OHA Drinking Water Services
OR41
PWS ID: 00540 ---- MONROE, 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
3Q2024 2DBP-01 575 S 5TH (TTHM) 0.055 0.014
3Q2024 2DBP-02 575 N 8TH (HAA5) 0.052 0.022
2Q2024 2DBP-01 575 S 5TH (TTHM) 0.055 0.011
2Q2024 2DBP-02 575 N 8TH (HAA5) 0.053 0.020
1Q2024 Mar 06, 2024 2DBP-01 575 S 5TH (TTHM) 0.056 0.055 0.018 0.011
1Q2024 Mar 06, 2024 2DBP-02 575 N 8TH (HAA5) 0.063 0.053 0.024 0.019
4Q2023 Dec 20, 2023 2DBP-01 575 S 5TH (TTHM) 0.058 0.055 0.018 0.020
4Q2023 Dec 20, 2023 2DBP-02 575 N 8TH (HAA5) 0.063 0.061 0.024 0.028
3Q2023 Sep 27, 2023 2DBP-01 575 S 5TH (TTHM) 0.058 0.059 0.018 0.015
3Q2023 Sep 26, 2023 2DBP-02 575 N 8TH (HAA5) 0.064 0.064 0.023 0.021
2Q2023 Jun 09, 2023 2DBP-01 575 S 5TH (TTHM) 0.067 0.059 0.021 0.026
2Q2023 Jun 09, 2023 2DBP-02 575 N 8TH (HAA5) 0.073 0.073 0.031 0.030
1Q2023 Mar 09, 2023 2DBP-01 575 S 5TH (TTHM) 0.077 0.068 0.029 0.014
1Q2023 Mar 09, 2023 2DBP-02 575 N 8TH (HAA5) 0.065 0.064 0.047 0.025
4Q2022 Nov 21, 2022 2DBP-01 575 S 5TH (TTHM) 0.076 0.074 0.045 0.032
4Q2022 Nov 21, 2022 2DBP-02 575 N 8TH (HAA5) 0.066 0.064 0.061 0.050
3Q2022 Aug 01, 2022 2DBP-01 575 S 5TH (TTHM) 0.088 0.086 0.045 0.044
3Q2022 Aug 01, 2022 2DBP-02 575 N 8TH (HAA5) 0.078 0.076 0.070 0.065
2Q2022 Jun 06, 2022 2DBP-01 575 S 5TH (TTHM) 0.092 0.089 0.043 0.059
2Q2022 Jun 06, 2022 2DBP-02 575 N 8TH (HAA5) 0.083 0.071 0.070 0.086
1Q2022 Mar 15, 2022 2DBP-01 575 S 5TH (TTHM) 0.099 0.083 0.034 0.044
1Q2022 Mar 15, 2022 2DBP-02 575 N 8TH (HAA5) 0.095 0.083 0.057 0.062
4Q2021 Dec 23, 2021 2DBP-01 575 S 5TH (TTHM) 0.101 0.108 0.029 0.020
4Q2021 Dec 23, 2021 2DBP-02 575 N 8TH (HAA5) 0.096 0.105 0.057 0.054
3Q2021 Sep 24, 2021 2DBP-01 575 S 5TH (TTHM) 0.096 0.102 0.040 0.027
3Q2021 Sep 24, 2021 2DBP-02 575 N 8TH (HAA5) 0.090 0.099 0.057 0.053
2Q2021 Jun 25, 2021 2DBP-01 575 S 5TH (TTHM) 0.102 0.100 0.049 0.046
2Q2021 Jun 25, 2021 2DBP-02 575 N 8TH (HAA5) 0.095 0.090 0.066 0.058
1Q2021 Mar 25, 2021 2DBP-01 575 S 5TH (TTHM) 0.099 0.088 0.049 0.054
1Q2021 Mar 25, 2021 2DBP-02 575 N 8TH (HAA5) 0.093 0.084 0.065 0.071
4Q2020 Dec 15, 2020 2DBP-01 575 S 5TH (TTHM) 0.097 0.102 0.052 0.051
4Q2020 Dec 15, 2020 2DBP-02 575 N 8TH (HAA5) 0.094 0.097 0.063 0.062
3Q2020 Sep 25, 2020 2DBP-01 575 S 5TH (TTHM) 0.097 0.109 0.048 0.049
3Q2020 Sep 25, 2020 2DBP-02 575 N 8TH (HAA5) 0.094 0.107 0.059 0.069
2Q2020 Jun 17, 2020 2DBP-01 575 S 5TH (TTHM) 0.097 0.093 0.049 0.045
2Q2020 Jun 17, 2020 2DBP-02 575 N 8TH (HAA5) 0.083 0.087 0.058 0.051
1Q2020 Feb 26, 2020 2DBP-01 575 S 5TH (TTHM) 0.089 0.085 0.028 0.0589
