OHA Drinking Water Services
OR41
PWS ID: 00218 ---- CORNELIUS, 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
4Q2024 2DBP-01 805 N 4TH AVE
4Q2024 Oct 22, 2024 2DBP-02 500 SW 345TH AVE 0.036 0.039 0.022 0.020
4Q2024 Oct 22, 2024 2DBP-04 #2 RESERVOIR 0.039 0.035 0.027 0.018
3Q2024 2DBP-01 805 N 4TH AVE
3Q2024 Aug 14, 2024 2DBP-02 500 SW 345TH AVE 0.040 0.034 0.026 0.021
3Q2024 Aug 14, 2024 2DBP-04 #2 RESERVOIR 0.050 0.042 0.032 0.031
2Q2024 2DBP-01 805 N 4TH AVE
2Q2024 May 28, 2024 2DBP-02 500 SW 345TH AVE 0.040 0.039 0.026 0.026
2Q2024 May 28, 2024 2DBP-04 #2 RESERVOIR 0.046 0.055 0.028 0.036
1Q2024 2DBP-01 805 N 4TH AVE
1Q2024 Feb 20, 2024 2DBP-02 500 SW 345TH AVE 0.042 0.040 0.029 0.028
1Q2024 Feb 20, 2024 2DBP-04 #2 RESERVOIR 0.042 0.041 0.028 0.029
4Q2023 2DBP-01 805 N 4TH AVE
4Q2023 Nov 14, 2023 2DBP-02 500 SW 345TH AVE 0.041 0.049 0.028 0.032
4Q2023 Nov 14, 2023 2DBP-04 #2 RESERVOIR 0.041 0.049 0.025 0.025
3Q2023 2DBP-01 805 N 4TH AVE
3Q2023 Aug 08, 2023 2DBP-02 500 SW 345TH AVE 0.038 0.035 0.027 0.023
3Q2023 Aug 08, 2023 2DBP-04 #2 RESERVOIR 0.041 0.029 0.020 0.019
2Q2023 2DBP-01 805 N 4TH AVE
2Q2023 May 16, 2023 2DBP-02 500 SW 345TH AVE 0.039 0.040 0.030 0.030
2Q2023 May 16, 2023 2DBP-04 #2 RESERVOIR 0.048 0.047 0.024 0.028
1Q2023 2DBP-01 805 N 4TH AVE
1Q2023 Mar 07, 2023 2DBP-02 500 SW 345TH AVE 0.039 0.034 0.029 0.028
1Q2023 Mar 07, 2023 2DBP-04 #2 RESERVOIR 0.043 0.044 0.021 0.020
4Q2022 2DBP-01 805 N 4TH AVE
4Q2022 Nov 08, 2022 2DBP-02 500 SW 345TH AVE 0.038 0.047 0.026 0.033
4Q2022 Nov 08, 2022 2DBP-04 #2 RESERVOIR 0.040 0.054 0.019 0.014
3Q2022 2DBP-01 805 N 4TH AVE
3Q2022 2DBP-02 500 SW 345TH AVE 0.043 0.026
3Q2022 2DBP-04 #2 RESERVOIR 0.045 0.026
2Q2022 2DBP-01 805 N 4TH AVE
2Q2022 May 10, 2022 2DBP-02 500 SW 345TH AVE 0.041 0.042 0.023 0.026
2Q2022 May 10, 2022 2DBP-04 #2 RESERVOIR 0.042 0.041 0.021 0.026
1Q2022 2DBP-01 805 N 4TH AVE
1Q2022 Feb 08, 2022 2DBP-02 500 SW 345TH AVE 0.039 0.037 0.021 0.021
1Q2022 Feb 08, 2022 2DBP-04 #2 RESERVOIR 0.050 0.042 0.018 0.020
4Q2021 2DBP-01 805 N 4TH AVE
4Q2021 Nov 03, 2021 2DBP-02 500 SW 345TH AVE 0.041 0.049 0.022 0.026
4Q2021 Nov 03, 2021 2DBP-04 #2 RESERVOIR 0.053 0.064 0.015 0.020
3Q2021 2DBP-01 805 N 4TH AVE
