OHA Drinking Water Services
OR41
PWS ID: 90595 ---- NESTUCCA VALLEY ELEMENTARY SCHOOL
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 Jul 22, 2025 2DBP-01 KITCHEN TAP 0.006 0 0.009 0
2Q2025 Apr 08, 2025 2DBP-01 KITCHEN TAP 0.006 0.008 0.009 0.012
1Q2025 Jan 14, 2025 2DBP-01 KITCHEN TAP 0.006 0.008 0.009 0.012
4Q2024 Dec 30, 2024 2DBP-01 KITCHEN TAP 0.006 0.012 0.009 0.018
3Q2024 Aug 07, 2024 2DBP-01 KITCHEN TAP 0 0 0 0
2Q2024 May 09, 2024 2DBP-01 KITCHEN TAP 0 0 0 0
1Q2024 Jan 23, 2024 2DBP-01 KITCHEN TAP 0.017 0 0.004 0
4Q2023 Oct 03, 2023 2DBP-01 KITCHEN TAP 0.017 0.022 0.005 0.006
3Q2023 Aug 16, 2023 2DBP-01 KITCHEN TAP 0.036 0.023 0.011 0.007
2Q2023 Apr 12, 2023 2DBP-01 KITCHEN TAP 0.037 0.053 0.013 0.016
1Q2023 Feb 09, 2023 2DBP-01 KITCHEN TAP 0.047 0.021 0.019 0.010
4Q2022 Dec 08, 2022 2DBP-01 KITCHEN TAP 0.076 0.066 0.046 0.024
3Q2022 Aug 10, 2022 2DBP-01 KITCHEN TAP 0.076 0.058 0.053 0.042
2Q2022 Apr 12, 2022 2DBP-01 KITCHEN TAP 0.112 0.110 0.076 0.065
1Q2022 Jan 19, 2022 2DBP-01 KITCHEN TAP 0.058 0.116 0.055 0.10993
4Q2021 2DBP-01 KITCHEN TAP
3Q2021 2DBP-01 KITCHEN TAP
2Q2021 2DBP-01 KITCHEN TAP
1Q2021 2DBP-01 KITCHEN TAP
4Q2020 2DBP-01 KITCHEN TAP
3Q2020 2DBP-01 KITCHEN TAP 0 0
2Q2020 2DBP-01 KITCHEN TAP 0.083 0.059
1Q2020 2DBP-01 KITCHEN TAP 0.0623 0.0443
4Q2019 Dec 18, 2019 2DBP-01 KITCHEN TAP 0.0623 0 0.0443 0



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