1Q2020 Feb 26, 2020 2DBP-02 575 N 8TH (HAA5) 0.037 0.0710 0.057 0.062
4Q2019 Nov 14, 2019 2DBP-01 575 S 5TH (TTHM) 0.086 0.094 0.045 0.045
4Q2019 Nov 14, 2019 2DBP-02 575 N 8TH (HAA5) 0.081 0.081 0.055 0.051
3Q2019 Sep 05, 2019 2DBP-01 575 S 5TH (TTHM) 0.081 0.098
3Q2019 Sep 05, 2019 2DBP-02 575 N 8TH (HAA5) 0.053 0.063
2Q2019 Jun 12, 2019 2DBP-01 575 S 5TH (TTHM) 0.066 0.068
2Q2019 Jun 12, 2019 2DBP-02 575 N 8TH (HAA5) 0.046 0.046
1Q2019 Feb 21, 2019 2DBP-01 575 S 5TH (TTHM) 0.054 0.059
1Q2019 Feb 21, 2019 2DBP-02 575 N 8TH (HAA5) 0.042 0.050
4Q2018 Dec 28, 2018 2DBP-01 575 S 5TH (TTHM) 0.045 0.057
4Q2018 Dec 28, 2018 2DBP-02 575 N 8TH (HAA5) 0.034 0.036
3Q2018 Aug 07, 2018 2DBP-01 575 S 5TH (TTHM) 0.035 0.047
3Q2018 Aug 07, 2018 2DBP-02 575 N 8TH (HAA5) 0.033 0.035
2Q2018 May 29, 2018 2DBP-01 575 S 5TH (TTHM) 0.027 0.025
2Q2018 May 29, 2018 2DBP-02 575 N 8TH (HAA5) 0.030 0.029
1Q2018 Feb 27, 2018 2DBP-01 575 S 5TH (TTHM) 0.027 0.021
1Q2018 Feb 27, 2018 2DBP-02 575 N 8TH (HAA5) 0.028 0.030
4Q2017 Nov 21, 2017 2DBP-01 575 S 5TH (TTHM) 0.028 0.029
4Q2017 Nov 21, 2017 2DBP-02 575 N 8TH (HAA5) 0.028 0.030
3Q2017 Aug 31, 2017 2DBP-01 575 S 5TH (TTHM) 0.039 0.033
3Q2017 Aug 31, 2017 2DBP-02 575 N 8TH (HAA5) 0.033 0.028
2Q2017 May 08, 2017 2DBP-01 575 S 5TH (TTHM) 0.038 0.036
2Q2017 May 08, 2017 2DBP-02 575 N 8TH (HAA5) 0.033 0.030
1Q2017 Feb 16, 2017 2DBP-01 575 S 5TH (TTHM) 0.033 0.034
1Q2017 Feb 16, 2017 2DBP-02 575 N 8TH (HAA5) 0.034 0.034
4Q2016 Nov 08, 2016 2DBP-01 575 S 5TH (TTHM) 0.037 0.045
4Q2016 Nov 08, 2016 2DBP-02 575 N 8TH (HAA5) 0.046 0.040
3Q2016 Aug 24, 2016 2DBP-01 575 S 5TH (TTHM) 0.030 0.030
3Q2016 Aug 24, 2016 2DBP-02 575 N 8TH (HAA5) 0.043 0.042
2Q2016 May 10, 2016 2DBP-01 575 S 5TH (TTHM) 0.041 0.023
2Q2016 May 10, 2016 2DBP-02 575 N 8TH (HAA5) 0.043 0.041
1Q2016 Feb 10, 2016 2DBP-01 575 S 5TH (TTHM) 0.057 0.046
1Q2016 Feb 10, 2016 2DBP-02 575 N 8TH (HAA5) 0.046 0.055
4Q2015 Nov 18, 2015 2DBP-01 575 S 5TH (TTHM) 0.065 0.059
4Q2015 Nov 18, 2015 2DBP-02 575 N 8TH (HAA5) 0.040 0.037
3Q2015 Aug 12, 2015 2DBP-01 575 S 5TH (TTHM) 0.076 0.077
3Q2015 Aug 12, 2015 2DBP-02 575 N 8TH (HAA5) 0.041 0.039
2Q2015 May 13, 2015 2DBP-01 575 S 5TH (TTHM) 0.055 0.074
2Q2015 May 13, 2015 2DBP-02 575 N 8TH (HAA5) 0.032 0.042
1Q2015 Feb 11, 2015 2DBP-01 575 S 5TH (TTHM) 0.037
1Q2015 Feb 11, 2015 2DBP-02 575 N 8TH (HAA5) 0.022
4Q2014 Nov 12, 2014 2DBP-01 575 S 5TH (TTHM) 0.020
4Q2014 Nov 12, 2014 2DBP-02 575 N 8TH (HAA5) 0.011



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