OHA Drinking Water Services
OR41
PWS ID: 00452 ---- LAFAYETTE, 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 Aug 05, 2024 2DBP-01 113 WASHINGTON ST 0.021 0.022 0.015 0.020
3Q2024 Aug 05, 2024 2DBP-02 1214 3RD ST 0.022 0.027 0.015 0.021
2Q2024 May 01, 2024 2DBP-01 113 WASHINGTON ST 0.040 0.016 0.022 0.010
2Q2024 May 01, 2024 2DBP-02 1214 3RD ST 0.022 0.015 0.012 0.009
1Q2024 Feb 01, 2024 2DBP-01 113 WASHINGTON ST 0.040 0.037 0.021 0.025
1Q2024 Feb 01, 2024 2DBP-02 1214 3RD ST 0.021 0.018 0.011 0.012
4Q2023 Nov 08, 2023 2DBP-01 113 WASHINGTON ST 0.042 0.048 0.023 0.024
4Q2023 Nov 08, 2023 2DBP-02 1214 3RD ST 0.024 0.027 0.013 0.013
3Q2023 Aug 02, 2023 2DBP-01 113 WASHINGTON ST 0.035 0.062 0.021 0.035
3Q2023 Aug 02, 2023 2DBP-02 1214 3RD ST 0.018 0.030 0.011 0.017
2Q2023 May 03, 2023 2DBP-01 113 WASHINGTON ST 0.014 0.010 0.014 0.008
2Q2023 May 03, 2023 2DBP-02 1214 3RD ST 0.011 0.010 0.010 0.007
1Q2023 Feb 08, 2023 2DBP-01 113 WASHINGTON ST 0.018 0.014 0.016 0.013
1Q2023 Feb 08, 2023 2DBP-02 1214 3RD ST 0.011 0.011 0.010 0.010
4Q2022 Oct 26, 2022 2DBP-01 113 WASHINGTON ST 0.035 0.017 0.024 0.015
4Q2022 Oct 26, 2022 2DBP-02 1214 3RD ST 0.031 0.009 0.019 0.007
3Q2022 Aug 03, 2022 2DBP-01 113 WASHINGTON ST 0.043 0.040 0.028 0.031
3Q2022 Aug 03, 2022 2DBP-02 1214 3RD ST 0.041 0.035 0.023 0.023
2Q2022 May 04, 2022 2DBP-01 113 WASHINGTON ST 0.057 0.042 0.033 0.025
2Q2022 May 04, 2022 2DBP-02 1214 3RD ST 0.051 0.040 0.025 0.020
1Q2022 Feb 02, 2022 2DBP-01 113 WASHINGTON ST 0.064 0.070 0.036 0.039
1Q2022 Feb 02, 2022 2DBP-02 1214 3RD ST 0.048 0.070 0.022 0.034
4Q2021 Nov 03, 2021 2DBP-01 113 WASHINGTON ST 0.057 0.054 0.034 0.030
4Q2021 Nov 03, 2021 2DBP-02 1214 3RD ST 0.025 0.036 0.011 0.016
3Q2021 Aug 25, 2021 2DBP-01 113 WASHINGTON ST 0.065 0.069 0.040 0.043
3Q2021 Aug 04, 2021 2DBP-02 1214 3RD ST 0.025 0.028 0.012 0.013
2Q2021 May 05, 2021 2DBP-01 113 WASHINGTON ST 0.058 0.058 0.036 0.035
2Q2021 May 05, 2021 2DBP-02 1214 3RD ST 0.014 0.011 0.011 0.008
1Q2021 Feb 03, 2021 2DBP-01 113 WASHINGTON ST 0.063 0.057 0.039 0.036
1Q2021 Feb 03, 2021 2DBP-02 1214 3RD ST 0.014 0.014 0.011 0.015
4Q2020 Nov 04, 2020 2DBP-01 113 WASHINGTON ST 0.050 0.067 0.031 0.041
4Q2020 Nov 04, 2020 2DBP-02 1214 3RD ST 0.014 0.024 0.011 0.017
3Q2020 Aug 10, 2020 2DBP-01 113 WASHINGTON ST 0.033 0.048 0.021 0.031
3Q2020 Aug 10, 2020 2DBP-02 1214 3RD ST 0.003 0.006 0.005 0.010
2Q2020 May 06, 2020 2DBP-01 113 WASHINGTON ST 0.019 0.037 0.011 0.022
2Q2020 May 06, 2020 2DBP-02 1214 3RD ST 0 0 0 0
1Q2020 Feb 05, 2020 2DBP-01 113 WASHINGTON ST 0.018 0 0.012 0
1Q2020 Feb 05, 2020 2DBP-02 1214 3RD ST 0.001 0 0 0
4Q2019 Nov 06, 2019 2DBP-01 113 WASHINGTON ST 0.039 0.024 0.022 0.016
4Q2019 Nov 06, 2019 2DBP-02 1214 3RD ST 0.023 0.001 0.009 0
3Q2019 Aug 07, 2019 2DBP-01 113 WASHINGTON ST 0.058 0.052 0.031 0.029
3Q2019 Aug 07, 2019 2DBP-02 1214 3RD ST 0.029 0.030 0.013 0.012
