OHA Drinking Water Services
OR41
PWS ID: 00055 ---- ASTORIA, 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 07, 2024 2DBP-01 MERTS 0.039 0.031 0.033 0.028
3Q2024 Aug 07, 2024 2DBP-02 1ST AND D 0.047 0.043 0.044 0.033
3Q2024 Aug 07, 2024 2DBP-03 RESERVOIR 2 OUTFLOW 0.045 0.041 0.045 0.035
3Q2024 Aug 07, 2024 2DBP-04 PORTWAY AND INDUSTRY 0.046 0.041 0.045 0.036
2Q2024 May 01, 2024 2DBP-01 MERTS 0.044 0.039 0.031 0.035
2Q2024 May 01, 2024 2DBP-02 1ST AND D 0.046 0.044 0.043 0.043
2Q2024 May 01, 2024 2DBP-03 RESERVOIR 2 OUTFLOW 0.045 0.041 0.043 0.043
2Q2024 May 01, 2024 2DBP-04 PORTWAY AND INDUSTRY 0.046 0.043 0.043 0.043
1Q2024 Feb 07, 2024 2DBP-01 MERTS 0.041 0.039 0.025 0.025
1Q2024 Feb 07, 2024 2DBP-02 1ST AND D 0.042 0.042 0.038 0.040
1Q2024 Feb 07, 2024 2DBP-03 RESERVOIR 2 OUTFLOW 0.041 0.042 0.038 0.040
1Q2024 Feb 07, 2024 2DBP-04 PORTWAY AND INDUSTRY 0.043 0.043 0.038 0.039
4Q2023 Nov 01, 2023 2DBP-01 MERTS 0.046 0.054 0.029 0.034
4Q2023 Nov 01, 2023 2DBP-02 1ST AND D 0.045 0.053 0.042 0.052
4Q2023 Nov 01, 2023 2DBP-03 RESERVOIR 2 OUTFLOW 0.044 0.052 0.041 0.053
4Q2023 Nov 01, 2023 2DBP-04 PORTWAY AND INDUSTRY 0.045 0.054 0.042 0.052
3Q2023 Aug 09, 2023 2DBP-01 MERTS 0.041 0.042 0.028 0.023
3Q2023 Aug 09, 2023 2DBP-02 1ST AND D 0.040 0.039 0.035 0.031
3Q2023 Aug 09, 2023 2DBP-03 RESERVOIR 2 OUTFLOW 0.038 0.039 0.034 0.029
3Q2023 Aug 09, 2023 2DBP-04 PORTWAY AND INDUSTRY 0.040 0.040 0.035 0.031
2Q2023 May 03, 2023 2DBP-01 MERTS 0.036 0.034 0.028 0.025
2Q2023 May 03, 2023 2DBP-02 1ST AND D 0.035 0.034 0.032 0.030
2Q2023 May 03, 2023 2DBP-03 RESERVOIR 2 OUTFLOW 0.033 0.032 0.031 0.029
2Q2023 May 03, 2023 2DBP-04 PORTWAY AND INDUSTRY 0.035 0.033 0.033 0.030
1Q2023 Feb 01, 2023 2DBP-01 MERTS 0.039 0.039 0.032 0.032
1Q2023 Feb 01, 2023 2DBP-02 1ST AND D 0.038 0.038 0.036 0.037
1Q2023 Feb 01, 2023 2DBP-03 RESERVOIR 2 OUTFLOW 0.036 0.036 0.035 0.036
1Q2023 Feb 01, 2023 2DBP-04 PORTWAY AND INDUSTRY 0.038 0.038 0.036 0.038
4Q2022 Nov 01, 2022 2DBP-01 MERTS 0.038 0.043 0.033 0.036
4Q2022 Nov 01, 2022 2DBP-02 1ST AND D 0.039 0.042 0.036 0.039
4Q2022 Nov 01, 2022 2DBP-03 RESERVOIR 2 OUTFLOW 0.036 0.039 0.036 0.040
4Q2022 Nov 01, 2022 2DBP-04 PORTWAY AND INDUSTRY 0.038 0.040 0.036 0.040
3Q2022 Aug 02, 2022 2DBP-01 MERTS 0.045 0.034 0.041 0.028
3Q2022 Aug 02, 2022 2DBP-02 1ST AND D 0.045 0.034 0.049 0.030
