OHA Drinking Water Services
OR41
PWS ID: 91753 ---- ROCK SPRINGS GUEST RANCH
Arsenic Running Annual Averages

Results shown are only for quarterly or monthly monitoring schedules.
Averages are subject to change as new data is taken into consideration.

Arsenic MCL = 0.010 mg/L. MCL exceedances are indicated with red text.

MP Begin MP End MP Name Location Sample
Point		 Arsenic RAA
(mg/L)
10/01/2025 12/31/2025 4Q2025 EP FOR WELL #2 EP-B0.000