3Q2021 Aug 04, 2021 2DBP-02 500 SW 345TH AVE 0.038 0.034 0.021 0.017
3Q2021 Aug 04, 2021 2DBP-04 #2 RESERVOIR 0.045 0.042 0.011 0.009
2Q2021 2DBP-01 805 N 4TH AVE
2Q2021 May 11, 2021 2DBP-02 500 SW 345TH AVE 0.039 0.038 0.022 0.020
2Q2021 May 11, 2021 2DBP-04 #2 RESERVOIR 0.051 0.051 0.012 0.014
1Q2021 2DBP-01 805 N 4TH AVE
1Q2021 Feb 09, 2021 2DBP-02 500 SW 345TH AVE 0.042 0.039 0.025 0.023
1Q2021 Feb 09, 2021 2DBP-04 #2 RESERVOIR 0.054 0.046 0.016 0.010
4Q2020 2DBP-01 805 N 4TH AVE
4Q2020 Nov 12, 2020 2DBP-02 500 SW 345TH AVE 0.041 0.047 0.025 0.027
4Q2020 Nov 10, 2020 2DBP-04 #2 RESERVOIR 0.055 0.056 0.019 0.018
3Q2020 2DBP-01 805 N 4TH AVE
3Q2020 Aug 11, 2020 2DBP-02 500 SW 345TH AVE 0.039 0.037 0.023 0.023
3Q2020 Aug 11, 2020 2DBP-04 #2 RESERVOIR 0.059 0.058 0.021 0.019
2Q2020 2DBP-01 805 N 4TH AVE
2Q2020 May 29, 2020 2DBP-02 500 SW 345TH AVE 0.037 0.041 0.021 0.025
2Q2020 May 29, 2020 2DBP-04 #2 RESERVOIR 0.059 0.061 0.022 0.026
1Q2020 2DBP-01 805 N 4TH AVE
1Q2020 Feb 18, 2020 2DBP-02 500 SW 345TH AVE 0.035 0.032 0.021 0.019
1Q2020 Feb 18, 2020 2DBP-04 #2 RESERVOIR 0.053 0.051 0.023 0.019
4Q2019 2DBP-01 805 N 4TH AVE
4Q2019 Nov 05, 2019 2DBP-02 500 SW 345TH AVE 0.038 0.039 0.023 0.021
4Q2019 Nov 05, 2019 2DBP-04 #2 RESERVOIR 0.050 0.059 0.026 0.023
3Q2019 2DBP-01 805 N 4TH AVE
3Q2019 Aug 06, 2019 2DBP-02 500 SW 345TH AVE 0.040 0.034 0.023 0.021
3Q2019 Aug 06, 2019 2DBP-04 #2 RESERVOIR 0.040 0.050 0.025 0.025
2Q2019 2DBP-01 805 N 4TH AVE 0.023 0.016
2Q2019 May 07, 2019 2DBP-02 500 SW 345TH AVE 0.040 0.042 0.025 0.027
2Q2019 May 07, 2019 2DBP-04 #2 RESERVOIR 0.033 0.037 0.027 0.029
1Q2019 2DBP-01 805 N 4TH AVE 0.027 0.019
1Q2019 Feb 14, 2019 2DBP-02 500 SW 345TH AVE 0.041 0.040 0.027 0.025
1Q2019 Feb 05, 2019 2DBP-04 #2 RESERVOIR 0.027 0.028 0.023 0.026
4Q2018 2DBP-01 805 N 4TH AVE 0.025 0.020
4Q2018 Nov 13, 2018 2DBP-02 500 SW 345TH AVE 0.040 0.045 0.028 0.026
4Q2018 Nov 13, 2018 2DBP-04 #2 RESERVOIR 0.024 0.024 0.014 0.014
3Q2018 Aug 21, 2018 2DBP-01 805 N 4TH AVE 0.026 0.024 0.024 0.019
3Q2018 Aug 21, 2018 2DBP-02 500 SW 345TH AVE 0.040 0.034 0.032 0.027
3Q2018 2DBP-04 #2 RESERVOIR
2Q2018 May 01, 2018 2DBP-01 805 N 4TH AVE 0.026 0.028 0.025 0.025
