OHA Drinking Water Services
OR41
PWS ID: 91707 ---- PLEASANT VALLEY ELEM SD #55
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
1Q2026 Jan 12, 2026 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2025 Oct 13, 2025 2DBP-01 ROOM #1 SINK 0 0 0 0
3Q2025 Jul 14, 2025 2DBP-01 ROOM #1 SINK 0 0 0 0
2Q2025 Apr 14, 2025 2DBP-01 ROOM #1 SINK 0 0 0 0
1Q2025 Jan 13, 2025 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2024 Oct 14, 2024 2DBP-01 ROOM #1 SINK 0 0 0 0
3Q2024 Jul 02, 2024 2DBP-01 ROOM #1 SINK 0 0 0 0
2Q2024 Apr 08, 2024 2DBP-01 ROOM #1 SINK 0 0 0 0
1Q2024 Jan 08, 2024 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2023 Oct 09, 2023 2DBP-01 ROOM #1 SINK 0 0 0 0
3Q2023 Jul 25, 2023 2DBP-01 ROOM #1 SINK 0 0 0 0
2Q2023 Apr 10, 2023 2DBP-01 ROOM #1 SINK 0 0 0 0
1Q2023 Jan 09, 2023 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2022 Oct 10, 2022 2DBP-01 ROOM #1 SINK 0 0 0 0
3Q2022 Jul 11, 2022 2DBP-01 ROOM #1 SINK 0 0 0 0
2Q2022 Apr 11, 2022 2DBP-01 ROOM #1 SINK 0 0 0 0
1Q2022 Jan 10, 2022 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2021 Oct 11, 2021 2DBP-01 ROOM #1 SINK 0 0 0 0
3Q2021 Jul 12, 2021 2DBP-01 ROOM #1 SINK 0 0 0 0
2Q2021 Apr 02, 2021 2DBP-01 ROOM #1 SINK 0 0 0 0
1Q2021 Jan 19, 2021 2DBP-01 ROOM #1 SINK 0 0 0 0
4Q2020 Nov 17, 2020 2DBP-01 ROOM #1 SINK 0 0 0 0