2Q2019 May 01, 2019 2DBP-01 113 WASHINGTON ST 0.082 0.076 0.039 0.043
2Q2019 May 01, 2019 2DBP-02 1214 3RD ST 0.051 0.029 0.020 0.017
1Q2019 Feb 06, 2019 2DBP-01 113 WASHINGTON ST 0.085 0.085 0.036 0.037
1Q2019 Feb 07, 2019 2DBP-02 1214 3RD ST 0.067 0.072 0.026 0.029
4Q2018 Nov 14, 2018 2DBP-01 113 WASHINGTON ST 0.081 0.084 0.033 0.035
4Q2018 Nov 14, 2018 2DBP-02 1214 3RD ST 0.061 0.045 0.023 0.019
3Q2018 Aug 08, 2018 2DBP-01 113 WASHINGTON ST 0.077 0.087 0.032 0.032
3Q2018 Aug 08, 2018 2DBP-02 1214 3RD ST 0.062 0.083 0.023 0.028
2Q2018 2DBP-01 113 WASHINGTON ST 0.067 0.031
2Q2018 2DBP-02 1214 3RD ST 0.048 0.021
1Q2018 Mar 28, 2018 2DBP-01 113 WASHINGTON ST 0.067 0.068 0.028 0.031
1Q2018 Mar 28, 2018 2DBP-02 1214 3RD ST 0.057 0.056 0.021 0.023
4Q2017 Dec 18, 2017 2DBP-01 113 WASHINGTON ST 0.067 0.066 0.031 0.029
4Q2017 Dec 18, 2017 2DBP-02 1214 3RD ST 0.059 0.042 0.024 0.016
3Q2017 2DBP-01 113 WASHINGTON ST 0.072 0.033
3Q2017 2DBP-02 1214 3RD ST 0.076 0.030
2Q2017 May 24, 2017 2DBP-01 113 WASHINGTON ST 0.073 0.071 0.030 0.030
2Q2017 May 24, 2017 2DBP-02 1214 3RD ST 0.074 0.076 0.027 0.026
1Q2017 Feb 28, 2017 2DBP-01 113 WASHINGTON ST 0.074 0.072 0.033 0.035
1Q2017 Feb 28, 2017 2DBP-02 1214 3RD ST 0.071 0.074 0.029 0.033
4Q2016 Nov 23, 2016 2DBP-01 113 WASHINGTON ST 0.072 0.078 0.030 0.032
4Q2016 2DBP-02 1214 3RD ST 0.065 0.027
3Q2016 Aug 31, 2016 2DBP-01 113 WASHINGTON ST 0.068 0.070 0.026 0.026
3Q2016 Aug 31, 2016 2DBP-02 1214 3RD ST 0.063 0.066 0.024 0.025
2Q2016 May 31, 2016 2DBP-01 113 WASHINGTON ST 0.073 0.068 0.026 0.028
2Q2016 May 31, 2016 2DBP-02 1214 3RD ST 0.066 0.062 0.023 0.026
1Q2016 Feb 11, 2016 2DBP-01 113 WASHINGTON ST 0.077 0.069 0.028 0.026
1Q2016 Feb 11, 2016 2DBP-02 1214 3RD ST 0.071 0.063 0.023 0.024
4Q2015 Nov 18, 2015 2DBP-01 113 WASHINGTON ST 0.082 0.079 0.028 0.025
4Q2015 Nov 18, 2015 2DBP-02 1214 3RD ST 0.076 0.071 0.023 0.020
3Q2015 Aug 06, 2015 2DBP-01 113 WASHINGTON ST 0.084 0.090 0.030 0.029
3Q2015 Aug 06, 2015 2DBP-02 1214 3RD ST 0.078 0.082 0.024 0.022
2Q2015 May 07, 2015 2DBP-01 113 WASHINGTON ST 0.083 0.082 0.030 0.034
2Q2015 May 07, 2015 2DBP-02 1214 3RD ST 0.071 0.079 0.025 0.027
1Q2015 Feb 04, 2015 2DBP-01 113 WASHINGTON ST 0.085 0.080 0.027 0.028
1Q2015 Feb 04, 2015 2DBP-02 1214 3RD ST 0.068 0.069 0.023 0.025
4Q2014 Nov 25, 2014 2DBP-01 113 WASHINGTON ST 0.091 0.083 0.026 0.026
4Q2014 Nov 25, 2014 2DBP-02 1214 3RD ST 0.060 0.063 0.019 0.021
3Q2014 Aug 13, 2014 2DBP-01 113 WASHINGTON ST 0.095 0.096 0.025 0.025
3Q2014 Aug 13, 2014 2DBP-02 1214 3RD ST 0.067 0.058 0.017 0.017
2Q2014 May 21, 2014 2DBP-01 113 WASHINGTON ST 0.072 0.097 0.018 0.026
2Q2014 May 21, 2014 2DBP-02 1214 3RD ST 0.053 0.071 0.012 0.018
1Q2014 Feb 26, 2014 2DBP-01 113 WASHINGTON ST 0.048 0.009
1Q2014 Feb 26, 2014 2DBP-02 1214 3RD ST 0.035 0.005
4Q2013 Nov 25, 2013 2DBP-01 113 WASHINGTON ST 0.022
4Q2013 Nov 25, 2013 2DBP-02 1214 3RD ST 0.022



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