2Q2018 May 01, 2018 2DBP-02 500 SW 345TH AVE 0.040 0.044 0.033 0.035
2Q2018 2DBP-04 #2 RESERVOIR
1Q2018 Feb 06, 2018 2DBP-01 805 N 4TH AVE 0.023 0.024 0.025 0.026
1Q2018 Feb 06, 2018 2DBP-02 500 SW 345TH AVE 0.038 0.038 0.033 0.033
1Q2018 2DBP-04 #2 RESERVOIR
4Q2017 Nov 14, 2017 2DBP-01 805 N 4TH AVE 0.024 0.026 0.025 0.028
4Q2017 Nov 14, 2017 2DBP-02 500 SW 345TH AVE 0.039 0.043 0.032 0.035
4Q2017 2DBP-04 #2 RESERVOIR 0.023 0.023
3Q2017 Aug 01, 2017 2DBP-01 805 N 4TH AVE 0.021 0.020 0.020 0.021
3Q2017 Aug 01, 2017 2DBP-02 500 SW 345TH AVE 0.037 0.033 0.029 0.029
3Q2017 2DBP-04 #2 RESERVOIR 0.035 0.023
2Q2017 May 30, 2017 2DBP-01 805 N 4TH AVE 0.021 0.021 0.020 0.020
2Q2017 May 09, 2017 2DBP-02 500 SW 345TH AVE 0.038 0.039 0.029 0.031
2Q2017 2DBP-04 #2 RESERVOIR 0.032 0.021
1Q2017 2DBP-01 805 N 4TH AVE
1Q2017 Feb 14, 2017 2DBP-02 500 SW 345TH AVE 0.044 0.038 0.033 0.028
1Q2017 Feb 14, 2017 2DBP-04 #2 RESERVOIR 0.035 0.030 0.028 0.022
4Q2016 2DBP-01 805 N 4TH AVE
4Q2016 Nov 01, 2016 2DBP-02 500 SW 345TH AVE 0.043 0.047 0.033 0.033
4Q2016 Nov 01, 2016 2DBP-04 #2 RESERVOIR 0.034 0.041 0.027 0.028
3Q2016 2DBP-01 805 N 4TH AVE
3Q2016 Aug 02, 2016 2DBP-02 500 SW 345TH AVE 0.049 0.040 0.032 0.032
3Q2016 Aug 02, 2016 2DBP-04 #2 RESERVOIR 0.039 0.029 0.029 0.026
2Q2016 2DBP-01 805 N 4TH AVE
2Q2016 May 03, 2016 2DBP-02 500 SW 345TH AVE 0.049 0.055 0.030 0.038
2Q2016 May 03, 2016 2DBP-04 #2 RESERVOIR 0.039 0.043 0.029 0.036
1Q2016 2DBP-01 805 N 4TH AVE
1Q2016 Feb 02, 2016 2DBP-02 500 SW 345TH AVE 0.045 0.043 0.024 0.024
1Q2016 Feb 02, 2016 2DBP-04 #2 RESERVOIR 0.037 0.033 0.024 0.022
4Q2015 2DBP-01 805 N 4TH AVE
4Q2015 Nov 03, 2015 2DBP-02 500 SW 345TH AVE 0.045 0.055 0.022 0.023
4Q2015 Nov 03, 2015 2DBP-04 #2 RESERVOIR 0.038 0.048 0.023 0.027
3Q2015 2DBP-01 805 N 4TH AVE
3Q2015 Aug 04, 2015 2DBP-02 500 SW 345TH AVE 0.037 0.035 0.022 0.020
3Q2015 Aug 04, 2015 2DBP-04 #2 RESERVOIR 0.030 0.028 0.022 0.019
2Q2015 2DBP-01 805 N 4TH AVE
2Q2015 May 12, 2015 2DBP-02 500 SW 345TH AVE 0.037 0.039 0.023 0.025
2Q2015 May 12, 2015 2DBP-04 #2 RESERVOIR 0.030 0.033 0.021 0.025
1Q2015 2DBP-01 805 N 4TH AVE
1Q2015 Feb 03, 2015 2DBP-02 500 SW 345TH AVE 0.036 0.034 0.021 0.021
