OHA Drinking Water Services
OR41
PWS ID: 00630 ---- ALDER CREEK BARLOW WATER DIST
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
4Q2025 2DBP-01 52650 E SYLVAN DR 0.014 0.013
4Q2025 2DBP-02 19815 E SUMMERTIME DR 0.009 0.023
3Q2025 Sep 23, 2025 2DBP-01 52650 E SYLVAN DR 0.014 0.016 0.013 0.016
3Q2025 Sep 23, 2025 2DBP-02 19815 E SUMMERTIME DR 0.009 0.013 0.023 0.031
2Q2025 Jun 26, 2025 2DBP-01 52650 E SYLVAN DR 0.009 0.010 0.008 0.009
2Q2025 Jun 26, 2025 2DBP-02 19815 E SUMMERTIME DR 0.002 0.002 0.006 0.008
1Q2025 Mar 31, 2025 2DBP-01 52650 E SYLVAN DR 0.010 0.006 0.009 0.003
1Q2025 Mar 31, 2025 2DBP-02 19815 E SUMMERTIME DR 0.010 0.003 0.010 0
4Q2024 2DBP-01 52650 E SYLVAN DR 0.036 0.048
4Q2024 2DBP-02 19815 E SUMMERTIME DR 0.026 0.030
3Q2024 2DBP-01 52650 E SYLVAN DR 0.027 0.034
3Q2024 2DBP-02 19815 E SUMMERTIME DR 0.021 0.022
2Q2024 Jun 25, 2024 2DBP-01 52650 E SYLVAN DR 0.037 0.024 0.040 0.029
2Q2024 Jun 25, 2024 2DBP-02 19815 E SUMMERTIME DR 0.031 0.020 0.036 0.022
1Q2024 Mar 27, 2024 2DBP-01 52650 E SYLVAN DR 0.044 0.048 0.048 0.057
1Q2024 Mar 27, 2024 2DBP-02 19815 E SUMMERTIME DR 0.035 0.035 0.042 0.041
4Q2023 Dec 11, 2023 2DBP-01 52650 E SYLVAN DR 0.038 0.029 0.032 0.024
4Q2023 Dec 11, 2023 2DBP-02 19815 E SUMMERTIME DR 0.036 0.028 0.043 0.031
3Q2023 Sep 28, 2023 2DBP-01 52650 E SYLVAN DR 0.065 0.065 0.056 0.056
3Q2023 Sep 28, 2023 2DBP-02 19815 E SUMMERTIME DR 0.061 0.061 0.077 0.077
2Q2023 2DBP-01 52650 E SYLVAN DR
2Q2023 2DBP-02 19815 E SUMMERTIME DR
1Q2023 2DBP-01 52650 E SYLVAN DR
1Q2023 2DBP-02 19815 E SUMMERTIME DR
4Q2022 2DBP-01 52650 E SYLVAN DR
4Q2022 2DBP-02 19815 E SUMMERTIME DR
3Q2022 2DBP-01 52650 E SYLVAN DR 0.012 0.013
3Q2022 2DBP-02 19815 E SUMMERTIME DR 0.018 0.029
2Q2022 2DBP-01 52650 E SYLVAN DR 0.012 0.013
2Q2022 2DBP-02 19815 E SUMMERTIME DR 0.018 0.029
1Q2022 2DBP-01 52650 E SYLVAN DR 0.017 0.013
1Q2022 2DBP-02 19815 E SUMMERTIME DR 0.018 0.020
4Q2021 Dec 14, 2021 2DBP-01 52650 E SYLVAN DR 0.017 0.015 0.013 0.013
4Q2021 Dec 14, 2021 2DBP-02 19815 E SUMMERTIME DR 0.018 0.018 0.020 0.023
3Q2021 2DBP-01 52650 E SYLVAN DR 0.022
3Q2021 2DBP-02 19815 E SUMMERTIME DR 0.011
2Q2021 Jun 28, 2021 2DBP-01 52650 E SYLVAN DR 0.022 0.022
2Q2021 Jun 28, 2021 2DBP-02 19815 E SUMMERTIME DR 0.011 0.011
1Q2021 2DBP-01 52650 E SYLVAN DR
1Q2021 2DBP-02 19815 E SUMMERTIME DR
4Q2020 2DBP-01 52650 E SYLVAN DR 0.046 0.051
4Q2020 2DBP-02 19815 E SUMMERTIME DR 0.014 0.014
3Q2020 2DBP-01 52650 E SYLVAN DR 0.046 0.051
3Q2020 2DBP-02 19815 E SUMMERTIME DR 0.014 0.014
2Q2020 2DBP-01 52650 E SYLVAN DR 0.046 0.051
2Q2020 2DBP-02 19815 E SUMMERTIME DR 0.014 0.014
1Q2020 Mar 31, 2020 2DBP-01 52650 E SYLVAN DR 0.046 0.046 0.051 0.051
1Q2020 Mar 31, 2020 2DBP-02 19815 E SUMMERTIME DR 0.014 0.014 0.014 0.014