OHA Drinking Water Services
OR41
PWS ID: 01560 ---- KNOLL TERRACE SUBDIVISION
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
4Q2024 Oct 14, 2024 2DBP-01 138 KIMBERLY WAY 0.026 0.032
4Q2024 Oct 14, 2024 2DBP-02 125 COMFORT COURT 0.030 0.038
3Q2024 Jul 08, 2024 2DBP-01 138 KIMBERLY WAY 0.025 0.031
3Q2024 Jul 08, 2024 2DBP-02 125 COMFORT COURT 0.029 0.034
2Q2024 Apr 15, 2024 2DBP-01 138 KIMBERLY WAY 0.028 0.034
2Q2024 Apr 15, 2024 2DBP-02 125 COMFORT COURT 0.031 0.038
1Q2024 Jan 16, 2024 2DBP-01 138 KIMBERLY WAY 0.031 0.035
1Q2024 Jan 16, 2024 2DBP-02 125 COMFORT COURT 0.034 0.039
4Q2023 Oct 17, 2023 2DBP-01 138 KIMBERLY WAY 0.039 0.046
4Q2023 Oct 17, 2023 2DBP-02 125 COMFORT COURT 0.038 0.045
3Q2023 Aug 23, 2023 2DBP-01 138 KIMBERLY WAY 0.047 0.047
3Q2023 Aug 23, 2023 2DBP-02 125 COMFORT COURT 0.035 0.045