OHA Drinking Water Services
OR41
PWS ID: 00337 ---- ROCK CREEK WATER 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
3Q2017 Sep 18, 2017 2DBP-01 FORD RD & ROCK CR DR 0.044 0.039 0.025 0.024
2Q2017 Jun 14, 2017 2DBP-01 FORD RD & ROCK CR DR 0.046 0.043 0.026 0.026
1Q2017 Mar 14, 2017 2DBP-01 FORD RD & ROCK CR DR 0.051 0.048 0.027 0.029
4Q2016 Dec 13, 2016 2DBP-01 FORD RD & ROCK CR DR 0.060 0.060 0.023 0.023