OHA Drinking Water Services
OR41
PWS ID: 00124 ---- FISHHAWK LAKE RESERVE AND COMMUNITY
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
3Q2025 Sep 10, 2025 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.043 0.049 0.032 0.034
3Q2025 Sep 10, 2025 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.037 0.041 0.027 0.029
2Q2025 Jun 18, 2025 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.038 0.038 0.030 0.029
2Q2025 Jun 18, 2025 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.036 0.034 0.025 0.024
1Q2025 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.035 0.032
1Q2025 Mar 13, 2025 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.037 0.028 0.028 0.021
4Q2024 Dec 18, 2024 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.028 0.035 0.022 0.032
4Q2024 Dec 18, 2024 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.040 0.044 0.028 0.033
3Q2024 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.023 0.017
3Q2024 Sep 18, 2024 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.036 0.043 0.024 0.028
2Q2024 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.023 0.017
2Q2024 Jun 19, 2024 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.032 0.037 0.022 0.026
1Q2024 Mar 22, 2024 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.023 0.023 0.017 0.016
1Q2024 Mar 22, 2024 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.023 0.024 0.014 0.013
4Q2023 Dec 31, 2023 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.025 0.025 0.022 0.022
4Q2023 Dec 31, 2023 2DBP-02 71250 N SHORE DR (OUTDOOR SPIGOT) 0.021 0.021 0.015 0.015
4Q2021 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.034 0.017
3Q2021 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.028 0.014
2Q2021 Jun 23, 2021 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.033 0.033 0.016 0.016
1Q2021 Mar 24, 2021 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.029 0.026 0.017 0.014
4Q2020 Dec 23, 2020 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.029 0.028 0.017 0.016
3Q2020 Sep 16, 2020 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.035 0.036 0.022 0.021
2Q2020 Jun 24, 2020 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.032 0.032 0.022 0.022
1Q2020 Mar 18, 2020 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.030 0.026 0.020 0.017
4Q2019 Dec 11, 2019 2DBP-01 71150 NORTHSHORE WASTEWATER PLANT 0.042 0.042 0.030 0.030