3Q2022 Aug 02, 2022 2DBP-03 RESERVOIR 2 OUTFLOW 0.031 0.030 0.028 0.027
3Q2022 Aug 02, 2022 2DBP-04 PORTWAY AND INDUSTRY 0.032 0.031 0.028 0.027
2Q2022 May 04, 2022 2DBP-01 MERTS 0.051 0.046 0.041 0.043
2Q2022 May 04, 2022 2DBP-02 1ST AND D 0.052 0.047 0.050 0.051
2Q2022 May 04, 2022 2DBP-03 RESERVOIR 2 OUTFLOW 0.034 0.034 0.031 0.031
2Q2022 May 04, 2022 2DBP-04 PORTWAY AND INDUSTRY 0.036 0.036 0.032 0.032
1Q2022 Feb 02, 2022 2DBP-01 MERTS 0.050 0.050 0.038 0.041
1Q2022 Feb 02, 2022 2DBP-02 1ST AND D 0.050 0.052 0.047 0.051
4Q2021 Nov 10, 2021 2DBP-01 MERTS 0.052 0.061 0.038 0.048
4Q2021 Nov 29, 2021 2DBP-02 1ST AND D 0.052 0.059 0.048 0.063
3Q2021 Aug 04, 2021 2DBP-01 MERTS 0.051 0.048 0.031 0.025
3Q2021 Aug 04, 2021 2DBP-02 1ST AND D 0.050 0.047 0.036 0.031
2Q2021 May 05, 2021 2DBP-01 MERTS 0.050 0.044 0.032 0.029
2Q2021 May 05, 2021 2DBP-02 1ST AND D 0.048 0.043 0.037 0.032
1Q2021 Feb 03, 2021 2DBP-01 MERTS 0.052 0.053 0.034 0.035
1Q2021 Feb 03, 2021 2DBP-02 1ST AND D 0.050 0.053 0.039 0.042
4Q2020 Nov 04, 2020 2DBP-01 MERTS 0.055 0.058 0.040 0.037
4Q2020 Nov 04, 2020 2DBP-02 1ST AND D 0.052 0.054 0.048 0.043
3Q2020 Aug 05, 2020 2DBP-01 MERTS 0.055 0.052 0.040 0.036
3Q2020 Aug 05, 2020 2DBP-02 1ST AND D 0.051 0.048 0.048 0.043
2Q2020 May 06, 2020 2DBP-01 MERTS 0.056 0.050 0.041 0.039
2Q2020 May 06, 2020 2DBP-02 1ST AND D 0.055 0.048 0.049 0.046
1Q2020 Feb 28, 2020 2DBP-01 MERTS 0.060 0.061 0.043 0.048
1Q2020 Feb 28, 2020 2DBP-02 1ST AND D 0.057 0.061 0.051 0.061
4Q2019 Nov 13, 2019 2DBP-01 MERTS 0.054 0.062 0.038 0.040
4Q2019 Nov 25, 2019 2DBP-02 1ST AND D 0.052 0.058 0.043 0.047
3Q2019 Aug 07, 2019 2DBP-01 MERTS 0.050 0.053 0.041 0.036
3Q2019 Aug 07, 2019 2DBP-02 1ST AND D 0.051 0.053 0.047 0.039
2Q2019 May 15, 2019 2DBP-01 MERTS 0.045 0.046 0.040 0.041
2Q2019 May 15, 2019 2DBP-02 1ST AND D 0.048 0.046 0.043 0.045
1Q2019 Feb 06, 2019 2DBP-01 MERTS 0.041 0.041 0.037 0.041
1Q2019 Feb 06, 2019 2DBP-02 1ST AND D 0.046 0.046 0.041 0.045
4Q2018 Nov 21, 2018 2DBP-01 MERTS 0.039 0.045 0.034 0.042
4Q2018 Nov 21, 2018 2DBP-02 1ST AND D 0.043 0.051 0.037 0.048
3Q2018 Aug 01, 2018 2DBP-01 MERTS 0.042 0.039 0.036 0.028
3Q2018 Aug 01, 2018 2DBP-02 1ST AND D 0.043 0.041 0.036 0.027
2Q2018 May 16, 2018 2DBP-01 MERTS 0.038 0.038 0.036 0.033
2Q2018 May 16, 2018 2DBP-02 1ST AND D 0.039 0.040 0.036 0.035
1Q2018 Feb 07, 2018 2DBP-01 MERTS 0.036 0.037 0.036 0.037