1Q2015 Feb 03, 2015 2DBP-04 #2 RESERVOIR 0.027 0.026 0.019 0.019
4Q2014 2DBP-01 805 N 4TH AVE
4Q2014 Nov 06, 2014 2DBP-02 500 SW 345TH AVE 0.032 0.040 0.020 0.022
4Q2014 Nov 06, 2014 2DBP-04 #2 RESERVOIR 0.024 0.032 0.017 0.021
3Q2014 2DBP-01 805 N 4TH AVE
3Q2014 Aug 05, 2014 2DBP-02 500 SW 345TH AVE 0.035 0.029 0.021 0.018
3Q2014 Aug 05, 2014 2DBP-04 #2 RESERVOIR 0.024 0.021 0.017 0.013
2Q2014 2DBP-01 805 N 4TH AVE
2Q2014 2DBP-02 500 SW 345TH AVE 0.033 0.021
2Q2014 2DBP-04 #2 RESERVOIR 0.023 0.019
1Q2014 2DBP-01 805 N 4TH AVE
1Q2014 Feb 11, 2014 2DBP-02 500 SW 345TH AVE 0.033 0.029 0.022 0.020
1Q2014 Feb 11, 2014 2DBP-04 #2 RESERVOIR 0.024 0.020 0.020 0.017
4Q2013 2DBP-01 805 N 4TH AVE 0.026 0.030
4Q2013 Nov 12, 2013 2DBP-02 500 SW 345TH AVE 0.037 0.041 0.027 0.025
4Q2013 Nov 12, 2013 2DBP-04 #2 RESERVOIR 0.027 0.029 0.025 0.024
3Q2013 2DBP-01 805 N 4TH AVE 0.028 0.032
3Q2013 Aug 06, 2013 2DBP-02 500 SW 345TH AVE 0.034 0.032 0.027 0.024
3Q2013 Aug 06, 2013 2DBP-04 #2 RESERVOIR 0.028 0.025 0.025 0.023
2Q2013 2DBP-01 805 N 4TH AVE 0.027 0.028
2Q2013 May 02, 2013 2DBP-02 500 SW 345TH AVE 0.035 0.035 0.027 0.029
2Q2013 May 02, 2013 2DBP-04 #2 RESERVOIR 0.031 0.029 0.024 0.026
1Q2013 Feb 19, 2013 2DBP-01 805 N 4TH AVE 0.026 0.027 0.026 0.029
1Q2013 Feb 19, 2013 2DBP-02 500 SW 345TH AVE 0.037 0.035 0.025 0.029
1Q2013 Feb 19, 2013 2DBP-03 1322 S CHERRY 0.023 0.024 0.022 0.024
1Q2013 Feb 19, 2013 2DBP-04 #2 RESERVOIR 0.036 0.032 0.026 0.026
4Q2012 Nov 27, 2012 2DBP-01 805 N 4TH AVE 0.020 0.027 0.019 0.027
4Q2012 Nov 27, 2012 2DBP-02 500 SW 345TH AVE 0.028 0.038 0.017 0.024
4Q2012 Nov 27, 2012 2DBP-03 1322 S CHERRY 0.017 0.024 0.016 0.022
4Q2012 Nov 27, 2012 2DBP-04 #2 RESERVOIR 0.029 0.038 0.018 0.024
3Q2012 Aug 22, 2012 2DBP-01 805 N 4TH AVE 0.012 0.010
3Q2012 Aug 22, 2012 2DBP-02 500 SW 345TH AVE 0.018 0.010
3Q2012 Aug 22, 2012 2DBP-03 1322 S CHERRY 0.011 0.009
3Q2012 Aug 22, 2012 2DBP-04 #2 RESERVOIR 0.020 0.012
2Q2012 May 15, 2012 2DBP-01 805 N 4TH AVE 0.006 0.005
2Q2012 May 15, 2012 2DBP-02 500 SW 345TH AVE 0.011 0.005
2Q2012 May 15, 2012 2DBP-03 1322 S CHERRY 0.006 0.004
2Q2012 May 15, 2012 2DBP-04 #2 RESERVOIR 0.011 0.008



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