1Q2017 Jan 23, 2017 2DBP-04 18262 S. ARNETT DRIVE 0.038 0.034 0.041 0.036
4Q2016 Oct 17, 2016 2DBP-01 21760 S.YEOMAN ROAD 0.038 0.040 0.039 0.035
4Q2016 Oct 17, 2016 2DBP-02 14955 S. HOFFMAN ROAD 0.041 0.043 0.039 0.035
4Q2016 Oct 17, 2016 2DBP-03 15100 S. OYER ROAD 0.035 0.038 0.042 0.042
4Q2016 Oct 17, 2016 2DBP-04 18262 S. ARNETT DRIVE 0.041 0.044 0.043 0.043
3Q2016 Jul 27, 2016 2DBP-01 21760 S.YEOMAN ROAD 0.036 0.033 0.037 0.038
3Q2016 Jul 27, 2016 2DBP-02 14955 S. HOFFMAN ROAD 0.039 0.038 0.038 0.039
3Q2016 Jul 24, 2016 2DBP-03 15100 S. OYER ROAD 0.033 0.032 0.038 0.039
3Q2016 Jul 27, 2016 2DBP-04 18262 S. ARNETT DRIVE 0.035 0.035 0.038 0.039
2Q2016 Apr 25, 2016 2DBP-01 21760 S.YEOMAN ROAD 0.037 0.039 0.036 0.046
2Q2016 Apr 25, 2016 2DBP-02 14955 S. HOFFMAN ROAD 0.042 0.041 0.036 0.045
2Q2016 Apr 25, 2016 2DBP-03 15100 S. OYER ROAD 0.033 0.033 0.037 0.043
2Q2016 Apr 25, 2016 2DBP-04 18262 S. ARNETT DRIVE 0.036 0.038 0.038 0.047
1Q2016 Jan 25, 2016 2DBP-01 21760 S.YEOMAN ROAD 0.037 0.036 0.030 0.032
1Q2016 Jan 25, 2016 2DBP-02 14955 S. HOFFMAN ROAD 0.041 0.041 0.032 0.034
1Q2016 Jan 25, 2016 2DBP-03 15100 S. OYER ROAD 0.032 0.033 0.035 0.034
1Q2016 Jan 25, 2016 2DBP-04 18262 S. ARNETT DRIVE 0.036 0.035 0.035 0.035
4Q2015 Oct 06, 2015 2DBP-01 21760 S.YEOMAN ROAD 0.039 0.037 0.030 0.025
4Q2015 Oct 06, 2015 2DBP-02 14955 S. HOFFMAN ROAD 0.044 0.042 0.033 0.027
4Q2015 Oct 06, 2015 2DBP-03 15100 S. OYER ROAD 0.034 0.033 0.034 0.031
4Q2015 Oct 06, 2015 2DBP-04 18262 S. ARNETT DRIVE 0.035 0.034 0.032 0.030
3Q2015 Jul 13, 2015 2DBP-01 21760 S.YEOMAN ROAD 0.039 0.037 0.029 0.030
3Q2015 Jul 13, 2015 2DBP-02 14955 S. HOFFMAN ROAD 0.043 0.046 0.034 0.032
3Q2015 Jul 13, 2015 2DBP-03 15100 S. OYER ROAD 0.033 0.034 0.034 0.034
3Q2015 Jul 13, 2015 2DBP-04 18262 S. ARNETT DRIVE 0.037 0.035 0.033 0.032
2Q2015 Apr 20, 2015 2DBP-01 21760 S.YEOMAN ROAD 0.037 0.041 0.030 0.033
2Q2015 Apr 20, 2015 2DBP-02 14955 S. HOFFMAN ROAD 0.038 0.042 0.034 0.039
2Q2015 Apr 20, 2015 2DBP-03 15100 S. OYER ROAD 0.031 0.033 0.033 0.038
2Q2015 Apr 20, 2015 2DBP-04 18262 S. ARNETT DRIVE 0.036 0.039 0.033 0.038
1Q2015 Jan 05, 2015 2DBP-01 21760 S.YEOMAN ROAD 0.038 0.039 0.032 0.031
1Q2015 Jan 05, 2015 2DBP-02 14955 S. HOFFMAN ROAD 0.039 0.040 0.036 0.036
1Q2015 Jan 05, 2015 2DBP-03 15100 S. OYER ROAD 0.033 0.032 0.032 0.031
1Q2015 Jan 05, 2015 2DBP-04 18262 S. ARNETT DRIVE 0.037 0.034 0.032 0.029
4Q2014 Oct 20, 2014 2DBP-01 21760 S.YEOMAN ROAD 0.036 0.036 0.030 0.027
4Q2014 Oct 20, 2014 2DBP-02 14955 S. HOFFMAN ROAD 0.037 0.036 0.034 0.031
4Q2014 Oct 20, 2014 2DBP-03 15100 S. OYER ROAD 0.033 0.032 0.030 0.030
4Q2014 Oct 20, 2014 2DBP-04 18262 S. ARNETT DRIVE 0.038 0.038 0.033 0.032
3Q2014 Jul 21, 2014 2DBP-01 21760 S.YEOMAN ROAD 0.040 0.033 0.033 0.030
3Q2014 Jul 21, 2014 2DBP-02 14955 S. HOFFMAN ROAD 0.042 0.034 0.037 0.032
3Q2014 Jul 21, 2014 2DBP-03 15100 S. OYER ROAD 0.036 0.030 0.033 0.029
3Q2014 Jul 21, 2014 2DBP-04 18262 S. ARNETT DRIVE 0.043 0.036 0.035 0.030
2Q2014 Apr 29, 2014 2DBP-01 21760 S.YEOMAN ROAD 0.033 0.044 0.028 0.040
2Q2014 Apr 29, 2014 2DBP-02 14955 S. HOFFMAN ROAD 0.036 0.047 0.031 0.043
2Q2014 Apr 29, 2014 2DBP-03 15100 S. OYER ROAD 0.030 0.040 0.027 0.037
2Q2014 Apr 29, 2014 2DBP-04 18262 S. ARNETT DRIVE 0.036 0.048 0.029 0.040
1Q2014 Jan 13, 2014 2DBP-01 21760 S.YEOMAN ROAD 0.023 0.017
1Q2014 Jan 13, 2014 2DBP-02 14955 S. HOFFMAN ROAD 0.024 0.020
1Q2014 Jan 13, 2014 2DBP-03 15100 S. OYER ROAD 0.019 0.017
1Q2014 Jan 31, 2014 2DBP-04 18262 S. ARNETT DRIVE 0.024 0.019
4Q2013 Oct 21, 2013 2DBP-01 21760 S.YEOMAN ROAD 0.013 0.009
4Q2013 Oct 21, 2013 2DBP-02 14955 S. HOFFMAN ROAD 0.014 0.010
4Q2013 Oct 21, 2013 2DBP-03 15100 S. OYER ROAD 0.011 0.009
4Q2013 Oct 21, 2013 2DBP-04 18262 S. ARNETT DRIVE 0.015 0.010



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