1Q2018 Feb 07, 2018 2DBP-02 1ST AND D 0.037 0.037 0.036 0.037
4Q2017 Nov 15, 2017 2DBP-01 MERTS 0.038 0.044 0.040 0.045
4Q2017 Nov 15, 2017 2DBP-02 1ST AND D 0.039 0.045 0.036 0.045
3Q2017 Aug 02, 2017 2DBP-01 MERTS 0.043 0.031 0.049 0.031
3Q2017 Aug 02, 2017 2DBP-02 1ST AND D 0.046 0.033 0.048 0.028
2Q2017 May 10, 2017 2DBP-01 MERTS 0.050 0.041 0.054 0.047
2Q2017 May 10, 2017 2DBP-02 1ST AND D 0.052 0.043 0.053 0.046
1Q2017 Feb 01, 2017 2DBP-01 MERTS 0.052 0.052 0.058 0.059
1Q2017 Feb 16, 2017 2DBP-02 1ST AND D 0.056 0.054 0.059 0.056
4Q2016 Nov 16, 2016 2DBP-01 MERTS 0.053 0.065 0.058 0.072
4Q2016 Nov 16, 2016 2DBP-02 1ST AND D 0.056 0.069 0.062 0.079
3Q2016 Aug 03, 2016 2DBP-01 MERTS 0.044 0.047 0.050 0.044
3Q2016 Aug 03, 2016 2DBP-02 1ST AND D 0.048 0.048 0.052 0.047
2Q2016 May 18, 2016 2DBP-01 MERTS 0.042 0.038 0.047 0.047
2Q2016 May 18, 2016 2DBP-02 1ST AND D 0.047 0.044 0.048 0.050
1Q2016 Feb 03, 2016 2DBP-01 MERTS 0.045 0.042 0.053 0.049
1Q2016 Feb 03, 2016 2DBP-02 1ST AND D 0.048 0.046 0.051 0.049
4Q2015 Nov 18, 2015 2DBP-01 MERTS 0.046 0.049 0.053 0.060
4Q2015 Nov 18, 2015 2DBP-02 1ST AND D 0.049 0.052 0.051 0.056
3Q2015 Aug 05, 2015 2DBP-01 MERTS 0.050 0.046 0.052 0.046
3Q2015 Aug 05, 2015 2DBP-02 1ST AND D 0.053 0.049 0.051 0.043
2Q2015 May 20, 2015 2DBP-01 MERTS 0.050 0.049 0.052 0.057
2Q2015 May 20, 2015 2DBP-02 1ST AND D 0.052 0.051 0.053 0.056
1Q2015 Feb 03, 2015 2DBP-01 MERTS 0.053 0.048 0.056 0.048
1Q2015 Feb 03, 2015 2DBP-02 1ST AND D 0.057 0.051 0.057 0.051
4Q2014 Nov 05, 2014 2DBP-01 MERTS 0.050 0.059 0.053 0.061
4Q2014 Nov 05, 2014 2DBP-02 1ST AND D 0.054 0.063 0.055 0.062
3Q2014 Aug 06, 2014 2DBP-01 MERTS 0.050 0.047 0.052 0.048
3Q2014 Aug 06, 2014 2DBP-02 1ST AND D 0.051 0.049 0.054 0.049
2Q2014 May 07, 2014 2DBP-01 MERTS 0.037 0.052 0.042 0.060
2Q2014 May 07, 2014 2DBP-02 1ST AND D 0.038 0.054 0.043 0.061
1Q2014 Feb 05, 2014 2DBP-01 MERTS 0.022 0.023
1Q2014 Feb 05, 2014 2DBP-02 1ST AND D 0.022 0.025
4Q2013 Nov 06, 2013 2DBP-01 MERTS 0.015 0.015
4Q2013 Nov 06, 2013 2DBP-02 1ST AND D 0.015 0.016
3Q2013 2DBP-01 MERTS
3Q2013 2DBP-02 1ST AND D
2Q2013 2DBP-01 MERTS
2Q2013 2DBP-02 1ST AND D
1Q2013 2DBP-01 MERTS
1Q2013 2DBP-02 1ST AND D
4Q2012 2DBP-01 MERTS
4Q2012 2DBP-02 1ST AND D
3Q2012 2DBP-01 MERTS
3Q2012 2DBP-02 1ST AND D
2Q2012 2DBP-01 MERTS
2Q2012 2DBP-02 1ST AND D



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