OHA Drinking Water Services
OR41
PWS ID: 95655 ---- BIGGS SERVICE DISTRICT
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
2Q2025 May 13, 2025 2DBP-01 WWTP 0.014 0.004
2Q2025 May 13, 2025 2DBP-02 PILOT/MCDONALDS 0.013 0.003
1Q2025 Mar 28, 2025 2DBP-01 WWTP 0.014 0.004
1Q2025 Jan 08, 2025 2DBP-02 PILOT/MCDONALDS 0.014 0.003
4Q2024 Oct 16, 2024 2DBP-01 WWTP 0.017 0.005
4Q2024 Oct 16, 2024 2DBP-02 PILOT/MCDONALDS 0.016 0.002
3Q2024 Jul 31, 2024 2DBP-01 WWTP 0.021 0.005
3Q2024 Jul 31, 2024 2DBP-02 PILOT/MCDONALDS 0.019 0.004