OHA Drinking Water Services
OR41
PWS ID: 91884 ---- WALTERVILLE ELEM SD 19
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)
01/01/2026 03/31/2026 1Q2026 EP FOR WELL EP-A0.008
10/01/2025 12/31/2025 4Q2025 EP FOR WELL EP-A0.009
07/01/2025 09/30/2025 3Q2025 EP FOR WELL EP-A0.005
04/01/2025 06/30/2025 2Q2025 EP FOR WELL EP-A0.008
01/01/2025 03/31/2025 1Q2025 EP FOR WELL EP-A0.005