OHA Drinking Water Services
OR41
PWS ID: 00544 ---- MOUNT ANGEL, 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
1Q2026 Jan 12, 2026 2DBP-01 980 N MAIN ST 0.005 0.006
1Q2026 Jan 12, 2026 2DBP-02 180 S. SHERIDAN ST 0.004 0.006
4Q2025 Nov 24, 2025 2DBP-01 980 N MAIN ST 0.006 0.004
4Q2025 Nov 24, 2025 2DBP-02 180 S. SHERIDAN ST 0.005 0.003
3Q2025 Aug 04, 2025 2DBP-01 980 N MAIN ST 0.007 0.001
3Q2025 Aug 04, 2025 2DBP-02 180 S. SHERIDAN ST 0.006 0
2Q2025 Apr 14, 2025 2DBP-01 980 N MAIN ST 0.006 0.001
2Q2025 Apr 14, 2025 2DBP-02 180 S. SHERIDAN ST 0.005 0
1Q2025 Feb 24, 2025 2DBP-01 980 N MAIN ST 0.007 0.001
1Q2025 Feb 24, 2025 2DBP-02 180 S. SHERIDAN ST 0.006 0
4Q2024 Nov 19, 2024 2DBP-01 980 N MAIN ST 0.006 0
4Q2024 2DBP-02 180 S. SHERIDAN ST
3Q2024 Aug 27, 2024 2DBP-01 980 N MAIN ST 0.006 0
3Q2024 2DBP-02 180 S. SHERIDAN ST